Not a shortcut exactly, but turn on the "zoom" accessibility feature bound to something like CMD. You can then zoom in anywhere on the screen by holding the sho

Not a shortcut exactly, but turn on the "zoom" accessibility feature bound to something like CMD. You can then zoom in anywhere on the screen by holding the shortcut and doing a two finger gesture. Useful for reading small text, checking some CSS rendering close up and to point out a feature on the screen to someone nearby.