[pitivi] help: add Middle pane section to mainwindow.page

[Jean-François Fortin Tam <jfft src gnome org>]

commit 15d7ef4752235915a6d11999b2689c4f3f592ef9
Author: Tomas Karger <tomkarger gmail com>
Date:   Wed Feb 5 16:57:54 2014 +0100

    help: add Middle pane section to mainwindow.page

 help/C/mainwindow.page |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/help/C/mainwindow.page b/help/C/mainwindow.page
index 9968322..ec20207 100644
--- a/help/C/mainwindow.page
+++ b/help/C/mainwindow.page
@@ -114,4 +114,9 @@
       </note>
     </section>
 
+    <section>
+     <title>Middle pane</title>
+      <p>The middle pane contains <gui>Clip configuration</gui>, <gui>Transitions</gui> and <gui>Title 
editor</gui>. You can switch between them by selecting the appropriate tab. The <gui>Clip configuration</gui> 
allows you to activate, deactivate or configure settings of effects applied to a selected clip. 
<gui>Transitions</gui> let you pick and configure the transition type when two clips overlap in the timeline. 
With <gui>Title editor</gui> you can create new clips with titles or add titles to existing ones.</p>
+    </section>
+
 </page>