[gnome-calculator] Set the buttons table as toplevel in the .ui files

From: Robert Ancell <rancell src gnome org>
To: commits-list gnome org
Cc:
Subject: [gnome-calculator] Set the buttons table as toplevel in the .ui files
Date: Sun, 14 Apr 2013 21:25:14 +0000 (UTC)
commit fe54817d981a05e16d770ae107427cc0d67626d4
Author: Paolo Borelli <pborelli gnome org>
Date:   Sun Apr 14 09:36:14 2013 +0200

    Set the buttons table as toplevel in the .ui files
    
    Newer versions of glade can handle any container as toplevels, so we can
    remove the unused window object. This in turn simplifies the widget
    code.

 data/buttons-advanced.ui    | 1683 ++++++++--------
 data/buttons-basic.ui       |  809 ++++----
 data/buttons-financial.ui   | 1355 +++++++------
 data/buttons-programming.ui | 4603 +++++++++++++++++++++----------------------
 src/math-buttons.vala       |   13 +-
 5 files changed, 4211 insertions(+), 4252 deletions(-)
---
diff --git a/data/buttons-advanced.ui b/data/buttons-advanced.ui
index c37d87b..109e0fb 100644
--- a/data/buttons-advanced.ui
+++ b/data/buttons-advanced.ui
@@ -1,999 +1,994 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <requires lib="gtk+" version="2.16"/>
   <!-- interface-naming-policy toplevel-contextual -->
-  <object class="GtkWindow" id="window1">
+  <object class="GtkTable" id="button_panel">
+    <property name="visible">True</property>
+    <property name="n_rows">5</property>
+    <property name="n_columns">10</property>
+    <property name="homogeneous">True</property>
     <child>
-      <object class="GtkTable" id="button_panel">
+      <object class="GtkButton" id="calc_inverse_button">
         <property name="visible">True</property>
-        <property name="n_rows">5</property>
-        <property name="n_columns">10</property>
-        <property name="homogeneous">True</property>
-        <child>
-          <object class="GtkButton" id="calc_inverse_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_inverse_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the inverse button">Inverse</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label20">
-                <property name="visible">True</property>
-                <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;</property>
-                <property name="use_markup">True</property>
-                <property name="justify">center</property>
-              </object>
-            </child>
-          </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_factor_button">
-            <property name="label">a×b</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_factor_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the factorize button">Factorize</property>
-              </object>
-            </child>
-          </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_factorial_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_factorial_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the factorial button">Factorial</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label14">
-                <property name="visible">True</property>
-                <property name="label">&lt;i&gt;x&lt;/i&gt;!</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
-          </object>
-          <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_imaginary_portion_button">
-            <property name="label">Im</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_imaginary_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkLabel" id="imaginary_label">
-                <property name="visible">True</property>
-                <property name="label">&lt;i&gt;i&lt;/i&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_4_button">
-            <property name="label">4</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_7_button">
-            <property name="label">7</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_8_button">
-            <property name="label">8</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_9_button">
-            <property name="label">9</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_5_button">
-            <property name="label">5</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_6_button">
-            <property name="label">6</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_divide_button">
-            <property name="label">÷</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_1_button">
-            <property name="label">1</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_2_button">
-            <property name="label">2</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_0_button">
-            <property name="label">0</property>
-            <property name="width_request">50</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_numeric_point_button">
-            <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_3_button">
-            <property name="label">3</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_multiply_button">
-            <property name="label">×</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_inverse_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
inverse button">Inverse</property>
           </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_subtract_button">
-            <property name="label">−</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_add_button">
-            <property name="label">+</property>
+          <object class="GtkLabel" id="label20">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;</property>
+            <property name="use_markup">True</property>
+            <property name="justify">center</property>
           </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
-        <child>
-          <object class="GtkButton" id="calc_result_button">
-            <property name="label" translatable="yes" comments="Label on the solve button (clicking this 
solves the displayed calculation)">=</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_factor_button">
+        <property name="label">a×b</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_factor_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
factorize button">Factorize</property>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
-        <child>
-          <object class="GtkButton" id="calc_clear_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkImage" id="image1">
-                <property name="visible">True</property>
-                <property name="icon-name">edit-clear-symbolic</property>
-              </object>
-            </child>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_factorial_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_factorial_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
factorial button">Factorial</property>
           </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkToggleButton" id="calc_subscript_button">
+          <object class="GtkLabel" id="label14">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_subscript_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the subscript mode button">Subscript</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label4">
-                <property name="visible">True</property>
-                <property name="label">↓n</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+            <property name="label">&lt;i&gt;x&lt;/i&gt;!</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_imaginary_portion_button">
+        <property name="label">Im</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_imaginary_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkToggleButton" id="calc_superscript_button">
+          <object class="GtkLabel" id="imaginary_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_superscript_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the superscript mode button">Superscript</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label3">
-                <property name="visible">True</property>
-                <property name="label">↑n</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+            <property name="label">&lt;i&gt;i&lt;/i&gt;</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_4_button">
+        <property name="label">4</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_7_button">
+        <property name="label">7</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_8_button">
+        <property name="label">8</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_9_button">
+        <property name="label">9</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_5_button">
+        <property name="label">5</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_6_button">
+        <property name="label">6</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_divide_button">
+        <property name="label">÷</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_1_button">
+        <property name="label">1</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_2_button">
+        <property name="label">2</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_0_button">
+        <property name="label">0</property>
+        <property name="width_request">50</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_numeric_point_button">
+        <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_3_button">
+        <property name="label">3</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_multiply_button">
+        <property name="label">×</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_subtract_button">
+        <property name="label">−</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_add_button">
+        <property name="label">+</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_result_button">
+        <property name="label" translatable="yes" comments="Label on the solve button (clicking this solves 
the displayed calculation)">=</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_clear_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_exponential_button">
+          <object class="GtkImage" id="image1">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_exponential_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the scientific exponent button">Scientific Exponent</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label2">
-                <property name="visible">True</property>
-                <property name="label">×10&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+            <property name="icon-name">edit-clear-symbolic</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkToggleButton" id="calc_subscript_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_subscript_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
subscript mode button">Subscript</property>
           </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_modulus_divide_button">
-            <property name="label">mod</property>
+          <object class="GtkLabel" id="label4">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">↓n</property>
+            <property name="use_markup">True</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkToggleButton" id="calc_superscript_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_superscript_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
superscript mode button">Superscript</property>
           </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_start_group_button">
-            <property name="label">(</property>
+          <object class="GtkLabel" id="label3">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">↑n</property>
+            <property name="use_markup">True</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_exponential_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_exponential_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
scientific exponent button">Scientific Exponent</property>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_end_group_button">
-            <property name="label">)</property>
+          <object class="GtkLabel" id="label2">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">×10&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
+            <property name="use_markup">True</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_modulus_divide_button">
+        <property name="label">mod</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_start_group_button">
+        <property name="label">(</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_end_group_button">
+        <property name="label">)</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_memory_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_memory_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
memory button">Memory</property>
           </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_memory_button">
+          <object class="GtkHBox" id="hbox20">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_memory_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the memory button">Memory</property>
+            <child>
+              <object class="GtkLabel" id="label23">
+                <property name="visible">True</property>
+                <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
+                <attributes>
+                  <attribute name="style" value="italic"/>
+                </attributes>
               </object>
+              <packing>
+                <property name="position">0</property>
+              </packing>
             </child>
             <child>
-              <object class="GtkHBox" id="hbox20">
+              <object class="GtkArrow" id="arrow14">
                 <property name="visible">True</property>
-                <child>
-                  <object class="GtkLabel" id="label23">
-                    <property name="visible">True</property>
-                    <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
-                    <attributes>
-                      <attribute name="style" value="italic"/>
-                    </attributes>
