Adobe After Effects CS5 General (keyboard shortcuts) keyboard shortcuts keys

Shortcut                                                                                 Command
Ctrl+A	Select all
F2 or Ctrl+Shft+A	Deselect all
Enter on main keyboard	Rename selected layer, composition, folder, effect, group, or mask
Enter on numeric keypad	Open selected layer, composition, or footage item
Ctrl+Alt+Down Arrow or Ctrl+Alt+Up Arrow	Move selected layers, masks, effects, or render items down (back) or up (forward) in stacking order
Ctrl+Alt+Shft+Down Arrow or Ctrl+Alt+Shft+Up Arrow	Move selected layers, masks, effects, or render items to bottom (back) or top (front) of stacking order
Shft+Down Arrow	Extend selection to next item in Project panel, Render Queue panel, or Effect Controls panel
Shft+Up Arrow	Extend selection to previous item in Project panel, Render Queue panel, or Effect Controls panel
Ctrl+D	Duplicate selected layers, masks, effects, text selectors, animators, puppet meshes, shapes, render items, output modules, or compositions
Ctrl+Q	Quit
Ctrl+Z	Undo
Ctrl+Shft+Z	Redo
Ctrl+Alt+/ (on numeric keypad)	Purge all
Esc	Interrupt running a script