/SHOW[=(keyword[,...])])
     /SHOW=(SOURCE,TERMINAL) (D)

   Use /SHOW together with /LIST to control the information included
   in the listing file.  You can specify the following keywords:

   ALL                        Include all information.

   BRIEF                      Include a summary of the symbol table.

   [NO]CHARACTER_DEFINITIONS  Include/omit the charmap file.

   NONE                       Do not print any information.  If NONE
                              is specified, the listing file only
                              contains the error messages generated.

   [NO]SOURCE                 Include/omit a listing of the source
                              file.

   [NO]STATISTICS             Include/omit compiler performance
                              information.

   [NO]SYMBOLS                Include/omit a listing of the charmap
                              symbol table.

   [NO]TERMINAL               Display compiler messages at the
                              terminal.