[Etzwane]

2-J-3 does not make it totally clear, but I think it mixes Arc of Approach and Angle of Approach as visual equivalent to on-plane motion with the delivery procedures that gives a cross-line Hit for the Angle of Approach delivery (off plane past low point). The latter is naturally associated (2-J-3) to 10-5-E Closed plane line but 12-1-0 specify 10-5-A Square-Square and would be using the former "Angle of Approach equivalent to on plane motion". These are the two hitting procedures I recall from discussions here.