Yes, John's description is exactly right.

IIRC, Notator (the predecessor to Logic) supported correct enharmonic notation displays in the 1980's. It's really not a big ask for it to be added to BiaB / RB in 2016.

In my view, it really wouldn't be too difficult, as the program is already capable of displaying every possible note on a stave. It just needs an added flag to identify the places it should use the enharmonic equivalence.

It already supports Force Accidental. This is not really all that different. It just needs 'Force Enharmonic' added.

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