Invokes an interactive help session, which describes the the
    Edit/FDL utility commands and the File Definition Language.
    Information is available on the following commands and
    definitions:

    Abstract  ADD    DELETE EXIT   HELP   INVOKE
    Operation MODIFY QUIT   SET    VIEW

    To exit help and return to the main level menu, press the Return
    key in response to the "Topic?" prompt.

    Format

      HELP

1  –  Example

  Main Editor Function     (Keyword)[Help] : HELP

           Information available:

           Abstract   Add    Delete   Exit   Help   Invoke   Modify
           Operation  Quit   Set      View

           Topic?

      This command allows you to request information about the Edit
      /FDL utility while you are editing your FDL file. It displays a
      menu of the various topics about which you can request help.