PS Menu Item Value Description RES MEMORY FREE*
SAVE Specifies whether or not the printer saves PostScript
information (downloaded fonts, macros, patterns) when it
switches from PostScript to another data stream:
v  FREE—the printer does not save data and frees the     memory.
v  SAVE—the printer saves data. Note:  Changing the RES MEMORY item causes the printer
to restart. Therefore, IBM recommends you wait until no
jobs are queued before you change this item. Chapter 6. Operator Panel Menus 91