<a name="Brief_I/O">Brief_I/O</a></h4>
<PRE>
   VARIABLE  I/O  DESCRIPTION
   --------  ---  --------------------------------------------------
   module     I   The name of the calling routine.
</PRE>
<h4><a name="Detailed_Input">Detailed_Input</a></h4>
<PRE>
   module         is the name of the routine calling <b>chkout_c</b>.  The
                  named routine is supposed to be `checking out'
                  when it calls <b>chkout_c</b>; that is, the call should be
                  the last executa