Do this again: Extend your Left Arm straight in front of yourself, parallel to the ground with fingers extended, you will end up looking like 4-C-1. Now keeping your Left Wrist Vertical and your Left Arm parallel to the ground, swing the whole of your Left Arm about six inches to your right (just like a door). Without changing anything from this position, drop your Left Arm into a golf-like like position. Important: Note how your Left Wrist seems to be slightly Turned! In fact, it's perfectly Vertical! It's Vertical to the Horizontal Plane.
Tong Mr.K would be proud! Another stellar post! Moving the hands on the Horizontal Plane the dropping down to the Inclined Plane . . . Hello Dual Horizontal Hinge Motion.