-                  </object>
-                  <packing>
-                    <property name="position">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkArrow" id="arrow14">
-                    <property name="visible">True</property>
-                    <property name="arrow_type">down</property>
-                  </object>
-                  <packing>
-                    <property name="expand">False</property>
-                    <property name="position">1</property>
-                  </packing>
-                </child>
+                <property name="arrow_type">down</property>
               </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="position">1</property>
+              </packing>
             </child>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
+        </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_abs_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_abs_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
absolute value button">Absolute Value</property>
+          </object>
         </child>
         <child>
-          <object class="GtkButton" id="calc_abs_button">
+          <object class="GtkLabel" id="label1">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_abs_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the absolute value button">Absolute Value</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="label1">
-                <property name="visible">True</property>
-                <property name="label">|&lt;i&gt;x&lt;/i&gt;|</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+            <property name="label">|&lt;i&gt;x&lt;/i&gt;|</property>
+            <property name="use_markup">True</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_real_portion_button">
+        <property name="label">Re</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_conjugate_button">
+        <property name="label">conj</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_arg_button">
+        <property name="label">Arg</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_natural_logarithm_button">
+        <property name="label">ln</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_logarithm_button">
+        <property name="label">log</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_x_pow_y_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
exponentiation (x to the power of y) button">Exponent</property>
           </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_real_portion_button">
-            <property name="label">Re</property>
+          <object class="GtkLabel" id="x_pow_y_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_root_button">
+        <property name="label">√</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_undo_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_conjugate_button">
-            <property name="label">conj</property>
+          <object class="GtkImage" id="image2">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="icon-name">edit-undo-symbolic</property>
           </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_pi_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_arg_button">
-            <property name="label">Arg</property>
+          <object class="GtkLabel" id="pi_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">π</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_eulers_number_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_natural_logarithm_button">
-            <property name="label">ln</property>
+          <object class="GtkLabel" id="eulers_number_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="label">&lt;i&gt;e&lt;/i&gt;</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkTable" id="table1">
+        <property name="visible">True</property>
+        <property name="n_rows">2</property>
+        <property name="n_columns">3</property>
+        <property name="homogeneous">True</property>
         <child>
-          <object class="GtkButton" id="calc_logarithm_button">
-            <property name="label">log</property>
+          <object class="GtkButton" id="calc_cosine_button">
+            <property name="label">cos</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
             <property name="focus_on_click">False</property>
           </object>
           <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_x_pow_y_button">
+          <object class="GtkButton" id="calc_sine_button">
+            <property name="label">sin</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
             <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the exponentiation (x to the power of y) button">Exponent</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="x_pow_y_label">
-                <property name="visible">True</property>
-                <property 
name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
           </object>
           <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_root_button">
-            <property name="label">√</property>
+          <object class="GtkButton" id="calc_tangent_button">
+            <property name="label">tan</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
             <property name="focus_on_click">False</property>
           </object>
           <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_undo_button">
+          <object class="GtkButton" id="calc_hyperbolic_cosine_button">
+            <property name="label">cosh</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
             <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkImage" id="image2">
-                <property name="visible">True</property>
-                <property name="icon-name">edit-undo-symbolic</property>
-              </object>
-            </child>
           </object>
           <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_pi_button">
+          <object class="GtkButton" id="calc_hyperbolic_sine_button">
+            <property name="label">sinh</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
             <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkLabel" id="pi_label">
-                <property name="visible">True</property>
-                <property name="label">π</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
           </object>
           <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_eulers_number_button">
+          <object class="GtkButton" id="calc_hyperbolic_tangent_button">
+            <property name="label">tanh</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
             <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkLabel" id="eulers_number_label">
-                <property name="visible">True</property>
-                <property name="label">&lt;i&gt;e&lt;/i&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
           </object>
           <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
             <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
             <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">10</property>
+        <property name="bottom_attach">2</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_function_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_function_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
store value button">Store</property>
+          </object>
+        </child>
         <child>
-          <object class="GtkTable" id="table1">
+          <object class="GtkHBox" id="hbox2">
             <property name="visible">True</property>
-            <property name="n_rows">2</property>
-            <property name="n_columns">3</property>
-            <property name="homogeneous">True</property>
-            <child>
-              <object class="GtkButton" id="calc_cosine_button">
-                <property name="label">cos</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
-            </child>
-            <child>
-              <object class="GtkButton" id="calc_sine_button">
-                <property name="label">sin</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
-            </child>
             <child>
-              <object class="GtkButton" id="calc_tangent_button">
-                <property name="label">tan</property>
+              <object class="GtkLabel" id="label5">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="label">f(x)</property>
               </object>
               <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="position">0</property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_hyperbolic_cosine_button">
-                <property name="label">cosh</property>
+              <object class="GtkArrow" id="arrow1">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="arrow_type">down</property>
               </object>
               <packing>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="expand">False</property>
+                <property name="position">1</property>
               </packing>
             </child>
-            <child>
-              <object class="GtkButton" id="calc_hyperbolic_sine_button">
-                <property name="label">sinh</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
-            </child>
-            <child>
-              <object class="GtkButton" id="calc_hyperbolic_tangent_button">
-                <property name="label">tanh</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
-            </child>
-          </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">10</property>
-            <property name="bottom_attach">2</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_function_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_function_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the store value button">Store</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkHBox" id="hbox2">
-                <property name="visible">True</property>
-                <child>
-                  <object class="GtkLabel" id="label5">
-                    <property name="visible">True</property>
-                    <property name="label">f(x)</property>
-                  </object>
-                  <packing>
-                    <property name="position">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkArrow" id="arrow1">
-                    <property name="visible">True</property>
-                    <property name="arrow_type">down</property>
-                  </object>
-                  <packing>
-                    <property name="expand">False</property>
-                    <property name="position">1</property>
-                  </packing>
-                </child>
-              </object>
-            </child>
           </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="top_attach">4</property>
-            <property name="bottom_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
       </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="top_attach">4</property>
+        <property name="bottom_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
     </child>
   </object>
 </interface>
diff --git a/data/buttons-basic.ui b/data/buttons-basic.ui
index 4515b7c..c8a1867 100644
--- a/data/buttons-basic.ui
+++ b/data/buttons-basic.ui
@@ -1,430 +1,425 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <requires lib="gtk+" version="2.16"/>
   <!-- interface-naming-policy toplevel-contextual -->
-  <object class="GtkWindow" id="window1">
+  <object class="GtkTable" id="button_panel">
+    <property name="visible">True</property>
+    <property name="n_rows">4</property>
+    <property name="n_columns">6</property>
+    <property name="homogeneous">True</property>
     <child>
-      <object class="GtkTable" id="button_panel">
+      <object class="GtkButton" id="calc_4_button">
+        <property name="label">4</property>
         <property name="visible">True</property>
-        <property name="n_rows">4</property>
-        <property name="n_columns">6</property>
-        <property name="homogeneous">True</property>
-        <child>
-          <object class="GtkButton" id="calc_4_button">
-            <property name="label">4</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_7_button">
-            <property name="label">7</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_8_button">
-            <property name="label">8</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_9_button">
-            <property name="label">9</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_5_button">
-            <property name="label">5</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_6_button">
-            <property name="label">6</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_divide_button">
-            <property name="label">÷</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_1_button">
-            <property name="label">1</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_2_button">
-            <property name="label">2</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_0_button">
-            <property name="label">0</property>
-            <property name="width_request">50</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_numeric_point_button">
-            <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_percentage_button">
-            <property name="label">%</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_3_button">
-            <property name="label">3</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_multiply_button">
-            <property name="label">×</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_subtract_button">
-            <property name="label">−</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_add_button">
-            <property name="label">+</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_result_button">
-            <property name="label" translatable="yes" comments="Label on the solve button (clicking this 
solves the displayed calculation)">=</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_start_group_button">
