tion"><a href="extractor.html#concepts.extractor.concept_requirements">Concept Requirements</a></span></dt>
<dt><span class="section"><a href="extractor.html#concepts.extractor.notes">Notes</a></span></dt>
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<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="concepts.extractor.introduction"></a><a class="link" href="extractor.html#concepts.extractor.introduction" title="Introduction">Introduction</a>
</h3></div></div></div>
<p>
          An Extractor is a class whic