Control scheme...
|   device	action
|   	mode	kb				gesture					button (tablet)		button (desktop)
	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 :