org.eclipse.help/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>

   <extension-point id="contentExtension" name="%content_extension_point_name" schema="schema/contentExtension.exsd"/>
   <extension-point id="contentProducer" name="%content_producer_extension_point_name" schema="schema/contentProducer.exsd"/>
   <extension-point id="contexts" name="%contexts_extension_point_name" schema="schema/contexts.exsd"/>
   <extension-point id="index" name="%index_extension_point_name" schema="schema/index.exsd"/>
   <extension-point id="toc" name="%toc_extension_point_name" schema="schema/toc.exsd"/>

   <extension
         point="org.eclipse.help.contentExtension">
      <contentExtensionProvider class="org.eclipse.help.internal.extension.ContentExtensionFileProvider"/>
   </extension>

   <extension
         point="org.eclipse.help.contexts">
      <contextProvider class="org.eclipse.help.internal.context.ContextFileProvider"/>
   </extension>

   <extension
         point="org.eclipse.help.index">
      <indexProvider class="org.eclipse.help.internal.index.IndexFileProvider"/>
   </extension>
   
   <extension
         point="org.eclipse.help.toc">
      <tocProvider class="org.eclipse.help.internal.toc.TocFileProvider"/>
   </extension>
   
</plugin>