Comparing Resources With Repository Versions
  To compare Workbench resources with those in the repository:
  
    - Select a resource in one of the navigation views.
- From the resource's pop-up menu, select one of the following menu items:
      
        - Compare With > Latest From <Branch Name> or <Version>- Compare the
        Workbench resource with the latest resources currently committed to the branch that the local project is shared
        with or if the local project is checked out as a version then compare against the version. A compare editor
        will be opened. This editor will display a tree of all resource differences between the workspace resource and
        the latest resources in the repository.
- Compare With > Another Branch or Version - Compare the Workbench resource with a specific version
        or branch that you select in the repository. A compare editor will be opened. The editor will display a tree of
        all resource differences between the workspace resource and the resources in the specified version or
        branch.
- Compare With > History... - (available only on a file) Compare the Workbench file with another
        revision of the file. Based on your preference settings, either the History view or a dialog will open. The
        History view (or dialog) will contain a table of all available revisions of the selected file. Selecting one of
        the revisions will show the differences between the workspace revision and the selected revision.
 
Tip: When comparing with a branch or version, you can specify a particular date instead of a version or
  branch tag. This can be done by right clicking on the Dates category in the tag selection list and
  choosing Add Date. A Date Tag dialog is displayed that allows you to specify a date and optionally a
  time. After you click Ok, the date tag will appear in the tag selection list.
  Three way comparisons
  Synchronizing with the repository
  Setting preferences for comparing files
  
  Compare editor