Ken wrote

But what if NavEventUPP has already  been #DEFINEd as a PROC in
another header, doesn't that create a potential conflict?
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Ken,

I'm speaking of the conversion of new headers (not yet existing in 
FB-form) and I should like to tell others how to proceed. (This is 
just a continuation of a thread that had been started a while ago.)

The situation with existing FB-headers is far from idaeal:
Many of them contain errors or contain definitions that may work but 
don't comply with Apple's definitions.

Changing or better, correcting, existing headers makes sense if you 
put the better ones in the "User Libraries Folder".
But be aware that you will encounter problems with your existing 
programs and that's why it is so important to start with correct 
header-conversions.

Best
-- 


                   Herbie

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