/usr/share/sgml/html/dtd/html-1.dtd is in sgml-data 2.0.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | <!-- html-1.dtd
Document Type Definition for the HyperText Markup Language
with Level 1 Extensions (HTML Level 1 DTD).
$Id: html-1.dtd,v 1.1 2001/03/11 06:00:54 apharris 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;
|