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

  Additional Information (explode) :

• Example