XML allows for external entities; what about XHTML?
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        Published on 2010-05-04T12:56:06Z
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            2010/05/04
            12:58 UTC
        
        
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This question about web page 'inclusion' triggered my curiosity. The XML allows you to specify a reference to an 'external' portion. Can you do the same in XHTML, then?
XML example:
<!ENTITY foo SYSTEM "http://www.mydomain.com/logo.gif" NDATA GIF87A>
...
<SOMETHING>&foo;</SOMETHING>
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