This document type declaration refers to the HTML DTD with the `HTML.Forms' entity defined as `IGNORE' rather than `INCLUDE'. Documents which 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: 95.htm,v 1.1.1.1 1998/09/05 02:18:12 baccala 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;