Markup Language (XML) is the universal format for structured documents
and data on the Web. The base specifications are XML
1.0 and Namespaces.
The W3C's XML Activity Statement
provides an overview of its work on this topic. The W3C's home page provides links to all of its
The W3C also provides a page listing all of its technical reports (TRs) and publications. A listing of W3C Recommendations that are and are not included in the Federal Enterprise Architecture (FEA) Technical Reference Model (TRM) is provided here. The TRM itself is available in Strategy Markup Language (StratML) format in plain XML text and styled with a hyperlink index.On May 12, 2009, the W3C's Electronic Government Interested Group (eGov IG) issued a note entitled "Improving Access to Government through Better Use of the Web."
XML-related standards can also be discovered by querying the American National Standards Institute's (ANSI) advanced search feature.
Ken Sall's Big Picture, initially compiled in 2003, provides a graphical depiction linking to more than 80 XML specifications, with a color-coded scheme indicating their levels of maturity.
The Cover Pages are an extensive source of news and other information on XML standards, products and services.
Naming and Design RulesThe following XML naming and design rules and guidelines have been issued:
Metadata Registry Specifications
The power of XML can be realized only if communities of interest are using the same vocabularies. Such XML vocabularies can be shared via a registry/repository containing the appropriate elements of metadata to facilitate discovery, retrieval, and usage.
There are a number of relevant metadata specifications, some emerging and some well-established. The ISO/IEC 11179 family of specifications is one such well-established standard. Information on it and related standards can be found on INCITS' Metadata Standards Technical Committee site.
Information on the XML metadata registry specification developed by the Organization for the Advancement of Structured Information Standards (OASIS) is available on its ebXML Registry Technical Committee site.
Section 508 of the Rehabilitation Act requires Federal agencies to make their electronic and information technology accessible to people with disabilities. Tools and resources to assist agencies with compliance are available on the Section508.gov site.