Context-sensitive help plug-ins can be supplied as dedicated plug-ins, which
           point to related help topics that are contributed by other, online documentation
           plug-ins, but do not contribute any help topics themselves.
        
        
        Dedicated context-sensitive help plug-ins can “mirror” the architecture of the
           online documentation plug-ins. For each plug-in that contributes topics related
           to help contexts, a corresponding context-sensitive help plug-in can be
           delivered. In that case, the context-sensitive help plug-in should be named to
           match its corresponding online documentation plug-in. For example:
            
                - Online documentation plug-in: org.eclipse.datatools.doc.user
- Context-sensitive help plug-in: org.eclipse.datatools.doc.user.contexts