PARM(...)

Data to be sent to the subtask by an internal message. The default is no data.

PGM(........)

(Required.) Program name. This is the name of the program to be attached.

RETRY(...)

The number of times a subtask is to be restarted after completing with a nonzero completion code. The default is 0.

tid

(Required.) Task ID. Can be one to four characters that must be unique to the CTS address space.