1. www.w3.org/TR/xhtml1

    26/01/2000 · Official W3C specification for the markup language.

  2. www.w3.org/TR/2000/REC-xml-20001006

    06/10/2000 · Abstract. The Extensible Markup Language (XML) is a subset of SGML that is completely described in this document. Its goal is to enable generic SGML to …