Point to point lines in XY graphs that skip over data points

Prism lets you choose to connect XY points with lines. This figure shows four ways to draw these lines. The bottom choice is one you probably want to avoid. That graph uses open symbols with clear (transparent) fill so the point-to-point lines will be visible going through (or under) the points. You want to use white (or whatever the background color is) fill color which covers up the point-to-point lines.  Prism file.