XML.com FAQs > D. Developers and Implementors (including WebMasters and server operators)
Question:  D.1 Where's the spec?

Right here (http://www.w3.org/TR/REC-xml). Includes the EBNF. There are also versions in Japanese (http://www.fxis.co.jp/DMS/sgml/xml/); Spanish (http://www.ucc.ie/xml/faq-es.html); Korean (http://xml.t2000.co.kr/faq/index.html) and a Java-ised annotated version at http://www.xml.com/axml/testaxml.htm.

Eve Maler maintains the DTD used for the spec itself; the DTD is also to encode several other W3C specifications, such as XLink, XPointer, DOM, XML Schema, etc. There is documentation available for the DTD. Note that the XML spec needs to use a special one-off version of the DTD, since the real original DTD used for it has long since been lost.

This FAQ is from The XML FAQ, maintained by Peter Flynn