New mask

Ctrl+Shift+N

Command+Shift+N

Select all points in a mask

Alt-click mask

Option-click mask

Select next or previous mask

Alt+` (grave accent) or Alt+Shift+` (grave accent)

Option+` (grave accent) or Option+Shift+` (grave accent)

Enter free-transform mask editing mode

Double-click mask with Selection tool or select mask in Timeline panel and press Ctrl+T

Double-click mask with Selection tool or select mask in Timeline panel and press Command+T

Exit free-transform mask editing mode

Esc

Esc

Scale around center point in Free Transform mode

Ctrl-drag

Command-drag

Move selected path points 1 pixel at current magnification

arrow key

arrow key

Move selected path points 10 pixels at current magnification

Shift+arrow key

Shift+arrow key

Toggle between smooth and corner points

Ctrl+Alt-click point

Command+Option-click point

Redraw handles

Ctrl+Alt-drag point

Command+Option-drag point

Invert selected mask

Ctrl+Shift+I

Command+Shift+I

Open Mask Feather dialog box for selected mask

Ctrl+Shift+F

Command+Shift+F

Open Mask Shape dialog box for selected mask

Ctrl+Shift+M

Command+Shift+M