Adobe After Effects CS5 Paint tools (keyboard shortcuts) keyboard shortcuts keys

Shortcut                                                                               Command
X	Swap paint background color and foreground colors
D	Set paint foreground color to black and background color to white
Alt-click	Set foreground color to the color currently under any paint tool pointer
Ctrl+Alt-click	Set foreground color to the average color of a 4-pixel x 4-pixel area under any paint tool pointer
Ctrl-drag	Set brush size for a paint tool
Ctrl-drag, then release Ctrl while dragging	Set brush hardness for a paint tool
Hold Shft while beginning stroke	Join current paint stroke to the previous stroke
Alt-click	Set starting sample point to point currently under Clone Stamp tool pointer
Ctrl+Shft	Momentarily activate Eraser tool with Last Stroke Only option
Alt+Shft-drag with Clone Stamp tool	Show and move overlay (change Offset value of aligned Clone Stamp tool or change Source Position value of unaligned Clone Stamp tool)
3, 4, 5, 6, or 7 on the main keyboard	Activate a specific Clone Stamp tool preset
Alt-click the button for the preset	Duplicate a Clone Stamp tool preset in Paint panel
Digit on numeric keypad (for example, 9=90%, 1=10%)*	Set opacity for a paint tool
. (decimal) on numeric keypad*	Set opacity for a paint tool to 100%
Shft+a digit on numeric keypad (for example, 9=90%, 1=10%)*	Set flow for a paint tool
Shft+. (decimal) on numeric keypad*	Set flow for a paint tool to 100%
Ctrl+Page Up or Ctrl+Page Down (or 1 or 2 on the main keyboard)	Move earlier or later by number of frames specified for stroke Duration