The /LISTING qualifier causes the compiler  to  create  a  source  listing
   file.

   The format of the /LISTING qualifier is as follows:

      /[NO]LISTING[=file-spec]

   To create a listing file with an explicit file specification, you must use
   the  /LISTING  qualifier in the form /LISTING = file-spec.  Otherwise, the
   listing file has the same name as its corresponding source file and a file
   type  of  .LIS.   All  other  file  specification attributes depend on the
   placement of the qualifier in the command.

   Note that the /LISTING qualifier only controls whether or not the compiler
   produces  a listing file.  The /SHOW qualifier controls which parts of the
   listing are produced.

   The default is /NOLISTING from a terminal, and /LISTING in batch mode.