[Yoda]

Not quite what I was looking for [B](edit)[/b] your response as I read it and understand it is that you have identified three separate and distinct lines..the first part was

1. Is the Line of Flight and Flight Line the same line, not two lines where one is superimposed over the other?

2. If they are the same line, just labeled differently, are they the Target Line as well, again only one line now with three different labels?

What I was under the impression that all three terms refer to the same single line and if you your stance is open to the Target Line, you could also say it is open to the Flight Line or Line of Flight. There is no exception, they are always just one line that has three different labels or terms.

You are right, Martee. The three terms refer to the same straight line to the Target. However, the Target Line can be differentiated from the Flight Line/Line of Flight in perspective.

Target Line refers to the straight Line ("straightaway direction of Aim") from the Ball to the Target, and the label emphasizes the ultimate destination. The terms Flight Line and Line of Flight likewise refer to the straight line from the Ball to the Target. However, these labels emphasize the normally-intended straight line Ball Flight.

The Plane Line -- the Base Line of the Inclined Plane -- intersects the Target Line (or, if you will, the Flight Line) as either Square, Open or Closed. Flight Path refers to the total Ball Behavior (including the curve produced by any divergence of the Plane Line and Target Line/Flight Line) on the way to the Target.

The Stance Line intersects the Plane Line as Square, Open or Closed, but has no effect on the direction of the Plane Line (and any divergence with the Target Line). Hence, it has no effect on the Flight Path (total Ball Behavior). Instead, the Stance affects only the Pivot, i.e., Open Stance (restricted Backstroke and free Follow-Through) versus Closed Stance (free Backstroke and restricted Follow-Through).