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PRSCMA

       INTEGER FUNCTION  PRSCMA (STATUS, STDHMS, HLPSTR, LENHLP, DEFSTR,
      X     LENDEF)
 C$    (Parse - Comma)
 C$    Parse a comma.  The arguments are:
 C$
 C$    STATUS.........Parsing status  value (and  function  value)
 C$                   returned; one  of  NOPABT,  NOPCMA,  NOPHLP,
 C$                   NOPIFL, NOPNUL,  NOPUNK,  OKAY,  OVRFLO,  or
 C$                   REPARS.  The  help return,  NOPHLP, is  only
 C$                   given  if   an  alternative   parse  is   in
 C$                   progress.   Otherwise,  this  routine  loops
 C$                   until the  user  completes the  input  field
 C$                   with   something   other   than   the   help
 C$                   character.
 C$    STDHMS......... .TRUE. - issue standard help message.
 C$                   .FALSE. - suppress standard help message.
 C$    HLPSTR(*)......Packed Hollerith help string.
 C$    LENHLP.........Length of HLPSTR(*).
 C$    DEFSTR(*)......Packed Hollerith default value string.
 C$    LENDEF.........Length of DEFSTR(*).
 C$    (25-APR-84)