[mgjordan]

Yoda,

My question had nothing to do with Hinge Action. Just your #4 in and of itself, and as it relates to the term "Swivel". Your #4 describes the Turning and Rolling Wrist Actions defined in 4-C-2 and 4-C-3. However, you say that this action is "Swivel Action". Your definition of "Swivel Action" is the same as Homer's definition of Turning and Rolling.

MJ,
A swivel IS a rotation. Hold your left hand out in front of you with your palm down. Roll it to palm up. This is a swivel. It is a rotation of the forarm, wrist, and hand. Hinge action is the hand staying VERTICAL to the plane it is hinging on. There is no rotation...the hand stays vertical.