-            <property name="label">(</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_end_group_button">
-            <property name="label">)</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_7_button">
+        <property name="label">7</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_8_button">
+        <property name="label">8</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_9_button">
+        <property name="label">9</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_5_button">
+        <property name="label">5</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_6_button">
+        <property name="label">6</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_divide_button">
+        <property name="label">÷</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_1_button">
+        <property name="label">1</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_2_button">
+        <property name="label">2</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_0_button">
+        <property name="label">0</property>
+        <property name="width_request">50</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_numeric_point_button">
+        <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_percentage_button">
+        <property name="label">%</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_3_button">
+        <property name="label">3</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_multiply_button">
+        <property name="label">×</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_subtract_button">
+        <property name="label">−</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_add_button">
+        <property name="label">+</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_result_button">
+        <property name="label" translatable="yes" comments="Label on the solve button (clicking this solves 
the displayed calculation)">=</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_start_group_button">
+        <property name="label">(</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_end_group_button">
+        <property name="label">)</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_clear_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_clear_button">
+          <object class="GtkImage" id="image2">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkImage" id="image2">
-                <property name="visible">True</property>
-                <property name="icon-name">edit-clear-symbolic</property>
-              </object>
-            </child>
+            <property name="icon-name">edit-clear-symbolic</property>
           </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
-        <child>
-          <object class="GtkButton" id="calc_square_root_button">
-            <property name="label">√</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_square_root_button">
+        <property name="label">√</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_x_squared_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_x_squared_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
exponentiation (x to the power of y) button">Exponent</property>
           </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_x_squared_button">
+          <object class="GtkLabel" id="x_squared_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_x_squared_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the exponentiation (x to the power of y) button">Exponent</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="x_squared_label">
-                <property name="visible">True</property>
-                <property 
name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;2&lt;/i&gt;&lt;/sup&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+            <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;2&lt;/i&gt;&lt;/sup&gt;</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_undo_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_undo_button">
+          <object class="GtkImage" id="image1">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkImage" id="image1">
-                <property name="visible">True</property>
-                <property name="icon-name">edit-undo-symbolic</property>
-              </object>
-            </child>
+            <property name="icon-name">edit-undo-symbolic</property>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
       </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
     </child>
   </object>
 </interface>
diff --git a/data/buttons-financial.ui b/data/buttons-financial.ui
index 141f563..3ab682a 100644
--- a/data/buttons-financial.ui
+++ b/data/buttons-financial.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <requires lib="gtk+" version="2.16"/>
   <!-- interface-naming-policy toplevel-contextual -->
   <object class="GtkDialog" id="ctrm_dialog">
     <property name="can_focus">False</property>
@@ -1847,722 +1846,708 @@
       <action-widget response="-5">button18</action-widget>
     </action-widgets>
   </object>
-  <object class="GtkWindow" id="window1">
+  <object class="GtkTable" id="button_panel">
+    <property name="visible">True</property>
     <property name="can_focus">False</property>
+    <property name="n_rows">4</property>
+    <property name="n_columns">10</property>
+    <property name="homogeneous">True</property>
     <child>
-      <object class="GtkTable" id="button_panel">
+      <object class="GtkButton" id="calc_memory_button">
         <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="n_rows">4</property>
-        <property name="n_columns">10</property>
-        <property name="homogeneous">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_memory_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
memory value button">Memory</property>
+          </object>
+        </child>
         <child>
-          <object class="GtkButton" id="calc_memory_button">
+          <object class="GtkHBox" id="hbox20">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_memory_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the memory value button">Memory</property>
-              </object>
-            </child>
+            <property name="can_focus">False</property>
+            <property name="spacing">3</property>
             <child>
-              <object class="GtkHBox" id="hbox20">
+              <object class="GtkLabel" id="label23">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="spacing">3</property>
-                <child>
-                  <object class="GtkLabel" id="label23">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
-                    <attributes>
-                      <attribute name="style" value="italic"/>
-                    </attributes>
-                  </object>
-                  <packing>
-                    <property name="expand">True</property>
-                    <property name="fill">True</property>
-                    <property name="position">0</property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkArrow" id="arrow14">
-                    <property name="visible">True</property>
-                    <property name="can_focus">False</property>
-                    <property name="arrow_type">down</property>
-                  </object>
-                  <packing>
-                    <property name="expand">False</property>
-                    <property name="fill">True</property>
-                    <property name="position">1</property>
-                  </packing>
-                </child>
+                <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
+                <attributes>
+                  <attribute name="style" value="italic"/>
+                </attributes>
               </object>
+              <packing>
+                <property name="expand">True</property>
+                <property name="fill">True</property>
+                <property name="position">0</property>
+              </packing>
             </child>
-          </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_logarithm_button">
-            <property name="label">log</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_4_button">
-            <property name="label">4</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_7_button">
-            <property name="label">7</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_8_button">
-            <property name="label">8</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_9_button">
-            <property name="label">9</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_5_button">
-            <property name="label">5</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_6_button">
-            <property name="label">6</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_divide_button">
-            <property name="label">÷</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_1_button">
-            <property name="label">1</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_2_button">
-            <property name="label">2</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_0_button">
-            <property name="label">0</property>
-            <property name="width_request">50</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_numeric_point_button">
-            <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">1</property>
-            <property name="right_attach">2</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_percentage_button">
-            <property name="label">%</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_3_button">
-            <property name="label">3</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">2</property>
-            <property name="right_attach">3</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_multiply_button">
-            <property name="label">×</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_subtract_button">
-            <property name="label">−</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_add_button">
-            <property name="label">+</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">3</property>
-            <property name="right_attach">4</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_result_button">
-            <property name="label" translatable="yes" comments="Label on the solve button (clicking this 
solves the displayed calculation)">=</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_start_group_button">
-            <property name="label">(</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_end_group_button">
-            <property name="label">)</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_clear_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
             <child>
-              <object class="GtkImage" id="image2">
+              <object class="GtkArrow" id="arrow14">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="icon-name">edit-clear-symbolic</property>
+                <property name="arrow_type">down</property>
               </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">1</property>
+              </packing>
             </child>
           </object>
-          <packing>
-            <property name="left_attach">5</property>
-            <property name="right_attach">6</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_compounding_term_button">
-            <property name="label" translatable="yes" comments="Calculates the number of compounding periods 
necessary to increase an investment of present value pv to a future value of fv, at a fixed interest rate of 
int per compounding period. See also: http://en.wikipedia.org/wiki/Compound_interest";>Ctrm</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_double_declining_depreciation_button">
-            <property name="label" translatable="yes" comments="Calculates the depreciation allowance on an 
asset for a specified period of time, using the double-declining balance method. See also: 
http://en.wikipedia.org/wiki/Depreciation";>Ddb</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_future_value_button">
-            <property name="label" translatable="yes" comments="Calculates the future value of an investment 
based on a series of equal payments, each of amount pmt, at a periodic interest rate of int, over the number 
of payment periods in the term. See also: http://en.wikipedia.org/wiki/Future_value";>Fv</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_term_button">
-            <property name="label" translatable="yes" comments="Calculates the number of payment periods 
that are necessary during the term of an ordinary annuity, to accumulate a future value of fv, at a periodic 
interest rate of int. Each payment is equal to amount pmt. See also: 
http://en.wikipedia.org/wiki/Annuity_(finance_theory)">Term</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">3</property>
-            <property name="bottom_attach">4</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_sum_of_the_years_digits_depreciation_button">
-            <property name="label" translatable="yes" comments="Calculates the depreciation allowance on an 
asset for a specified period of time, using the Sum-Of-The-Years'-Digits method. This method of depreciation 
accelerates the rate of depreciation, so that more depreciation expense occurs in earlier periods than in 
later ones. The depreciable cost is cost - salvage. The useful life is the number of periods, typically 
years, over which an asset is depreciated. See also: http://en.wikipedia.org/wiki/Depreciation";>Syd</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_straight_line_depreciation_button">
-            <property name="label" translatable="yes" comments="Calculates the straight-line depreciation of 
an asset for one period. The depreciable cost is cost - salvage. The straight-line method of depreciation 
divides the depreciable cost evenly over the useful life of an asset. The useful life is the number of 
periods, typically years, over which an asset is depreciated. See also: 
