PL/I Features You Cannot Use

You cannot use the following PL/I features in programs running under CA IDMS/DC:

Any statement associated with file management: OPEN, CLOSE, DELETE, LOCATE, RELEASE, UNLOCK
I/O statements: GET, READ, WRITE, REWRITE
Any special feature that could generate a supervisor call (SVC): DATE, FETCH, DISPLAY, DELAY, WAIT, HALT, EVENT, COMPLETION, TIME, ATTN, ONCOUNT, ONKEY, ONFILE, ONSYSLOG
The compile option: FLOW
SPIE and STAE options (the DC/UCF system detects all runtime errors.

Using these features inhibits system performance and can cause the DC/UCF system to abend.