Perhaps it's a generational issue, but back in the day (before electric fans, air conditioners, etc.), people had to resort to fanning themselves on hot summer days. Try this: hold a stiff piece of paper, or a notebook-sized piece of cardboard, in your right hand and use it to blow air onto your face. It seems to work best if your wrist stays (slightly) bent as your forearm moves back and forth, and your hand consistently returns to the same positions at the top and bottom of the stroke.
I believe that's the "fanning" that Mr. Kelley was referring to, and obviously if you fan going back you have to fan coming down - to keep the air moving!
I do not think so TGMfan. It is the shape of a motion. Like the opening of an peacock's tail or asian hand fan that "fans" open. It is a tracing of the plane line. Like clapping the hands back and forth. The forearm fans open and closed as it traces the plane line.
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