xt)<br />
</pre><p>parse a schema definition resource and build an internal XML Shema struture which can be used to validate instances.</p>
<div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>ctxt</tt></i>:</span></td><td>a Relax-NG parser context</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the internal XML RelaxNG structure built from the resource or NULL in case of error</td></tr></tbody></table></div><h3><a name="xmlRela