Editing Repository configuration (section)

===XHTML===
These files use HTML elements (and other elements too). XHTML is a fairly new version of HTML which is backwards compatable with HTML 4 but written using XML, not SGML. This means that it is much stricter but less ambiguous and easier to parse and modify. Assuming you know HTML, the main differences are as follows:

; All tags must be closed : All elements must be closed, even ones such as &lt;li&gt;. Tags which do not have a close tag in HTML, like <tt>&lt;br&gt;</tt> or <tt>&lt;img src="foo"&gt;</tt> still must be closed eg. <tt>&lt;img src="foo"&gt;&lt;/img&gt;</tt> - this can be abbreviated as: <tt> &lt;img src="foo" /&gt;</tt>
; All tags and attributes must be lower case : Self explanitary.
; Strict definition of what tags may appear within others : Not actually checked by EPrints. It will let any rubbish past as long as it's valid XML. But that's no reason to be naughty.
; All attributes must be wrapped in quotes : In HTML the values of attributes do not have to be wrapped in quotes, but in XML (and therefore XHTML) they do.
; All attributes must have a value : In HTML some attribues do not require a value, for example <tt>&lt;hr noshade&gt;</tt> In XHTML it is represented as <tt> &lt;hr noshade="noshade" /&gt; </tt>

So in summary, the HTML:
<code>
 &lt;img SRC=someurl&gt;
 &lt;hr NOSHADE WIDTH=2&gt;
 &lt;P&gt;Foo bar&lt;/P&gt;
</code>
should become in XHTML:
<code>
 &lt;img src="someurl" /&gt;
 &lt;hr noshade="noshade" width="2" /&gt;
 &lt;p&gt;Foo bar&lt;/p&gt;
</code>
And that's more or less it. See http://www.w3c.org/ for a complete description.