Keys for using the Channels palette (Photoshop)

Result	Windows	Mac OS
Set options for Save Selection as Channel button	Alt-click button	Option-click button
Create a new spot channel	Control-click Create New Channel button	Command-click Create New Channel button
Select/deselect multiple color-channel selection	Shift-click color channel	Shift-click color channel
Select/deselect alpha channel and show/hide as a rubylith overlay	Shift-click alpha channel	Shift-click alpha channel
Display channel options	Double-click alpha or spot channel thumbnail	Double-click alpha or spot channel thumbnail
Display composite	~ (tilde)	~ (tilde)