<!doctype chapter system "remv.sect4.dtd">
<chapter><title>chapter title</title>
<para>
test para
</para>
<sect1><title>sect1</title>
<sect2><title>sect1</title>
<sect3><title>sect1</title>
<para>para</para>
</sect3>
</sect2>
</sect1>
</chapter>

