This may be a doofus question. Per Shogun Master Mr. Kelley's glossary . . .
FLAT AND VERTICAL FLAT LEFT WRIST Example Left hand Karate Chop.
Mechanical The Paddlewheel blade relationships as vertical to its axis of rotation and vertical to its plane of rotation.
Golf Positioning the Left Wrist to be vertical to its Left Shoulder Axis and to its Associated Plane during Impact.
He's saying here that the Karate Chop is executed with the left palm not facing the plane, but perpendicular to the plane . . . Right?
Now if I could just figure out how to tip toe across that rice paper without leaving foot prints. . .