See also:

• Computers: Data Formats: Markup Languages: SGML  (26)
• Reference: Libraries: Library and Information Science: Technical Services: Cataloguing: Metadata  (187)

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• Extensible Markup Language (XML) - Main page for World Wide Web Consortium (W3C) XML activity and information.
• XML Activity Statement - An executive overview of W3C's current and historical work on the Extensible Markup Language (XML).