.-WORKFILE=NO--.   
>>-+--------------+--------------------------------------------><
   '-WORKFILE=YES-'   

YES

the assembler will attempt to open the workfile dataset, and if successfully opened, then the workfile will be used as a spill file if required.

NO

the assembler does not attempt to open the workfile dataset. Sufficient storage must be specified via the SIZE option to avoid abnormal terminations.

Default

WORKFILE=NO