Diagnostics for FZFILE

CALL FZFILE (LUN,LREC,options)

#ZFATAL>ZFATAL termination

Messages printed via ZFATAM:

       FZFILE - no dynamic store initialized.

          if MZSTOR has not been called at least once before
          the first call to FZFILE.

       FZFILE - File already open.

          if FZFILE has already been called for this unit without
          it having been closed by one of the FZEND routines
          with the T option.

       FZFILE - LUN invalid.

          if LUN does not contain a small positive integer.

       FZFILE - Requested format not available.

          if the format is not available, either not at all or
          not on the particular Zebra library used.

       FZFILE - L mode and IQUEST(1)=0 on call.

          normally this means that CFOPEN failed to open
          the file for reading in C library mode.