[Yoda]

...Now, I think differently -- I only trace the true Geometric Plane Line (the 'Basic Basic').

...You say that 1-L-6 (this refers to the True Geometric Plane Line, not 10-5-E, yes?) is satisfied as long as the Clubhead covers the Angle of Approach. But since this covering occurs after Low Point also (because we cover the extensions of the Angle of Approach also), wouldn't that take the Clubhead above plane (once again, we are talking about the Basic Basic Plane, right?) hence violating 1-L-6?

1. With the On Line procedure (Arc of Approach), you Trace the true Geometric Plane Line (Basic Delivery Line) with the Sweetspot. With the Cross Line procedure (Angle of Approach), you Cover the Angle of Approach with the Sweetspot. With both procedures, you Trace the selected Line with the Right Forearm and #3 Pressure Point.

2.Yes, 1-L #6 (the On Plane Clubshaft) refers to the Geometric Plane Line. And yes, when using the Angle of Approach procedure, the linear nature of the Hitter's Right Triceps Thrust through Impact drives the Club above this Geometric Plane Line, i.e., into 'right field'. This 'off Geometric Plane' Drive-Out does, in fact, violate the true On Plane Clubshaft requirement of 1-L #6.

However, as long as (1) the Clubhead passes through the same two points (Impact Point and Low Point) located respectively on the Geometric and Low Point Plane Lines and (2) both the Clubshaft and Lag Pressure Point (as directed and supported by the Right Forearm) are correctly aligned (as established at Impact Fix) to this alternate Delivery Line (the Angle of Approach), then the geometrical equivalent of the On Plane Clubshaft has been achieved (2-N-0). And that is all that is required.