[tongzilla]

Before we go further...

12-1 and 12-2 technically refer to 10-13-A, or Standard. A combination of 10-13-B and 10-13-D. So...at the top, you would have 10-13-B per 12-1 and 12-2.

Yes! That is why I said emphasised the word Downstroke in my last post! In fact, the photo in 10-13-D #2 is suppose to illustrate the same point as the one in 10-13-B #2, in the sense that they both represent a 10-13-B backstroke shoulder turn (even though 10-13-D #2 can also represent a 10-13-C backstroke shoulder turn, but it doesn't. Hope that doesn't confuse anyone!)

Secondly...the arrow indeed is to indicate the right shoulder is on plane at the follow through - and though the pictures are to represent only that specific component, its easy to see that Diane has Zero #3 accumulator.

There is Accumulator #3 in the photo of 10-13-D #3! This is because the Right Forearm is On Plane (and as long as the grip is in the cup of the right hand, regardless of wrist condition) and by definition the Left Arm cannot be On Plane at the same time.