[O.B.Left]

O.B, HK is referring to putting when he says "Steeper than normal Elbow Plane".

Place the Grip in the cup of the Left Hand and adjust the right hand to correspond, then reach out with the arms to move the Right Elbow to the Steeper Plane. Then the Right Elbow, Right Forearm and Clubshaft are on the same Plane throughout the stroke. It's a "Straight Line Path" Elbow Plane. I'm sure that someone can make longer strokes and maybe use a Pivot Stoke too.

I agree with the zeroing out of #3 Angle in Basic motion but I dont think Homer is talking Basic Motion there in that sentence in 7-23....unusual as that procedure seems.

Chapter 7 deals with the 24 Basic Components, 7-23 deals with the Power Package Delivery Path, " From the Top". The sentence in question deals with Straight Line Path vs Angled Delivery Paths similar I believe to the photos in the similarly numbered 10-23. Straight Line relating to Zero Shift , Angled to Double or Triple. He goes on to discuss Longitudinal and Radial.

D, I may be wrong , its easy to do with this stuff but Id say your definition of the Elbow Plane and Higher Elbow plane in that drawing is consistent with the 1st Edition but not the 3 rd on. Take a look at this photo, is that an Elbow Plane or a TSP Dianne has here Right Forearm on?