Miscellaneous

Keyboard shortcut
Function
EE
Create a particle emitter.
CommandShiftMCommand-Shift-M
Import an image mask to the selected object.
ArrowUpUp Arrow
Select the next object above.
ArrowDownDown Arrow
Select the next object below.
Press Command and the Up Arrow, Down Arrow, Left Arrow, or Right Arrow key.
Nudge the selected object(s) one pixel.
Press Shift-Command and the Up Arrow, Down Arrow, Left Arrow, or Right Arrow key.
Nudge the selected object(s) 10 pixels.
Press Shift and drag in the Canvas.
Add/Remove selected objects using the region box.
Press Command and click an object or objects.
Select multiple objects in a group or layer.
Press Shift and click an object.
Add to selection.