mentations.<DT><B>Throws:</B><DD><CODE><A HREF="../../../../org/apache/xerces/xni/XNIException.html">XNIException</A></CODE> - Thrown by handler to signal an error.</DL>
</DD>
</DL>
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<A NAME="startExternalSubset(org.apache.xerces.xni.XMLResourceIdentifier, org.apache.xerces.xni.Augmentations)"><!-- --></A><H3>
startExternalSubset</H3>
<PRE>
public void <B>startExternalSubset</B>(<A HREF="../../../../org/apache/xerces/xni/XMLResourceIdentifier.html">XMLResourceIdentifier</A>&nbsp;identifier,
           