Paint Node Keyboard Shortcuts

Front (F1)
Matte (F3)
Source Front (F1 F1)
Source Matte (F3 F3)
Result (F4)
Output Matte (F4 F4)
Hide Strokes (H)
Overlay button (Tab)
Toggle cursor's crosshair (Alt+H)
Toggle cursor's circle (Alt+C)
Toggle Edit box (Alt+E)
Offset reference image(Ctrl+Shift and drag)
Increase the brush size (S and drag right)
Decrease the brush size (S and drag left)
Rotate Canvas (Alt and drag)
Select brush preset 1 to 10 (1 to 0 respectively)
Colour (Ctrl+1)
Clone (Ctrl+2)
Recursive Clone (Ctrl+3)
Reveal (Ctrl+4)
Eraser (Ctrl+5)
Wash (Ctrl+6)
Shade (Ctrl+7)
Blur (Ctrl+8)
Smear (Ctrl+9)
Drag (Ctrl+0)
Impressionist (Ctrl+-)