Layer Transparencies and Selections

Load Layer Transparency as a Selection

Mac: Cmd + click layer

Win: Ctrl + click layer

Add Layer Transparency to a Selection

Mac: Cmd + Shift + click layer

Win: Ctrl + Shift + click layer

Subtract Layer Transparency from a Selection

Mac: Cmd + Option + click layer

Win: Ctrl + Alt + click layer

Intersect Layer Transparency with a Selection

Mac: Cmd + Option + Shift + click layer

Win: Ctrl + Alt + Shift + click layer