http://en.wikipedia.org/wiki/Depreciation";>Sln</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_periodic_interest_rate_button">
-            <property name="label" translatable="yes" comments="Calculates the periodic interest necessary 
to increase an investment of present value pv to a future value of fv, over the number of compounding periods 
in term. See also: http://en.wikipedia.org/wiki/Interest                                      
">Rate</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="top_attach">2</property>
-            <property name="bottom_attach">3</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_present_value_button">
-            <property name="label" translatable="yes" comments="Calculates the present value of an 
investment based on a series of equal payments, each of amount pmt, discounted at a periodic interest rate of 
int, over the number of payment periods in the term. See also: 
http://en.wikipedia.org/wiki/Present_value";>Pv</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">9</property>
-            <property name="right_attach">10</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="calc_finc_periodic_payment_button">
-            <property name="label" translatable="yes" comments="Calculates the amount of the periodic 
payment of a loan, where payments are made at the end of each payment period. See also: 
http://en.wikipedia.org/wiki/Amortization_schedule";>Pmt</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-          </object>
-          <packing>
-            <property name="left_attach">8</property>
-            <property name="right_attach">9</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_logarithm_button">
+        <property name="label">log</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_4_button">
+        <property name="label">4</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_7_button">
+        <property name="label">7</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_8_button">
+        <property name="label">8</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_9_button">
+        <property name="label">9</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_5_button">
+        <property name="label">5</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_6_button">
+        <property name="label">6</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_divide_button">
+        <property name="label">÷</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_1_button">
+        <property name="label">1</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_2_button">
+        <property name="label">2</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_0_button">
+        <property name="label">0</property>
+        <property name="width_request">50</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_numeric_point_button">
+        <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">1</property>
+        <property name="right_attach">2</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_percentage_button">
+        <property name="label">%</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_3_button">
+        <property name="label">3</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">2</property>
+        <property name="right_attach">3</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_multiply_button">
+        <property name="label">×</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_subtract_button">
+        <property name="label">−</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_add_button">
+        <property name="label">+</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">3</property>
+        <property name="right_attach">4</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_result_button">
+        <property name="label" translatable="yes" comments="Label on the solve button (clicking this solves 
the displayed calculation)">=</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_start_group_button">
+        <property name="label">(</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_end_group_button">
+        <property name="label">)</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_clear_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_finc_gross_profit_margin_button">
-            <property name="label" translatable="yes" comments="Calculates the resale price of a product, 
based on the product cost and the wanted gross profit margin. See also: 
http://en.wikipedia.org/wiki/Gross_profit_margin";>Gpm</property>
+          <object class="GtkImage" id="image2">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="can_focus">False</property>
+            <property name="icon-name">edit-clear-symbolic</property>
           </object>
-          <packing>
-            <property name="left_attach">7</property>
-            <property name="right_attach">8</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
+      </object>
+      <packing>
+        <property name="left_attach">5</property>
+        <property name="right_attach">6</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_compounding_term_button">
+        <property name="label" translatable="yes" comments="Calculates the number of compounding periods 
necessary to increase an investment of present value pv to a future value of fv, at a fixed interest rate of 
int per compounding period. See also: http://en.wikipedia.org/wiki/Compound_interest";>Ctrm</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_double_declining_depreciation_button">
+        <property name="label" translatable="yes" comments="Calculates the depreciation allowance on an 
asset for a specified period of time, using the double-declining balance method. See also: 
http://en.wikipedia.org/wiki/Depreciation";>Ddb</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_future_value_button">
+        <property name="label" translatable="yes" comments="Calculates the future value of an investment 
based on a series of equal payments, each of amount pmt, at a periodic interest rate of int, over the number 
of payment periods in the term. See also: http://en.wikipedia.org/wiki/Future_value";>Fv</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_term_button">
+        <property name="label" translatable="yes" comments="Calculates the number of payment periods that 
are necessary during the term of an ordinary annuity, to accumulate a future value of fv, at a periodic 
interest rate of int. Each payment is equal to amount pmt. See also: 
http://en.wikipedia.org/wiki/Annuity_(finance_theory)">Term</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">3</property>
+        <property name="bottom_attach">4</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_sum_of_the_years_digits_depreciation_button">
+        <property name="label" translatable="yes" comments="Calculates the depreciation allowance on an 
asset for a specified period of time, using the Sum-Of-The-Years'-Digits method. This method of depreciation 
accelerates the rate of depreciation, so that more depreciation expense occurs in earlier periods than in 
later ones. The depreciable cost is cost - salvage. The useful life is the number of periods, typically 
years, over which an asset is depreciated. See also: http://en.wikipedia.org/wiki/Depreciation";>Syd</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_straight_line_depreciation_button">
+        <property name="label" translatable="yes" comments="Calculates the straight-line depreciation of an 
asset for one period. The depreciable cost is cost - salvage. The straight-line method of depreciation 
divides the depreciable cost evenly over the useful life of an asset. The useful life is the number of 
periods, typically years, over which an asset is depreciated. See also: 
http://en.wikipedia.org/wiki/Depreciation";>Sln</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_periodic_interest_rate_button">
+        <property name="label" translatable="yes" comments="Calculates the periodic interest necessary to 
increase an investment of present value pv to a future value of fv, over the number of compounding periods in 
term. See also: http://en.wikipedia.org/wiki/Interest                                      ">Rate</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="top_attach">2</property>
+        <property name="bottom_attach">3</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_present_value_button">
+        <property name="label" translatable="yes" comments="Calculates the present value of an investment 
based on a series of equal payments, each of amount pmt, discounted at a periodic interest rate of int, over 
the number of payment periods in the term. See also: http://en.wikipedia.org/wiki/Present_value";>Pv</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">9</property>
+        <property name="right_attach">10</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_periodic_payment_button">
+        <property name="label" translatable="yes" comments="Calculates the amount of the periodic payment of 
a loan, where payments are made at the end of each payment period. See also: 
http://en.wikipedia.org/wiki/Amortization_schedule";>Pmt</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">8</property>
+        <property name="right_attach">9</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_finc_gross_profit_margin_button">
+        <property name="label" translatable="yes" comments="Calculates the resale price of a product, based 
on the product cost and the wanted gross profit margin. See also: 
http://en.wikipedia.org/wiki/Gross_profit_margin";>Gpm</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">7</property>
+        <property name="right_attach">8</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_undo_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
         <child>
-          <object class="GtkButton" id="calc_undo_button">
+          <object class="GtkImage" id="image1">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
-            <child>
-              <object class="GtkImage" id="image1">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property name="icon-name">edit-undo-symbolic</property>
-              </object>
-            </child>
+            <property name="can_focus">False</property>
+            <property name="icon-name">edit-undo-symbolic</property>
           </object>
-          <packing>
-            <property name="left_attach">4</property>
-            <property name="right_attach">5</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
-        <child>
-          <object class="GtkButton" id="calc_x_pow_y_button">
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="focus_on_click">False</property>
-            <child internal-child="accessible">
-              <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
-                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the exponentiation (x to the power of y) button">Exponent</property>
-              </object>
-            </child>
-            <child>
-              <object class="GtkLabel" id="x_pow_y_label">
-                <property name="visible">True</property>
-                <property name="can_focus">False</property>
-                <property 
name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
-                <property name="use_markup">True</property>
-              </object>
-            </child>
+      </object>
+      <packing>
+        <property name="left_attach">4</property>
+        <property name="right_attach">5</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_x_pow_y_button">
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="focus_on_click">False</property>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
+            <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for the 
exponentiation (x to the power of y) button">Exponent</property>
           </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
         </child>
         <child>
-          <object class="GtkButton" id="calc_root_button">
-            <property name="label">√</property>
+          <object class="GtkLabel" id="x_pow_y_label">
             <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="use_action_appearance">False</property>
-            <property name="use_underline">True</property>
-            <property name="focus_on_click">False</property>
+            <property name="can_focus">False</property>
+            <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
+            <property name="use_markup">True</property>
           </object>
-          <packing>
-            <property name="left_attach">6</property>
-            <property name="right_attach">7</property>
-            <property name="top_attach">1</property>
-            <property name="bottom_attach">2</property>
-            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-          </packing>
-        </child>
-        <child>
-          <placeholder/>
-        </child>
-        <child>
-          <placeholder/>
-        </child>
-        <child>
-          <placeholder/>
         </child>
       </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkButton" id="calc_root_button">
+        <property name="label">√</property>
+        <property name="visible">True</property>
+        <property name="can_focus">True</property>
+        <property name="receives_default">True</property>
+        <property name="use_action_appearance">False</property>
+        <property name="use_underline">True</property>
+        <property name="focus_on_click">False</property>
+      </object>
+      <packing>
+        <property name="left_attach">6</property>
+        <property name="right_attach">7</property>
+        <property name="top_attach">1</property>
+        <property name="bottom_attach">2</property>
+        <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+        <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+      </packing>
     </child>
   </object>
 </interface>
