Level 1 HTML DTD
This document type declaration refers to the HTML DTD with the "HTML.Forms" entity defined as "IGNORE" rather than "INCLUDE." Documents that contain <FORM> elements do not conform to this DTD, and must use the level 2 DTD.
<!-- html-1.dtd Document Type Definition for the HyperText Markup Language with Level 1 Extensions (HTML Level 1 DTD). $Id: html-1.dtd,v 1.2 1995/03/29 18:53:10 connolly Exp $ Author: Daniel W. Connolly <connolly@w3.org> See Also: http://info.cern.ch/hypertext/WWW/MarkUp/MarkUp.html --> <!ENTITY % HTML.Version "-//IETF//DTD HTML 2.0 Level 1//EN" -- Typical usage: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML Level 1//EN"> <html> ... </html> -- > <!-- Feature Test Entities --> <!ENTITY % HTML.Forms "IGNORE"> <!ENTITY % html PUBLIC "-//IETF//DTD HTML 2.0//EN"> %html;