Library /sys$common/syshlp/helplib.hlb  —  HELP  /PROMPT
    /PROMPT (default)
    /NOPROMPT

   Controls whether HELP initiates  an  interactive  session  once  the
   initial  HELP request has been processed.  If you specify /NOPROMPT,
   HELP returns you to the  DCL  command  level  after  displaying  the
   requested information.

   If /PROMPT is in effect, one of four different prompts is displayed,
   requesting you to specify a particular HELP topic or subtopic.  Each
   prompt represents  a  different  level  in  the  hierarchy  of  HELP
   information.  The four prompt levels are:

   1.  Topic?---The root library is the main library and  you  are  not
       currently examining HELP for a particular topic.

   2.  [library-spec] Topic?---The root library is a library other than
       the  main library and you are not currently examining HELP for a
       particular topic.

   3.  [keyword] subtopic?---The root library is the main  library  and
       you  are currently examining HELP for a particular topic (and/or
       subtopic).

   4.  A combination of 2 and 3.

   When you encounter one of these prompts, you can enter  any  one  of
   the responses described below:

   Response            Action in the Current Prompt Environment

   keyword[...]        (1,2) Searches all  enabled  libraries  for  the
                       keyword.    (3,4)   Searches   additional   HELP
                       libraries  for   the   current   topic   (and/or
                       subtopic) for the keyword.

   @file-spec          (1,2) Same as above,  except  that  the  library
   keyword[...]        specified by @file-spec is now the  rootlibrary.
                       If  the  specified  library does not exist, HELP
                       treats @file-spec as a  normal  keyword.   (3,4)
                       Same  as  above,  treats  @file-spec as a normal
                       keyword.

   ?                   (1,2) Displays a list of topics available in the
                       root   library.   (3,4)  Displays  the  list  of
                       subtopics   of   the   current   topic   (and/or
                       subtopics) for which HELP exists.

   <RET>               (1) Exits from HELP.  (2) Changes  root  library
                       to  main  library.  (3,4) Prompts for a topic or
                       subtopic at the next higher level.

   <Ctrl/Z>            (1,2,3,4) Exits from HELP.
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