(1)     
   .-LIST=-+-121-+-----.   
   |       '-YES-'     |   
>>-+-------------------+---------------------------------------><
   '-LIST--=--+-133-+--'   
              +-MAX-+      
              '-NO--'      

1. For z/OS and CMS, the default is 121, for z/VSE the default is YES.

121 (z/OS and CMS only)

The Source and Object section of the assembler listing is produced in the 121-character wide format.

133 (z/OS and CMS Only)

The Source and Object section of the assembler listing is produced in the 133-character wide format.

MAX (z/OS and CMS only)

The Source and Object section of the assembler listing is produced in:

121-character wide format

if the logical record length (LRECL) of the listing data set is less than 133.

133-character wide format

if the LRECL of the listing data set is 133 or more.

YES

same as 121.

NO

no assembler listing is produced. If LIST=NO is specified, the options DXREF, ESD, MAP, MXREF, PCONTROL, PRTEXIT, RLD, and XREF are ignored.

Defaults

z/OS and CMS

LIST=121

z/VSE

LIST=YES