The term Target Line always refers to the Flight Line, the straightaway direction of Aim. The term Flight Path refers to the total ball behavior (including any curve) on its way to the Target (7-3). The Target Line is dictated by circumstance and is immoveable.
Stance Line and Plane Line are moveable and can be aligned (in relation to the fixed Target Line) to produce any one of the nine Plane Line - Stance Line Combinations (three Stance Lines to each of the three Plane Lines per 10-5-0). The Plane Line - Stance Line Combination selected will reflect the player's Basic Stroke Pattern or its Variation, psychological preference, the intended Ball Behavior (Flight Path) or all three.
As a special note to those who have gone nuts trying to crack the code of CCW and CW in 10-5-0, the terms mean Counter Clockwise and Clockwise.
Thanks Yoda for elaborating that Stance Line and Plane Line are always classified in relation to Target Line.
When I referred to Target Line being "moveable", I really meant that people ought to look at 10-5 and know that the target line is not really pointing way right or way left of their target but at the target.
That was hard to get for me initially - what is not stated in the book was that Mr. Kelley's garage was so tiny that he had to take certain shots from a "misleading" angle".