Xml + xhtml??

XML (Extensible Markup Language) is a standard for creating markup languages which describe the structure of data. It is not a fixed set of elements like HTML, but rather, it is like SGML (Standard Generalized Markup Language) in that it is a metalanguage, or a language for describing languages. XML enables authors to define their own tags. XML is a formal specification of the World Wide Web Consortium.

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XHTML is the next generation of HTML and is a hybrid between HTML and XML. XML was designed to describe data. HTML was designed to display data. XHTML is much stricter than HTML. Not all browers support XML so XHTML provides an intermediary soluton and can be interpreted by XML and HTML browsers. For further information see: http://www.w3c.org/MarkUp/

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