The positive axis point, or PAP, is the one point on the ball that is equidistant from every point of the ball’s track. Put another way, look at the ring of oil around the ball. There’s one spot on the entire ball that is exactly the same distance from every piece of that oil ring.
To better understand what the positive axis point is and how to find it, watch the video Understanding You as a Bowler | Bowling Ball P.A.P.: