|The Extensible Hypertext Markup Language is a reformulation of HTML in XML. W3C|
XHTML 1.0 became a W3C Recommendation in January 2000, with a Second
Edition in August 2002. The specification is published at http://www.w3.org/TR/xhtml1/. Modularization
of XHTML, which became a Recommendation in April 2001, is published
XHTML 1.1, module-based XHTML, which became a Recommendation in May
2001, is published at http://www.w3.org/TR/xhtml11/. A subset of
XHTML 1.1, XHTML Basic, became a W3C Recommendation in December 2000,
and is published at http://www.w3.org/TR/xhtml-basic. Finally,
work on XHTML 2.0 has started, and working drafts are available at
XHTML 1.0 is a reformulation of HTML 4 as an XML 1.0 application. The
specification defines three DTDs corresponding to the ones defined by
HTML 4. The semantics of the elements and their attributes are
defined in the W3C Recommendation for HTML 4, and provide the
foundation for future extensibility of XHTML. Compatibility with
existing HTML user agents is possible by following a small set of
guidelines. XHTML 1.1 reformulates HTML as a set of modules, and
XHTML Basic creates a subset of XHTML for use on smaller devices.
XHTML 2.0 is now under development, and represents the first major
changes to the HTML vocabulary since HTML 4.0.
|Hypertext Markup Language is the markup language for World Wide Web documents. W3C|
HTML 4.01 is the latest version of the W3C Recommendation, dated
December 1999. The specification is published at http://www.w3.org/TR/html401/.
In addition to the text, multimedia, and hyperlink features of
previous versions, HTML 4 supports more multimedia options, scripting
languages, and stylesheets, as well as better printing facilities and
documents that are more accessible to users with disabilities. HTML 4
also takes great strides towards the internationalization of documents.