Re: Non-working Commodore PET 3016
PETSCII has a kind of version of alt. I found this out about 40 years ago when I was checking for a space on a screen as CHR(32) and couldn't find it, even though it was there as clear as anything. Turned out I had actually typed shift+space instead which looked like a space but was actually a different character number in PETSCII (160).
Colin.
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