Q:

If you have two functions -- both with the same name -- defined in two units, how do you distinguish which is which? For example, let's say you have an unit called Unit1 and it has a function called functionA. You have another unit, called Unit2, and it's got a function called functionA which performs a different function than the functionA in Unit1.
A:
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To access functionA in Unit1 type:

Unit1.functionA;

and to access functionA in Unit2 type:

Unit2.functionA;