I would love if this had an option to switch left-right images for those of us who have an easier time with "focus-beyond-the-screen" 3D rather than cross-eyed.
^This. I'd rather not have to flip my screen upside-down, thank you very much.
Fortunately the transitions between slides allow you to get a good sense of the 3D.
But I don't see any instructions whatsoever.