What about decoding each of the areas both ways and test the amount of entropy in each instance?

Neither, it will be as if you pressed all those keys in the list above, which will most of the time do nothing

Not exclusively but almost exclusively since 2004 here, the time when there was a thing similar to wine for printer drivers

His argument is that he can’t read notes, so people who can read notes shouldn’t

That wouldn’t solve the problem

83 is 123 in base 8