Contour line overlays may be drawn as either solid or dashed lines. The user may check the style they prefer. If dashed lines are chosen, SatView cycles through several different dash patterns in an attempt to make separate overlays more easily distinguishable. Note that dashed contours take considerably longer to draw than solid ones. If you change your line style from solid to dashed or vice versa, you need to choose Destroy Overlay from the toggle button menu. Bring the file up again and it will then reflect your line style change.