nst <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * SystemID)<br />
</pre><p>Callback on external subset declaration.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctx</tt></i>:</span></td><td>the user data (XML parser context)</td></tr><tr><td><span class="term"><i><tt>name</tt></i>:</span></td><td>the root element name</td></tr><tr><td><span class="term"><i><tt>ExternalID</tt></i>:</span></td><td>the external ID</td></tr><tr><td><span cl