[gnome-user-docs] Add information of the topic.

[Julita Inca <jinca src gnome org>]

commit edf798cf3075dc37e34ba9c0b65ef06d68754f7d
Author: Julita Inca <yrazes gmail com>
Date:   Mon Feb 20 13:17:29 2012 -0500

    Add information of the topic.

 gnome-help/C/documents-previews.page |   22 ++++++++++++++--------
 1 files changed, 14 insertions(+), 8 deletions(-)
---
diff --git a/gnome-help/C/documents-previews.page b/gnome-help/C/documents-previews.page
index b4edc98..a788d64 100644
--- a/gnome-help/C/documents-previews.page
+++ b/gnome-help/C/documents-previews.page
@@ -21,12 +21,18 @@
     stored remotely</p>
   </comment>
 
-  <p>Short introductory text...</p>
-
-  <steps>
-    <item><p>First step...</p></item>
-    <item><p>Second step...</p></item>
-    <item><p>Third step...</p></item>
-  </steps>
-
+  <p>Every time you open <app>Documents</app> you can see a preview thumbnail
+  in most of the documents.</p>
+  <p>The documents that presented the preview thumbnail, are stored locally.</p>
+  <p>You can not be able to see the preview thumbnail of others (or they are 
+  presented in blank) because they are stored in a remote server like 
+  <gui>Google Docs</gui>.</p>
+  <p>If you want to see the preview thumbnail of the documents that are stored 
+  in remote servers, you may download them and then it will generate a thumbnail
+  because they are going to be stored locally in your computer.</p>
+  <note style="important">
+  <p>The content of the document from <gui>Google Docs</gui> is going to be 
+  updated at the time you downloaded the document.</p><p>If you want to read an
+  edit it online as you were doing before, it is better to not download.</p>
+  </note>
 </page>