/usr/share/sgml/html/dtd/html-3s.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 | <!--
html3s.dtd
Document Type Definition for the HyperText Markup Language (HTML DTD)
with strict validation.
-->
<!ENTITY % HTML.Version
"-//W3O//DTD W3 HTML Strict 3.0//EN//"
-- Typical usage:
<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML Strict 3.0//EN//">
<html>
...
</html>
--
>
<!ENTITY % HTML.Recommended "INCLUDE">
<!ENTITY % html PUBLIC "-//W3O//DTD W3 HTML 3.0//EN//">
%html;
|