diff --git a/data/buttons-programming.ui b/data/buttons-programming.ui
index 4c0fc8e..1a79a76 100644
--- a/data/buttons-programming.ui
+++ b/data/buttons-programming.ui
@@ -1,36 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <requires lib="gtk+" version="2.16"/>
   <!-- interface-naming-policy toplevel-contextual -->
-  <object class="GtkWindow" id="window1">
+  <object class="GtkVBox" id="button_panel">
+    <property name="visible">True</property>
+    <property name="spacing">6</property>
     <child>
-      <object class="GtkVBox" id="button_panel">
+      <object class="GtkHBox" id="hbox1">
         <property name="visible">True</property>
         <property name="spacing">6</property>
         <child>
-          <object class="GtkHBox" id="hbox1">
+          <object class="GtkComboBox" id="base_combo">
             <property name="visible">True</property>
-            <property name="spacing">6</property>
-            <child>
-              <object class="GtkComboBox" id="base_combo">
-                <property name="visible">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="expand">False</property>
-                <property name="position">0</property>
-              </packing>
-            </child>
-            <child>
-              <object class="GtkLabel" id="base_label">
-                <property name="visible">True</property>
-                <property name="xalign">1</property>
-                <property name="label" comments="Example content">FF₁₆ 256₁₀</property>
-              </object>
-              <packing>
-                <property name="position">1</property>
-              </packing>
-            </child>
+            <property name="focus_on_click">False</property>
           </object>
           <packing>
             <property name="expand">False</property>
@@ -38,2770 +19,2784 @@
           </packing>
         </child>
         <child>
-          <object class="GtkAlignment" id="bit_panel">
+          <object class="GtkLabel" id="base_label">
+            <property name="visible">True</property>
+            <property name="xalign">1</property>
+            <property name="label" comments="Example content">FF₁₆ 256₁₀</property>
+          </object>
+          <packing>
+            <property name="position">1</property>
+          </packing>
+        </child>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="position">0</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkAlignment" id="bit_panel">
+        <property name="visible">True</property>
+        <property name="xscale">0</property>
+        <property name="yscale">0</property>
+        <child>
+          <object class="GtkTable" id="bit_table">
             <property name="visible">True</property>
-            <property name="xscale">0</property>
-            <property name="yscale">0</property>
+            <property name="n_rows">4</property>
+            <property name="n_columns">39</property>
             <child>
-              <object class="GtkTable" id="bit_table">
+              <object class="GtkEventBox" id="bit_eventbox_1">
                 <property name="visible">True</property>
-                <property name="n_rows">4</property>
-                <property name="n_columns">39</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_1">
+                  <object class="GtkLabel" id="bit_label_1">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_1">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">1</property>
-                    <property name="right_attach">2</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">1</property>
+                <property name="right_attach">2</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_2">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_2">
+                  <object class="GtkLabel" id="bit_label_2">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_2">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">2</property>
-                    <property name="right_attach">3</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">2</property>
+                <property name="right_attach">3</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_3">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_3">
+                  <object class="GtkLabel" id="bit_label_3">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_3">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">3</property>
-                    <property name="right_attach">4</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">3</property>
+                <property name="right_attach">4</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_4">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_4">
+                  <object class="GtkLabel" id="bit_label_4">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_4">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">5</property>
-                    <property name="right_attach">6</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">5</property>
+                <property name="right_attach">6</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_5">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_5">
+                  <object class="GtkLabel" id="bit_label_5">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_5">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">6</property>
-                    <property name="right_attach">7</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">6</property>
+                <property name="right_attach">7</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_6">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_6">
+                  <object class="GtkLabel" id="bit_label_6">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_6">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">7</property>
-                    <property name="right_attach">8</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">7</property>
+                <property name="right_attach">8</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_7">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_7">
+                  <object class="GtkLabel" id="bit_label_7">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_7">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">8</property>
-                    <property name="right_attach">9</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">8</property>
+                <property name="right_attach">9</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_8">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_8">
+                  <object class="GtkLabel" id="bit_label_8">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_8">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">10</property>
-                    <property name="right_attach">11</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">10</property>
+                <property name="right_attach">11</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_9">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_9">
+                  <object class="GtkLabel" id="bit_label_9">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_9">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">11</property>
-                    <property name="right_attach">12</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">11</property>
+                <property name="right_attach">12</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_10">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_10">
+                  <object class="GtkLabel" id="bit_label_10">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_10">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">12</property>
-                    <property name="right_attach">13</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">12</property>
+                <property name="right_attach">13</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_11">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_11">
+                  <object class="GtkLabel" id="bit_label_11">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_11">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">13</property>
-                    <property name="right_attach">14</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">13</property>
+                <property name="right_attach">14</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_12">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_12">
+                  <object class="GtkLabel" id="bit_label_12">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_12">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">15</property>
-                    <property name="right_attach">16</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">15</property>
+                <property name="right_attach">16</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_13">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_13">
+                  <object class="GtkLabel" id="bit_label_13">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_13">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">16</property>
-                    <property name="right_attach">17</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">16</property>
+                <property name="right_attach">17</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_14">
+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkEventBox" id="bit_eventbox_14">
+                  <object class="GtkLabel" id="bit_label_14">
                     <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_14">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">17</property>
-                    <property name="right_attach">18</property>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
                 </child>
+              </object>
+              <packing>
+                <property name="left_attach">17</property>
+                <property name="right_attach">18</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkEventBox" id="bit_eventbox_15">
+                <property name="visible">True</property>
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+                <property name="visible">True</property>
                 <child>
-                  <object class="GtkLabel" id="label30">
+                  <object class="GtkLabel" id="bit_label_63">
                     <property name="visible">True</property>
                     <property name="xalign">0</property>
-                    <property name="label">  </property>
+                    <property name="label"> 0</property>
                   </object>
-                  <packing>
-                    <property name="left_attach">29</property>
-                    <property name="right_attach">30</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label31">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">34</property>
-                    <property name="right_attach">35</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label32">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">4</property>
-                    <property name="right_attach">5</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label33">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">9</property>
-                    <property name="right_attach">10</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label34">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">14</property>
-                    <property name="right_attach">15</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label35">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">19</property>
-                    <property name="right_attach">20</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label36">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">24</property>
-                    <property name="right_attach">25</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label37">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">29</property>
-                    <property name="right_attach">30</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label38">
-                    <property name="visible">True</property>
-                    <property name="xalign">0</property>
-                    <property name="label">  </property>
-                  </object>
-                  <packing>
-                    <property name="left_attach">34</property>
-                    <property name="right_attach">35</property>
-                    <property name="top_attach">2</property>
-                    <property name="bottom_attach">3</property>
-                    <property name="x_options">GTK_FILL</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <object class="GtkEventBox" id="bit_eventbox_0">
-                    <property name="visible">True</property>
-                    <child>
-                      <object class="GtkLabel" id="bit_label_0">
-                        <property name="visible">True</property>
-                        <property name="xalign">0</property>
-                        <property name="label"> 0</property>
-                      </object>
-                    </child>
-                  </object>
-                  <packing>
-                    <property name="x_options">GTK_SHRINK</property>
-                    <property name="y_options"></property>
-                  </packing>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
-                </child>
-                <child>
-                  <placeholder/>
                 </child>
               </object>
+              <packing>
+                <property name="left_attach">38</property>
+                <property name="right_attach">39</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
+              </packing>
             </child>
-          </object>
-          <packing>
-            <property name="expand">False</property>
-            <property name="position">1</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkTable" id="advanced_panel">
