plugins/org.eclipse.objectteams.otdt.doc/plugin.xml

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



<!-- OTDT help extension-->      
   <extension point="org.eclipse.help.toc">
     <toc file="guide/toc.xml" primary="true"/>
   </extension>

</plugin>