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
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   
0line width 0 for selected objects
1line width 1 for selected objects
2line width 2 for selected objects
3line width 3 for selected objects
4line width 4 for selected objects