One simple but genius detail about the Atari ST's case design is that the case screws on the bottom have square holes while other screws have round holes. You d

One simple but genius detail about the Atari ST's case design is that the case screws on the bottom have square holes while other screws have round holes. You don't have to learn beforehand which screws are which, or risk loosening things inside that you didn't intend to.