Tools
BPen / Brush
EEraser
VSelect
ZZoom (click to zoom in, Shift+click to zoom out)
GFill tool
Drawing
Shift + dragStraight lines / circles
Alt + dragForce circle mode
Selection
CtrlASelect all
Shift + clickAdd to selection
DeleteDelete selected
EscDeselect
Edit
CtrlZUndo
CtrlShiftZRedo
CtrlCCopy frame
CtrlVPaste frame
Playback
SpacePlay / Stop
EscStop playback
,Previous frame
.Next frame
NNew frame
View
OToggle onion skin
ZZoom tool