Draw
Left Click / Touch
Pan / Move Canvas
Space + Drag / Middle Click / 2 fingers
Zoom
Mouse Wheel / Pinch to zoom
Pen Tool
B or P
Eraser Tool
E
Hand (Pan) Tool
H
Paste Screenshot / Image
Ctrl + V
Undo
Ctrl + Z
Redo
Ctrl + Y / Ctrl + Shift + Z
Reset Zoom to 100%
0
Fit Drawing to View
Shift + 1
Toggle UI Panels
F