-            <property name="visible">True</property>
-            <property name="n_rows">5</property>
-            <property name="n_columns">10</property>
-            <property name="homogeneous">True</property>
             <child>
-              <object class="GtkButton" id="calc_root_button">
-                <property name="label">√</property>
+              <object class="GtkLabel" id="bit_marker_label1">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">47</property>
+                <property name="justify">center</property>
               </object>
               <packing>
-                <property name="left_attach">7</property>
-                <property name="right_attach">8</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">20</property>
+                <property name="right_attach">21</property>
+                <property name="top_attach">1</property>
+                <property name="bottom_attach">2</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_logarithm_button">
-                <property name="label">log</property>
+              <object class="GtkLabel" id="bit_marker_label4">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">15</property>
+                <property name="justify">center</property>
               </object>
               <packing>
-                <property name="left_attach">7</property>
-                <property name="right_attach">8</property>
+                <property name="left_attach">20</property>
+                <property name="right_attach">21</property>
                 <property name="top_attach">3</property>
                 <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_factor_button">
-                <property name="label">fact</property>
+              <object class="GtkLabel" id="label25">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_factor_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the factorize button">Factorize</property>
-                  </object>
-                </child>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">7</property>
-                <property name="right_attach">8</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">4</property>
+                <property name="right_attach">5</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_natural_logarithm_button">
-                <property name="label">ln</property>
+              <object class="GtkLabel" id="label26">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">8</property>
-                <property name="right_attach">9</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">9</property>
+                <property name="right_attach">10</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_abs_button">
+              <object class="GtkLabel" id="label27">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_abs_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the absolute value button">Absolute Value</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label1">
-                    <property name="visible">True</property>
-                    <property name="label">|&lt;i&gt;x&lt;/i&gt;|</property>
-                    <property name="use_markup">True</property>
-                  </object>
-                </child>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">9</property>
-                <property name="right_attach">10</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">14</property>
+                <property name="right_attach">15</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_integer_portion_button">
-                <property name="label">int</property>
+              <object class="GtkLabel" id="label28">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">9</property>
-                <property name="right_attach">10</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">19</property>
+                <property name="right_attach">20</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_fractional_portion_button">
-                <property name="label">frac</property>
+              <object class="GtkLabel" id="label29">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">9</property>
-                <property name="right_attach">10</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">24</property>
+                <property name="right_attach">25</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_divide_button">
-                <property name="label">÷</property>
+              <object class="GtkLabel" id="label30">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">4</property>
-                <property name="right_attach">5</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">29</property>
+                <property name="right_attach">30</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_0_button">
-                <property name="label">0</property>
-                <property name="width_request">50</property>
+              <object class="GtkLabel" id="label31">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">34</property>
+                <property name="right_attach">35</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_multiply_button">
-                <property name="label">×</property>
+              <object class="GtkLabel" id="label32">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
                 <property name="left_attach">4</property>
                 <property name="right_attach">5</property>
                 <property name="top_attach">2</property>
                 <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_subtract_button">
-                <property name="label">−</property>
+              <object class="GtkLabel" id="label33">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">4</property>
-                <property name="right_attach">5</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">9</property>
+                <property name="right_attach">10</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_add_button">
-                <property name="label">+</property>
+              <object class="GtkLabel" id="label34">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">4</property>
-                <property name="right_attach">5</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">14</property>
+                <property name="right_attach">15</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_result_button">
-                <property name="label" translatable="yes" comments="Label on the solve button (clicking this 
solves the displayed calculation)">=</property>
+              <object class="GtkLabel" id="label35">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">6</property>
-                <property name="right_attach">7</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">19</property>
+                <property name="right_attach">20</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_clear_button">
+              <object class="GtkLabel" id="label36">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-                <child>
-                  <object class="GtkImage" id="image1">
-                    <property name="visible">True</property>
-                    <property name="icon-name">edit-clear-symbolic</property>
-                  </object>
-                </child>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">6</property>
-                <property name="right_attach">7</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">24</property>
+                <property name="right_attach">25</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_1_button">
-                <property name="label">1</property>
+              <object class="GtkLabel" id="label37">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">29</property>
+                <property name="right_attach">30</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_2_button">
-                <property name="label">2</property>
+              <object class="GtkLabel" id="label38">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="xalign">0</property>
+                <property name="label">  </property>
               </object>
               <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="left_attach">34</property>
+                <property name="right_attach">35</property>
+                <property name="top_attach">2</property>
+                <property name="bottom_attach">3</property>
+                <property name="x_options">GTK_FILL</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_3_button">
-                <property name="label">3</property>
+              <object class="GtkEventBox" id="bit_eventbox_0">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <child>
+                  <object class="GtkLabel" id="bit_label_0">
+                    <property name="visible">True</property>
+                    <property name="xalign">0</property>
+                    <property name="label"> 0</property>
+                  </object>
+                </child>
               </object>
               <packing>
-                <property name="left_attach">3</property>
-                <property name="right_attach">4</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+                <property name="x_options">GTK_SHRINK</property>
+                <property name="y_options"></property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_4_button">
-                <property name="label">4</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_5_button">
-                <property name="label">5</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_6_button">
-                <property name="label">6</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_7_button">
-                <property name="label">7</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">3</property>
-                <property name="right_attach">4</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_8_button">
-                <property name="label">8</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_9_button">
-                <property name="label">9</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_10_button">
-                <property name="label">A</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_11_button">
-                <property name="label">B</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">3</property>
-                <property name="right_attach">4</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_12_button">
-                <property name="label">C</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_13_button">
-                <property name="label">D</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_14_button">
-                <property name="label">E</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_15_button">
-                <property name="label">F</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">3</property>
-                <property name="right_attach">4</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkToggleButton" id="calc_subscript_button">
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_subscript_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the subscript mode button">Subscript</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label4">
-                    <property name="visible">True</property>
-                    <property name="label">↓n</property>
-                    <property name="use_markup">True</property>
-                  </object>
-                </child>
-              </object>
-              <packing>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkToggleButton" id="calc_superscript_button">
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_superscript_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the superscript mode button">Superscript</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkLabel" id="label3">
-                    <property name="visible">True</property>
-                    <property name="label">↑n</property>
-                    <property name="use_markup">True</property>
-                  </object>
-                </child>
-              </object>
-              <packing>
-                <property name="left_attach">1</property>
-                <property name="right_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_numeric_point_button">
-                <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">2</property>
-                <property name="right_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_memory_button">
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_store_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the store value button">Store</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkHBox" id="hbox20">
-                    <property name="visible">True</property>
-                    <property name="spacing">3</property>
-                    <child>
-                      <object class="GtkLabel" id="label23">
-                        <property name="visible">True</property>
-                        <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
-                      </object>
-                      <packing>
-                        <property name="position">0</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkArrow" id="arrow14">
-                        <property name="visible">True</property>
-                        <property name="arrow_type">down</property>
-                      </object>
-                      <packing>
-                        <property name="expand">False</property>
-                        <property name="position">1</property>
-                      </packing>
-                    </child>
-                  </object>
-                </child>
-              </object>
-              <packing>
-                <property name="left_attach">3</property>
-                <property name="right_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_xor_button">
