There's no escape on my tablet. Also, the whole experience is horrible on tablet also wrt the other parts of navigation. Doesn't fit right on screen, navigates when trying to adjust, jumps around when trying to navigate. Hard to hit the arrows. I bailed out on this after three slides. Unusable.

I'd be interested to know how you know that. Did you just experiment? Others have said that "space" will take one through the slides in sequence. Is that genuinely discoverable? How does one know when hitting space that one has seen all the slides, and not just taken a single path through a subset.

These are genuine questions - I'm heavily into usability (in a different context) and I'd be interested to know what people try, and what they conclude. In my context people are uneasy about hitting keys and random just to see what happens. On some web sites I'm afraid to move the mouse, because the mouse-over event has been trapped, and things happen that I don't want, and can't undo.

So how did you discover that ESC will produce an overview?