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Provides the ability to add participants to help search and is responsible
for creating search indices.
<h2>Package Specification</h2>
<p>This package contains the API for adding content to the help search functionality
and is responsible for indexing all contents of the help system. To add content, a
plug-in must extend the <tt>SearchParticipant</tt> abstract class and point to it
using the <tt>org.eclipse.help.search.searchParticipant</tt> extension point.</p>
<p>The package also provides an abstract class that extends <tt>LuceneSearchParticipant</tt>
called <tt>SearchParticipantXML</tt> which adds functionality for parsing XML
documents.</p>

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