XHTML

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Extensible Hypertext Markup Language (XHTML) is a family of XML markup languages that mirror or extend versions of the widely used Hypertext Markup Language (HTML).

While HTML, prior to HTML5, was defined as an application of Standard Generalized Markup Language (SGML), a flexible markup language framework, XHTML is an application of XML, a more restrictive subset of SGML.

XHTML documents are well-formed and may therefore be parsed using standard XML parsers. HTML, by contrast, requires a lenient HTML-specific parser.

XHTML 1.0 became a World Wide Web Consortium (W3C) Recommendation on January 26, 2000.

XHTML 1.1 became a W3C Recommendation on May 31, 2001.

The standard known as XHTML5 is being developed as an XML adaptation of the HTML5 specification

External Links

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