<!DOCTYPE variablelist PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<variablelist><title>Font Filename Extensions</title>
<varlistentry><term><filename>TTF</filename></term>
<listitem>
<para>
TrueType fonts.
</para>
</listitem>
</varlistentry>
<varlistentry><term><filename>PFA</filename></term>
              <term><filename>PFB</filename></term>
<listitem>
<para>
PostScript fonts.  <filename>PFA</filename> files are common on 
<acronym>UNIX</acronym> systems, <filename>PFB</filename> files
are more common on Windows systems.
</para>
</listitem>
</varlistentry>
</variablelist>