SingleLeftMiddleRight 
Plain: SelectJoint SelectSegment ExtendSelect
Shift: CaretPos AddLine AddBox
Ctrl: Drag Rotate Scale
Ctrl-Shift: DeselectJoint DeselectSegment (ExtendDesel) 
DoubleLeft Middle Right 
Plain: SelectTopLevl SelectTraj SelectWithBox
Shift: NoOp AddLine NoOp
Ctrl:  CopyAndDrag NoOp Skew
Ctrl-Shift:  DeseleTopLevl DeselectTraj NoOp
MetaLeftMiddleRight 
Plain: ExtSelJoint ExtSelSegment ExtendSelect
Meta DoubleLeft Middle Right 
Plain: ExtSelTopLevl ExtSelTraj SelectWithBox
Keyboard Ctrl Ctrl-Shift Shift 
A: Drop Anchor Lift Anchor
B: ToggleShowColors NoOp
C: Close NoOp
D: SelectAll NoOp
G: GravityForwardGravityBackward
H: AddHoles NoOp
J: AddJoint NoOp
P: AddControlPoint DeleteControlPoint
Q: ToggleAlignments KillAlignments
S: MakeHot MakeCold 
DoubleS: MakeAllHot MakeAllCold 
W: Weld Weld
BS DeleteCaretSeg DeleteCaretSeg DeleteCaretSeg
SP ToggleGravity ToggleGravity ToggleGravity
DEL Delete Selected Objects
ESC Interpress Snapshot
CR Close (same as ^C)
Look   
x IN [0..9]line width x for selected objects
Acurve style ARC for selected objects
Bcurve style B—SPLINE for selected objects
Ccurve style CONIC for selected objects
Lcurve style LINE for selected objects
Ncurve style NATURAL SPLINE for selected objects
Zcurve style BEZIER for selected objects