Why does this page render badly?

Most likely this is due to a bug in your browser's support for Cascading Style Sheets. This page has been designed to convey it's information content to all clients, but it may lack of formatting and layout in older browsers. If you find this page dull it's likely an artefact of your browser's lack of support for CSS and I would encourage you to get one that does (it's been available for 5 years now!). If on the other hand this site fails to be understandable or accesible regardless of the browser you use, we would very much like to know about it. Send us feedback, as outlined on our Feedback Page, and we'll do out level best to remedy the situation ASAP.

Validate Files

You can enter a URI in the Address field below, or choose a file to upload. There is also an Extended Interface available if you want to set any advanced options.

Recent Updates

These are the most recent major changes to this service. See "What's New" for more details.

October 06, 2001
Finished web site redesign and added Tip-of-the-Day.
September 26, 2001
Added experimental support for SVG 1.0 and spec-prod 2.0.
September 13, 2001
Added support for XHTML 1.1, XHTML Basic 1.0, and MathML 2.0.