How OPS/REXX Programs in the AOF Work

In the AOF environment, the OPS/REXX interpreter does the following:

Compiles an AOF rule when it is enabled if no precompiled version of that rule exists. While compiling a rule, the interpreter reads the rule source code from the rule data set library on disk and places the code in internal CA OPS/MVS storage. The interpreter does the same for any external subroutines that are called directly or indirectly.
Runs the )INIT section of a rule when a rule is being enabled.
Runs the )TERM section of a rule when a rule is being disabled.
Runs the )PROC section of a rule when an event matching the event type specified for the rule occurs.

All other uses of OPS/REXX require you to invoke the OPS/REXX interpreter explicitly.