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Web Developer Resource Index: XML

The Extensible Markup Language is a general-purpose (or meta) language for describing data or for creating other markup languages. XHTML is an example of one language defined in terms of XML. XML has no pre-defined elements of its own—just a simple, and strict, syntax. It is a simplification and enhancement of SGML (also a meta-language), from which HTML was formulated.

In addition to its use as a method of describing structured documents, XML is also designed for distributing data across a network such as the Internet. Popular languages already in use based on XML include RSS, RDF, SVG and MathML.

XML can also be used to transform documents from one format into another, such as converting data in a XML source file into XHTML using XSLT. This is similar in concept to how CSS is used to apply presentational styles to HTML or XHTML documents.

Updated: Wednesday, October 29th, 2008 @ 1:53 AM EDT

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Last updated: Wednesday, October 29th, 2008 @ 1:53 AM EDT [2008-10-29T05:53:46Z]   home

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