Subparameter definition

nnnnnM
nnnnnG
nnnnnT
nnnnnP: Specifies a value to be used as the limit on the total size of usable virtual storage above the bar in a single address space. The value may be expressed in megabytes (M), gigabytes (G), terabytes (T), or petabytes (P). nnnnn may be a value from 0 to 99999, with a maximum value of 16384P.
NOLIMIT: Specifies that there is no limit on the virtual pages to be used above the bar.
Note: Unlike the REGION parameter, MEMLIMIT=0M (or equivalent in G, T, or P) means that the step can not use virtual storage above the bar.