Extensible Markup Language (XML) XML: Overview Several introductory and tutorial articles on the Extensible Markup Language (XML) are referenced in the shorter XML Introduction document.
Most articles are accessible online. "The Extensible Markup Language (XML) is the universal format for structured documents and data on the Web. " -- W3C XML Web site, 2000-07-06. The Extensible Markup Language (XML) is descriptively identified in the XML 1.0 W3C Recommendation as "an extremely simple dialect [or 'subset'] of SGML" the goal of which "is to enable generic SGML to be served, received, and processed on the Web in the way that is now possible with HTML," for which reason "XML has been designed for ease of implementation, and for interoperability with both SGML and HTML.
" Note that the "HTML" referenced in the preceding sentence (bis) means HTML 4.0 and 3.2 which were in common use as of 10-February-1998, when the XML 1.0 specification was published as a W3C Recommendation. DeveloperWorks : XML tutorials, code, and forums. Planet XMLhack: Aggregated weblogs from XML hackers and commentators. XML development, XML resources, XML specifications.