diff --git a/handbook/update.htm b/handbook/update.htm
index 7b83901ab..ef14a6a4f 100644
--- a/handbook/update.htm
+++ b/handbook/update.htm
@@ -179,6 +179,10 @@ then restart nautilus <tt>nautilus -q</tt>. If it works, you'll be able to see t
 
 <p>Simple changes to static files will take effect immediately, but changes to dynamically-generated files (cave descriptions, QM lists etc) will not take effect, until the server runs the expoweb-update script.</p>
 
+<h3><a id="editthispage">Using 'Edit This Page'</a></h3>
+<p>This edits the file served by the webserver (Apache) on expo.survex.com but it does not update the copy of the file in the repository in expo.survex.com. To properly finish the job you need to use putty to ssh into expo.survex.com and run "hg diff" and then "hg commit" and "hg fetch" in the directory /home/expo/expoweb .</p>
+
+
 <h3><a id="Mercurialinwindows">Using Mercurial/TortoiseHg in Windows</a></h3>
 
 <p>Read the instructions for setting up TortoiseHG in <a href="tortoise/tortoise-win.htm">Aled's Windows 101</a>.