And in later versions of Classic Mac OS, for each executable, metadata was stored on whether to set the hardware for 32-bit or 24-bit addressing. As a kid, I d

And in later versions of Classic Mac OS, for each executable, metadata was stored on whether to set the hardware for 32-bit or 24-bit addressing. As a kid, I definitely monkeyed with the checkbox there not understanding what it did. Having seen no change in behavior, I guess all the applications I used were 32-bit clean.