Paint Node Keyboard Shortcuts

Front (F1)
Matte (F3)
Source Front (F1 F1)
Source Matte (F3 F3)
Result (F4)
Output Matte (F4 F4)

Add a source node (Ctrl-click the Add button)

Hide Strokes (H)

Clone and Recursive Clone selection (Ctrl-click)

Overlay button (Tab)

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+spacebar and drag)

Paint (Q)

Clone (W)

Reveal (E)

Blur (R)

Smear (T)

Recur Clone (Y)