SGML on the Desktop / 3. Resources / 3.3. XML


3.3. XML

XML Logo

XML is a project originating at *W3C to develop a future-proof successor to HTML. It is a subset of SGML (see *appendix A of the *XML spec, or a longer discussion in a *W3C note from James Clark) which removes some of the features and options, and hence some of the overwhelming flexibility of SGML. Crucially, however, XML retains SGML's extensibility, and does not have HTML's crippling restriction to a single set of markup elements to describe an infinite variety of documents.

See also the *annotated spec

Norman Gray
21 July 1998