SVC 23 (0A17)

CLOSE (TYPE=T) macro - is type 4, gets LOCAL lock.

Calls module IGC0002C.

GTF data is:
R15
No applicable data.
R0
Address of long-form parameter list if R1 contains zero. Otherwise, no applicable data.
R1
Address of the short-form parameter list or zero. Zero if "MODE=31" was specified in the CLOSE macro.
PLIST
Four to 40 bytes of the short-form CLOSE parameter list, which has a maximum length of 1020 bytes or 8 to 80 bytes of the long-form parameter list. The short-form list is a series of 4-byte entries in the following format:

The long-form parameter list is in the following format:

Bytes