[xwiki-users] Edit page sections

Hi, I'm using XWiki Enterprise 1.3.2 are have a simple question. How do you do enable page section edits? If I look at something like the sandbox pages, in between the "Training Zone" heading and the "You can practice editing here..." text, there is a horizontal rule and just below this on the right is a pencil icon which links to http://<host>/xwiki/bin/edit/Sandbox/WebHome?xpage=wysiwyg&section=1 Examining the page source seems to show that this is the relevant code <a style='text-decoration: none;' title='Edit section: Training Zone' href='/xwiki/bin/edit/Sandbox/WebHome?xpage=wysiwyg&amp;section=1'>edit</a> but I can't find how to demarcate sections within a page and get the 'edit button'. I've looked at the User guide, searched the documentation for "section", looked at the FAQs and searched the user forum. I found these posts http://www.nabble.com/Edit-sections-to14756105.html#a14756105 http://www.nabble.com/xwiki.section.edit-to13625877.html#a13625877 but I have xwiki.section.edit=1 set already, and I'm using level 1 and 2 titles. I still don't get the 'edit button' on my pages, but it is there on the sandbox pages. Am I missing something obvious? Many thanks Chris