-                <property name="label">XOR</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">5</property>
-                <property name="right_attach">6</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_or_button">
-                <property name="label">OR</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">5</property>
-                <property name="right_attach">6</property>
-                <property name="top_attach">3</property>
-                <property name="bottom_attach">4</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_and_button">
-                <property name="label">AND</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
-              </object>
-              <packing>
-                <property name="left_attach">5</property>
-                <property name="right_attach">6</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+              <placeholder/>
             </child>
             <child>
-              <object class="GtkButton" id="calc_modulus_divide_button">
-                <property name="label">mod</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="expand">False</property>
+        <property name="position">1</property>
+      </packing>
+    </child>
+    <child>
+      <object class="GtkTable" id="advanced_panel">
+        <property name="visible">True</property>
+        <property name="n_rows">5</property>
+        <property name="n_columns">10</property>
+        <property name="homogeneous">True</property>
+        <child>
+          <object class="GtkButton" id="calc_root_button">
+            <property name="label">√</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">7</property>
+            <property name="right_attach">8</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_logarithm_button">
+            <property name="label">log</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">7</property>
+            <property name="right_attach">8</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_factor_button">
+            <property name="label">fact</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_factor_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the factorize button">Factorize</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">7</property>
+            <property name="right_attach">8</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_natural_logarithm_button">
+            <property name="label">ln</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">8</property>
+            <property name="right_attach">9</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_abs_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_abs_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the absolute value button">Absolute Value</property>
               </object>
-              <packing>
-                <property name="left_attach">5</property>
-                <property name="right_attach">6</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_start_group_button">
-                <property name="label">(</property>
+              <object class="GtkLabel" id="label1">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="label">|&lt;i&gt;x&lt;/i&gt;|</property>
+                <property name="use_markup">True</property>
               </object>
-              <packing>
-                <property name="left_attach">4</property>
-                <property name="right_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
+          </object>
+          <packing>
+            <property name="left_attach">9</property>
+            <property name="right_attach">10</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_integer_portion_button">
+            <property name="label">int</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">9</property>
+            <property name="right_attach">10</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_fractional_portion_button">
+            <property name="label">frac</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">9</property>
+            <property name="right_attach">10</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_divide_button">
+            <property name="label">÷</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="right_attach">5</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_0_button">
+            <property name="label">0</property>
+            <property name="width_request">50</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_multiply_button">
+            <property name="label">×</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="right_attach">5</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_subtract_button">
+            <property name="label">−</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="right_attach">5</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_add_button">
+            <property name="label">+</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="right_attach">5</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_result_button">
+            <property name="label" translatable="yes" comments="Label on the solve button (clicking this 
solves the displayed calculation)">=</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">6</property>
+            <property name="right_attach">7</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_clear_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
             <child>
-              <object class="GtkButton" id="calc_end_group_button">
-                <property name="label">)</property>
+              <object class="GtkImage" id="image1">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="icon-name">edit-clear-symbolic</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">6</property>
+            <property name="right_attach">7</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_1_button">
+            <property name="label">1</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_2_button">
+            <property name="label">2</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_3_button">
+            <property name="label">3</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">3</property>
+            <property name="right_attach">4</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_4_button">
+            <property name="label">4</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_5_button">
+            <property name="label">5</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_6_button">
+            <property name="label">6</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_7_button">
+            <property name="label">7</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">3</property>
+            <property name="right_attach">4</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_8_button">
+            <property name="label">8</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_9_button">
+            <property name="label">9</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_10_button">
+            <property name="label">A</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_11_button">
+            <property name="label">B</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">3</property>
+            <property name="right_attach">4</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_12_button">
+            <property name="label">C</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_13_button">
+            <property name="label">D</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_14_button">
+            <property name="label">E</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_15_button">
+            <property name="label">F</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">3</property>
+            <property name="right_attach">4</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkToggleButton" id="calc_subscript_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_subscript_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the subscript mode button">Subscript</property>
               </object>
-              <packing>
-                <property name="left_attach">5</property>
-                <property name="right_attach">6</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_shift_left_button">
+              <object class="GtkLabel" id="label4">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_shift_left_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the shift left button">Shift Left</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkHBox" id="hbox11">
-                    <property name="visible">True</property>
-                    <property name="spacing">3</property>
-                    <child>
-                      <object class="GtkLabel" id="label7">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="label">&lt;</property>
-                      </object>
-                      <packing>
-                        <property name="position">0</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkArrow" id="arrow5">
-                        <property name="visible">True</property>
-                        <property name="arrow_type">down</property>
-                      </object>
-                      <packing>
-                        <property name="expand">False</property>
-                        <property name="position">1</property>
-                      </packing>
-                    </child>
-                  </object>
-                </child>
+                <property name="label">↓n</property>
+                <property name="use_markup">True</property>
               </object>
-              <packing>
-                <property name="left_attach">6</property>
-                <property name="right_attach">7</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
-            <child>
-              <object class="GtkButton" id="calc_shift_right_button">
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_shift_right_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the shift right button">Shift Right</property>
-                  </object>
-                </child>
-                <child>
-                  <object class="GtkHBox" id="hbox10">
-                    <property name="visible">True</property>
-                    <property name="spacing">3</property>
-                    <child>
-                      <object class="GtkLabel" id="label6">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="label">&gt;</property>
-                      </object>
-                      <packing>
-                        <property name="position">0</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkArrow" id="arrow4">
-                        <property name="visible">True</property>
-                        <property name="arrow_type">down</property>
-                      </object>
-                      <packing>
-                        <property name="expand">False</property>
-                        <property name="position">1</property>
-                      </packing>
-                    </child>
-                  </object>
-                </child>
+          </object>
+          <packing>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkToggleButton" id="calc_superscript_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_superscript_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the superscript mode button">Superscript</property>
               </object>
-              <packing>
-                <property name="left_attach">7</property>
-                <property name="right_attach">8</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_character_button">
-                <property name="label">á</property>
+              <object class="GtkLabel" id="label3">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_character_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the insert character button">Insert Character</property>
-                  </object>
-                </child>
+                <property name="label">↑n</property>
+                <property name="use_markup">True</property>
               </object>
-              <packing>
-                <property name="left_attach">8</property>
-                <property name="right_attach">9</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
-            <child>
-              <object class="GtkButton" id="calc_not_button">
-                <property name="label">NOT</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">1</property>
+            <property name="right_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_numeric_point_button">
+            <property name="label" comments="Label is set in gtk.c to comply with LC flags">.</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">2</property>
+            <property name="right_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_memory_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_store_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the store value button">Store</property>
               </object>
-              <packing>
-                <property name="left_attach">6</property>
-                <property name="right_attach">7</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_factorial_button">
+              <object class="GtkHBox" id="hbox20">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_factorial_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the factorial button">Factorial</property>
+                <property name="spacing">3</property>
+                <child>
+                  <object class="GtkLabel" id="label23">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes" comments="The label on the memory 
button">x</property>
                   </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
                 </child>
                 <child>
-                  <object class="GtkLabel" id="label14">
+                  <object class="GtkArrow" id="arrow14">
                     <property name="visible">True</property>
