If needed, Type the 7 character name(s) of Prior USERMODs to supersede (SUP).
There are four optional fields for the 7 character name(s) of a previous USERMOD(s) to be superseded by this SMP/E USERMOD. The previous USERMODs (up to four) are included in the SUP operand of the SMP/E USERMOD. The four fields must be filled from left to right.