[MizunoJoe]

"Tell me you understand that the 'Roll' of Horizontal Hinging -- with the Flat Left Wrist remaining perpendicular to the ground (horizontal plane) -- is not a Swivel. "

I understand that. And also from 2-G, "There is the "Release Roll" (Swivel) which is a true rotation of the Hands into Impact alignment by Accumulator #3 (with 10-18-A only)." And, after Separation, a Swivel may be used to Roll the hands into an On Plane Condition.