@Elizafox IME a CoC has been a document we can point to when someone is behaving in a way we consider unacceptable in our community... "change your behavior or leave".
A lot of recent calls have been made to make CoCs explicit in what is/isn't allowed and define enforcement paths. But it's hard to know what you'll run up against in advance and I have had "well the CoC didn't explicitly say this was bad so I'm fine!" experiences (no, it's still not ok). I'm not sure preciseness is best.