Control scheme...
|   device	action
|   	mode	kb				gesture
	tablet / phone
		single
		ribbon
			focus image
				--				tap/click
			left image
				left			swipe right
			right image
				right			swipe left
			up image
				up				-- (via focus)
			down image
				down			-- (via focus)
			first image
				home			--
			last image
				end				--

			shift up
				s-up			swipe up
			shift down
				s-down			swipe down
			shift up, new ribbon
			shift down, new ribbon

			drag view
				??				tap-drag

			zoom in
				+				pinch spread
			zoom out
				-				pinch closeup
			fit one
				1				??
			fit three
				3				??
			broad view
				??				??

			toggle single image mode
				??				??
			toggle slideshow mode
				??				??
	desktop
		
.
| vim:set spell :