Posted by John Salerno on 01/22/06 23:09

Ok, I understand that XHTML and HTML are basically the same, but that
XHTML requires a stricter structure, which it inherits from XML. But
what is meant when someone says that XHTML *is* XML? I know that HTML is
an SGML language, and XHTML is an XML language, but what does that
really mean? It seems to suggest that I can create my own tags in XHTML
(since you can in XML), but I doubt that's correct. Is it safe to say
that XHTML is a completely new language based on XML that just happens
to have all the same-named tags as HTML?

Thanks.

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