>From what I have (mis)read, branching instructions for these cannot always
address 'distant' locations. If this is the case, then when exactly does a
Call, Goto, or Return/Retfie require special handling, and how would I know
I've not done this when I should have?

Moreover, how do I handle these special cases?

FWIW, I don't use the MPLAB environment, just a text editor for my ASM
files if that matters. MPLAB seems flakey to me - it's locked up and
otherwise crashed on numerous computers during various operations, so I
quit using it.

Thanks.