usage example:</p>

 <code>
 &lt;xmlcatalog&gt;<br>
 &nbsp;&nbsp;&lt;dtd publicId="" location="/path/to/file.jar" /&gt;<br>
 &nbsp;&nbsp;&lt;dtd publicId="" location="/path/to/file2.jar" /&gt;<br>
 &nbsp;&nbsp;&lt;entity publicId="" location="/path/to/file3.jar" /&gt;<br>
 &nbsp;&nbsp;&lt;entity publicId="" location="/path/to/file4.jar" /&gt;<br>
 &nbsp;&nbsp;&lt;catalogpath&gt;<br>
 &nbsp;&nbsp;&nbsp;&nbsp;&lt;pathelement location="/etc/sgml/catalog"/&gt;<br>
 &nbsp;&nbsp;&lt;/catalogpath&gt;<br>
 &nbsp;&n