diff --git a/src/editor/simple/about.html b/src/editor/simple/about.html
index 337c453b0..9ad725eca 100644
--- a/src/editor/simple/about.html
+++ b/src/editor/simple/about.html
@@ -131,6 +131,15 @@ Error checks:
   strings can be entered.
 </ul>
 
+<h3>Testing grammars</h3>
+
+By pressing the <strong>Upload</strong> button,
+a grammars can be uploaded to the GF server.
+I will then be compiled with GF, and any errors not checked by the editor
+will be detected and reported. If the grammar is free from errors, the user
+can test the grammar by clicking on links to the online GF shell, the Minibar
+or the Translation Quiz.
+
 <h3>Future work</h3>
 
 This prototype gives an idea of how a web based GF grammar editor could work.
@@ -148,7 +157,7 @@ to be accessed from multiple devices.
 
 <hr>
 <div class=modtime><small>
-<!-- hhmts start --> Last modified: Mon Jan 24 17:20:37 CET 2011 <!-- hhmts end -->
+<!-- hhmts start --> Last modified: Fri Feb 18 15:18:05 CET 2011 <!-- hhmts end -->
   </small></div>
 <address>
 <a href="http://www.cse.chalmers.se/~hallgren/">TH</a>