The hand control points (or at the wrists):
leftArmPoint or
leftHandPoint
rightArmPoint or
rightHandPoint
The elbow control points:
leftElbowPoint
rightElbowPoint
The shoulder control points:
leftOverarmPoint
leftOverArmPoint
leftShoulderPoint
neckPoint
rightOverarmPoint
rightOverArmPoint
rightShoulderPoint
neckPoint
Use "neckPoint" if building a Stickman figure.