R6 Integrator

I've created an Action to execute a host program from within Integrator.
I'd like to be able to pop up a message to the user once the action has
completed (i.e. - the host program has finished running). I'm thinking
I could use the same program that MAPICS uses when displaying
informational message like the one shown below. Anyone have any idea
what program is called to display "system" messages like this and what
parameters are used?



Thanks...










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