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Your boss is right... ILE doesn't provide
> anything you couldn't do before
with program calls.

I respectfully disagree. Activation groups provide override scope isolation that is virtually impossible to emulate with program calls.

There is a temptation to think of single programs is isolation from the rest of the application, but no program is an island. Sure, you could sort of emulate functions/procedures via program calls, but that's ignoring the runtime, which is a very large part of the Integrated Language Environment. Activation groups allow much more complex application designs than OPM does.
--buck

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