SHOWCB AREA=LENGTH, x
FIELDS=EXLLEN, x
LENGTH=4
L 0,LENGTH Amount of storage for GETMAIN.
GETMAIN R,LV=(0)
LR 2,1 Address of storage for GENCB.
GENCB BLK=EXLST, Indirect notation for length of return x
LENGTH=(*, area. x
LENGTH), x
. WAREA=(2)
.
LENGTH DS F Contains the length of GENCB's return x
area.
The GENCB macro specifies a return area in which an exit list is to be generated. The length of the return area is located at LENGTH, where the maximum length of an exit list was put as a result of the SHOWCB macro.