The Unload  a Device  command provides  a simple function  to ensure  a
device  is  unloaded for  a  *TAP device  (virtual  or real).    If the
command  completes successfully  and unloads  the device  or the device
is  not in  a  ready  status  (the status  if  already  unloaded),  the
command  completes   normally.    Different   completion  message  text
describes  the  condition.   The command  may  be helpful  when several
save commands are used  in a CL  program and it  is not known what  the
device condition is at the end.

The tape must be initialized.

A typical command would be:

             UNLOAD

The device defaults to TAP01.

UNLOAD escape messages you can monitor for
------------------------------------------

None.  Escape messages from based on functions will be re-sent.

UNLOAD Command parameters                             *CMD
-------------------------

   DEV           The device name.  The default is TAP01.


Restrictions
------------

Only *TAP devices (virtual or real) are supported.

The tape must be initialized.

Prerequisites
-------------

The following TAA Tools must be on your system:

     SNDCOMPMSG      Send completion message
     SNDESCINF       Send escape information

Implementation
--------------

None, the tool is ready to use.

Objects used by the tool
------------------------

   Object        Type    Attribute      Src member    Src file
   ------        ----    ---------      ----------    ----------

   UNLOAD        *CMD                   TAATAPU       QATTCMD
   TAATAPUC      *PGM       CLP         TAATAPUC      QATTCL