# Advancing slides with Mathematica on a Mac laptop

I am giving my first presentation with Mathematica, and am having trouble figuring out how to advance the slides from my laptop keyboard. In most other environments, some pair of the arrow keys works. I have tried the alt-PageDn combination, but no luck.

I am running Mavericks on a 2014 MacBook Pro. Is there any way to re-assign key combinations? I hate relying on the top toolbar to advance slides. Related to this, is there any way to re-position the slide tool bar to the bottom of the slides?

Thanks!

I haven't worked out a way to bind the StartPresentation command to a shortcut, but this question seems like it might have some good suggestions.