Invokes the HELP Facility to display information  about  a  DEBUG
     command or topic.  In response to the "Topic?" prompt, you can:

      o  Type the name of the command or  topic  for  which  you  need
         help.

      o  Type a question mark  (?)  to  redisplay  the  most  recently
         requested text.

      o  Press the RETURN key one or more times or the CTRL/Z  key  to
         exit from HELP.

     You  can  abbreviate   any   topic   name,   although   ambiguous
     abbreviations result in all matches being displayed.

     Format:
          HELP [topic ...]

Additional information available:

Parameters

 topic ...

     Specifies the name of the command or feature with which you  need
     help.   In  general,  you can get help on a command by specifying
     the command after "HELP".  For example, to get help  on  "EXAMINE
     /SOURCE",  specify "HELP EXAMINE /SOURCE".  There is also help on
     general features (for example, "HELP Screen_features").

     If you use an asterisk in place of any  topic  or  subtopic,  the
     HELP command displays all information available at the level that
     the asterisk replaces.  For example, "HELP SET BREAK *"  displays
     all the subtopics under the topic "SET BREAK".

     If you use an ellipsis immediately after any topic, HELP displays
     all  the  information on the specified topic and all subtopics of
     that topic.  For example, "HELP SHOW..." displays information  on
     the  "SHOW"  topic  as  well  as information on all the subtopics
     under "SHOW".