The REW command.                                  18-MAY-81
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             The REW command is used to rewind a magnetic tape during  a
        terminal session or batch job.  Its format is:

             REW ddnn:

          or

             REW ddnn:/OF

          where ddnn:  is the device specification of  the  magtape  you
        wish  to  rewind.   REW supports tape drives of types MM and MT.
        The first form of the command causes the tape to be  rewound  to
        beginning-of-tape  (BOT).   The  drive  will remain online.  The
        second form of the command turns the drive offline prior to  the
        rewind operation.  In this case the drive will have to be turned
        back online manually  before  any  further  operations  will  be
        allowed by the system.  The /OF switch may be specified as /OFF,
        /OFFLINE etc as desired.

             If another task is using the drive at the  time,  REW  will
        wait  until  the  task  detaches  it  before proceeding with the
        rewind operation.  You can only use  REW  for  a  tape  that  is
        allocated to your terminal.

             REW  can  produce  several  error  messages;    these   are
        generally self-explanatory and are not documented here.