bsp;&lt;catalogfiles dir="/opt/catalogs/" includes="**\catalog.xml" /&gt;<br>
 &lt;/xmlcatalog&gt;<br>
 </code>
 <p>
 Tasks wishing to use <code>&lt;xmlcatalog&gt;</code> must provide a method called
 <code>createXMLCatalog</code> which returns an instance of
 <code>XMLCatalog</code>. Nested DTD and entity definitions are handled by
 the XMLCatalog object and must be labeled <code>dtd</code> and
 <code>entity</code> respectively.</p>

 <p>The following is a description of the resolution algorithm:
 entities