My fault, I misworded my question.  I know I could use XInclude, XLink, 
XPointer, and any other XML libraries designed to extend XML-based 
languages.  I meant, are there any plans for the creation of 
schemas/DTD's that allow one to use XInclude within XHTML, without 
having to resort to either writing a custom schema or accepting that 
validation will not occur?

Mark Birbeck wrote:

>Kelly,
>
>There is nothing to *stop* you using XInclude with XHTML since it operates
>at the XML level, rather than XHTML. By the time the XML document reaches an
>XHTML processor, any XIncludes will have already been processed.
>
>While I'm here, the use case you describe--building documents without a
>server--is a great one, and something that I too am very much interested in.
>Another feature that complements what you describe is the idea of
>'client-side variables'; in the same way that you can pass name/value pairs
>to a server, or give values via parameters to some command-line application,
>so we need a way to pass variables to an XHTML application processor. You'll
>probably have seen that some scripted HTML slideshow apps will jump to a
>specific slide, so I'm only talking about generalising that approach.
>
>Coupled with XInclude it would be pretty powerful!
>
>Regards,
>
>Mark
>
>
>Mark Birbeck
>CEO
>x-port.net Ltd.
>
>e: Mark.Birbeck@x-port.net
>t: +44 (0) 20 7689 9232
>w: http://www.formsPlayer.com/ 
>
>Download our XForms processor from
>http://www.formsPlayer.com/  
>


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