[gimp-help-2] Specifically mention the way to complete cropping as requested in #754327

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 31680cb711aa6c4344f6e3bc78a4810810d6901c
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Thu Dec 24 01:35:54 2015 +0300

    Specifically mention the way to complete cropping as requested in #754327

 src/tutorial/quickies.xml |   16 +++++++++-------
 1 files changed, 9 insertions(+), 7 deletions(-)
---
diff --git a/src/tutorial/quickies.xml b/src/tutorial/quickies.xml
index 12d0364..5f52501 100644
--- a/src/tutorial/quickies.xml
+++ b/src/tutorial/quickies.xml
@@ -426,9 +426,11 @@
     areas of the selected crop area, the cursor changes. You can then drag the
     rectangle's corners or edges to change the dimensions of the selected area.
     As shown in the figure above, as the crop area is resized, the dimensions
-    and ratio are shown in the status bar. See 
+    and ratio are shown in the status bar. Double-click inside the rectangle 
+    or press <keycap>Enter</keycap> to complete cropping. See 
     <xref linkend="gimp-tool-crop" /> for more information on cropping in 
-    <acronym>GIMP</acronym>. If you would like to crop the image in a specific
+    <acronym>GIMP</acronym>.</para>
+    <para>If you would like to crop the image in a specific
     aspect ratio, such as a square, make sure the tool options are visible ( 
     <menuchoice moreinfo="none">
       <guimenu moreinfo="none">Windows</guimenu>
@@ -437,11 +439,11 @@
     </menuchoice>). In the Tool Options dockable, check the mark next to 
     <guilabel>Fixed</guilabel> and make sure the drop-down box next to it is 
     set to <guilabel>Aspect Ratio</guilabel>. You can now type the desired 
-    aspect ratio on the text box below, such as <quote>1:1</quote>. You also 
-    have controls to change the aspect from landscape to portrait. After you 
-    set the aspect ratio, drag one of the corners of the crop rectangle to 
-    update it. The rectangle changes to the chosen ratio, and when you drag 
-    it should maintain that ratio.</para>
+    aspect ratio on the text box below, such as <quote>1:1</quote>.</para>
+    <para>You also have controls to change the aspect from landscape to 
+    portrait. After you set the aspect ratio, drag one of the corners of the 
+    crop rectangle to update it. The rectangle changes to the chosen ratio, 
+    and when you drag it should maintain that ratio.</para>
   </sect2>
   
   <sect2 id="gimp-tutorial-quickie-info">