> I never understood why there wasn't an <include> > element in HTML, that would just paste the content of > the linked document. Why wasn't such an ele

> I never understood why there wasn't an <include> > element in HTML, that would just paste the content of > the linked document. Why wasn't such an element added > in the late 90's or early 2000? As far as I know, for SGML (and therefore old fashioned XML, too), 'include' gets realized via parsing of external &entities;. That's how the Mozilla XUL applications (Seamonkey, Firefox, Thunderbird) etc. realized localization, for example. I don't know, when XInclude has first been ratified (the current, 2nd revision, of the spec is from 2006), but with it, a generic inclusion mechanism exists for XML, therefore also for XHTML. With XHTML you could (in theory, as said, the spec is there) use XInclude. <?xml version='1.0'?> <html xmlns="http:www.w3.org/1999/xhtml" xmlns:xi="http://www.w3.org/2001/XInclude"> <head> </head> <body> <p>120 MHz is adequate for an average home user.</p> <xi:include href="disclaimer.xml"/> </body> </html> I am not quite sure, yet, how namespace mixins are handled in XHTML, I think, one must define a new schema (which, honestly is a crappy requirement and should be abandoned), effectively creating an XHTML+XInclude document type, but that may be only a real issue for strict validation.