Thanks, Thorsten, for your rapid response to my question.  As a follow up,
perhaps I could ask another question: do the post/pre commands do anything
presently on the Mac version?  For instance, could they launch a script via
applescript?  I am just trying to explore other ways of signaling another
applescript that a rendering job is complete so that I can start another
job.  This can probably all be done in applescript but having POV-Ray
signal when it was done seemed the easiest and most direct approach.
Thanks again, Chris

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