-                    <property name="label">&lt;i&gt;x&lt;/i&gt;!</property>
-                    <property name="use_markup">True</property>
+                    <property name="arrow_type">down</property>
                   </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="position">1</property>
+                  </packing>
                 </child>
               </object>
-              <packing>
-                <property name="left_attach">8</property>
-                <property name="right_attach">9</property>
-                <property name="top_attach">4</property>
-                <property name="bottom_attach">5</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">3</property>
+            <property name="right_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_xor_button">
+            <property name="label">XOR</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">5</property>
+            <property name="right_attach">6</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_or_button">
+            <property name="label">OR</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">5</property>
+            <property name="right_attach">6</property>
+            <property name="top_attach">3</property>
+            <property name="bottom_attach">4</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_and_button">
+            <property name="label">AND</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">5</property>
+            <property name="right_attach">6</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_modulus_divide_button">
+            <property name="label">mod</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">5</property>
+            <property name="right_attach">6</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_start_group_button">
+            <property name="label">(</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">4</property>
+            <property name="right_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_end_group_button">
+            <property name="label">)</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">5</property>
+            <property name="right_attach">6</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_shift_left_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_shift_left_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the shift left button">Shift Left</property>
+              </object>
             </child>
             <child>
-              <object class="GtkButton" id="calc_inverse_button">
+              <object class="GtkHBox" id="hbox11">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_inverse_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the inverse button">Inverse</property>
+                <property name="spacing">3</property>
+                <child>
+                  <object class="GtkLabel" id="label7">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="label">&lt;</property>
                   </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
                 </child>
                 <child>
-                  <object class="GtkLabel" id="label20">
+                  <object class="GtkArrow" id="arrow5">
                     <property name="visible">True</property>
-                    <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;</property>
-                    <property name="use_markup">True</property>
-                    <property name="justify">center</property>
+                    <property name="arrow_type">down</property>
                   </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="position">1</property>
+                  </packing>
                 </child>
               </object>
-              <packing>
-                <property name="left_attach">9</property>
-                <property name="right_attach">10</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">6</property>
+            <property name="right_attach">7</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_shift_right_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_shift_right_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the shift right button">Shift Right</property>
+              </object>
             </child>
             <child>
-              <object class="GtkButton" id="calc_x_pow_y_button">
+              <object class="GtkHBox" id="hbox10">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="focus_on_click">False</property>
-                <child internal-child="accessible">
-                  <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
-                    <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name 
for the exponentiation (x to the power of y) button">Exponent</property>
+                <property name="spacing">3</property>
+                <child>
+                  <object class="GtkLabel" id="label6">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="label">&gt;</property>
                   </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
                 </child>
                 <child>
-                  <object class="GtkLabel" id="x_pow_y_label">
+                  <object class="GtkArrow" id="arrow4">
                     <property name="visible">True</property>
-                    <property 
name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
-                    <property name="use_markup">True</property>
+                    <property name="arrow_type">down</property>
                   </object>
+                  <packing>
+                    <property name="expand">False</property>
+                    <property name="position">1</property>
+                  </packing>
                 </child>
               </object>
-              <packing>
-                <property name="left_attach">8</property>
-                <property name="right_attach">9</property>
-                <property name="top_attach">2</property>
-                <property name="bottom_attach">3</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
-            <child>
-              <object class="GtkButton" id="calc_ones_complement_button">
-                <property name="label">ones</property>
-                <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">7</property>
+            <property name="right_attach">8</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_character_button">
+            <property name="label">á</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_character_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the insert character button">Insert Character</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">8</property>
+            <property name="right_attach">9</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_not_button">
+            <property name="label">NOT</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">6</property>
+            <property name="right_attach">7</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_factorial_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_factorial_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the factorial button">Factorial</property>
               </object>
-              <packing>
-                <property name="left_attach">6</property>
-                <property name="right_attach">7</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_twos_complement_button">
-                <property name="label">twos</property>
+              <object class="GtkLabel" id="label14">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="label">&lt;i&gt;x&lt;/i&gt;!</property>
+                <property name="use_markup">True</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">8</property>
+            <property name="right_attach">9</property>
+            <property name="top_attach">4</property>
+            <property name="bottom_attach">5</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_inverse_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_inverse_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the inverse button">Inverse</property>
               </object>
-              <packing>
-                <property name="left_attach">7</property>
-                <property name="right_attach">8</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <object class="GtkButton" id="calc_trunc_button">
-                <property name="label">trunc</property>
+              <object class="GtkLabel" id="label20">
                 <property name="visible">True</property>
-                <property name="can_focus">True</property>
-                <property name="receives_default">True</property>
-                <property name="use_underline">True</property>
-                <property name="focus_on_click">False</property>
+                <property name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;−1&lt;/sup&gt;</property>
+                <property name="use_markup">True</property>
+                <property name="justify">center</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="left_attach">9</property>
+            <property name="right_attach">10</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_x_pow_y_button">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="focus_on_click">False</property>
+            <child internal-child="accessible">
+              <object class="AtkObject" id="calc_x_pow_y_button-atkobject">
+                <property name="AtkObject::accessible-name" translatable="yes" comments="Accessible name for 
the exponentiation (x to the power of y) button">Exponent</property>
               </object>
-              <packing>
-                <property name="left_attach">8</property>
-                <property name="right_attach">9</property>
-                <property name="top_attach">1</property>
-                <property name="bottom_attach">2</property>
-                <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-                <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
-              </packing>
             </child>
             <child>
-              <placeholder/>
+              <object class="GtkLabel" id="x_pow_y_label">
+                <property name="visible">True</property>
+                <property 
name="label">&lt;i&gt;x&lt;/i&gt;&lt;sup&gt;&lt;i&gt;y&lt;/i&gt;&lt;/sup&gt;</property>
+                <property name="use_markup">True</property>
+              </object>
             </child>
           </object>
           <packing>
-            <property name="position">2</property>
+            <property name="left_attach">8</property>
+            <property name="right_attach">9</property>
+            <property name="top_attach">2</property>
+            <property name="bottom_attach">3</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_ones_complement_button">
+            <property name="label">ones</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">6</property>
+            <property name="right_attach">7</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="calc_twos_complement_button">
+            <property name="label">twos</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">7</property>
+            <property name="right_attach">8</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
           </packing>
         </child>
+        <child>
+          <object class="GtkButton" id="calc_trunc_button">
+            <property name="label">trunc</property>
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="receives_default">True</property>
+            <property name="use_underline">True</property>
+            <property name="focus_on_click">False</property>
+          </object>
+          <packing>
+            <property name="left_attach">8</property>
+            <property name="right_attach">9</property>
+            <property name="top_attach">1</property>
+            <property name="bottom_attach">2</property>
+            <property name="x_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+            <property name="y_options">GTK_EXPAND | GTK_SHRINK | GTK_FILL</property>
+          </packing>
+        </child>
+        <child>
+          <placeholder/>
+        </child>
       </object>
+      <packing>
+        <property name="position">2</property>
+      </packing>
     </child>
   </object>
   <object class="GtkDialog" id="character_code_dialog">
diff --git a/src/math-buttons.vala b/src/math-buttons.vala
index 2ff17e4..beb0405 100644
--- a/src/math-buttons.vala
+++ b/src/math-buttons.vala
@@ -16,10 +16,6 @@ public enum ButtonMode
     PROGRAMMING
 }
 
-/* FIXME: Remove when depend on Vala >= 0.20.2
- * https://bugzilla.gnome.org/show_bug.cgi?id=697960 */
-extern uint gtk_builder_add_objects_from_resource (Gtk.Builder builder, string resource_path, [CCode 
(array_length = false)] string[] object_ids) throws GLib.Error;
-
 public class MathButtons : Gtk.Box
 {
     private MathEquation equation;
@@ -232,11 +228,6 @@ public class MathButtons : Gtk.Box
 
     private Gtk.Widget load_mode (ButtonMode mode)
     {
-        const string objects[] = { "button_panel", "character_code_dialog", "currency_dialog",
-                                   "ctrm_dialog", "ddb_dialog", "fv_dialog", "gpm_dialog",
-                                   "pmt_dialog", "pv_dialog", "rate_dialog", "sln_dialog",
-                                   "syd_dialog", "term_dialog", "adjustment1", "adjustment2", null };
-
         Gtk.Builder builder;
         string builder_resource;
         switch (mode)
@@ -270,9 +261,7 @@ public class MathButtons : Gtk.Box
 
         try
         {
-            /* FIXME: Replace with builder.add_objects_from_resource when depend on Vala >= 0.20.2
-             * https://bugzilla.gnome.org/show_bug.cgi?id=697960 */
-            gtk_builder_add_objects_from_resource (builder, 
"/org/gnome/calculator/%s".printf(builder_resource), objects);
+            builder.add_from_resource ("/org/gnome/calculator/%s".printf(builder_resource));
         }
         catch (Error e)
         {
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