OK, some time ago I change a few keyboard shortcuts in Safari so ⌘` changes tabs, ⇧⌘` changes windows, and ⌘D selects the address bar. The problem is, I DON'T REMEMBER HOW I CHANGE IT! I checked the Keyboard Shortcuts in System Preferences, there's nothing for Safari.
As far as I know, I would have used System Preferences, but there's nothing there, now.
Is there some other way to change these that I might have forgotten about? I think I'm losing my mind...