Page History

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	Mouse	Keyboard	Touch
Support focussing item without selecting it -> shows item details?	yes, on mouse over ->optionally, after a longer delay	yes, when shifting kbd focus ->yes, after short delay	no
Supports selecting single item without marking its checkbox ->show item details?	yes, on click ->yes, immediately	no	yes, on touch ->yes, immediately
Supports selecting single item by marking its checkbox ->show item details?	yes ->yes, immediately	yes, on hitting SPACE bar ->yes, immediately	yes ->yes, immediately
Supports selecting multiple items by marking their checkbox ->show item details?	yes ->yes, immediately	yes, on hitting SPACE bar on every item ->yes, immediately	yes ->yes, immediately

Supports executing an operation when selected by checkbox	yes	yes	yes
Supports executing an operation when selected, but not by checkbox	yes	no	yes

	Mouse	Keyboard	Touch
Focus an item	move mouse over it	move keyboard focus using arrow keys	(not supported)
Select an item	click it or tick its checkbox	move keyboard focus, then hit space	tap on it or tick its checkox
Open an item	double-click it	double-tap it	select it, then it Command/Ctrl-ENTER

Mockups

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