Modules and their functions

Does anyone have a list of Modules and what they do? For Epicor 9 which we
are installing they changed module names and such and we are unsure of the
ones we need. We have bought a whole lot of them in the past... Don't ask
why but we don't need them all so we only want to enable the ones we
need/use if anyone has such a list of knows of a place that has it I would
apreciate it.
Jose C Gomez

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