Adobe After Effects CS3 Working with masks keyboard shortcuts keys

Shortcut                                                                                                Command
Cmnd+Shft+N	New mask
Optn-click mask	Select all points in a mask
Optn+` (grave accent) or Optn+Shft+` (grave accent)	Select next or previous mask
Double-click mask with Selection tool or select mask in Timeline panel and press Cmnd+T	Enter free-transform mask editing mode
Esc	Exit free-transform mask editing mode
Cmnd-drag	Scale around center point in Free Transformmode
arrow key	Move selected path points 1 pixel at currentmagnification
Shft+arrow key	Move selected path points 10 pixels at currentmagnification
Cmnd+Optn-click point	Toggle between smooth and corner points
Cmnd+Optn-drag point	Redraw handles
Cmnd+Shft+I	Invert selected mask
Cmnd+Shft+F	Open Mask Feather dialog box for selectedmask
Cmnd+Shft+M	Open Mask Shape dialog box for selectedmask