Jan Egil Kristiansen wrote:
> I'd like a DOCTYPE to make it possible to validate XHTML with 
> well-formed extensions from any other namespace.
> 
> See http://styrheim.weblogg.no/081204103845_the_x_in_xhtml.html 

Why would you need this? When you are sending XHTML with the proper MIME
type the browser can give you feedback.

Furthermore, I guess DTDs won't have much of a feature within XML.


-- 
  Anne van Kesteren
  <http://annevankesteren.nl/ >