Extensible hypertext markup (XHTML)
Extensible Hypertext Markup Language (XHTML) is a markup language that combines HTML and XML. It's used for creating web pages and is known for its stricter syntax rules than HTML, ensuring more rigorous standards compliance and cross-browser compatibility.
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Wikipedia
XHTML, an XML markup language, extends versions of HTML, the primary language for creating web pages. Unlike HTML, XHTML documents are well-formed and can be parsed using standard XML parsers. Recognized by the World Wide Web Consortium, XHTML is now known as "the XML syntax for HTML.



