Press the right key for the next slide (or swipe left)

also ...

Press the left key to go backwards (or swipe right)

Press n to toggle whether notes are shown (no equivalent if you don't have a keyboard)

Press m or double tap to see a menu of slides

 

Proof Example: ¬∀x Dead(x) ⊢ ∃x¬ Dead(x).

13.49--13.50