In the previous example, it is obvious where the issues are in the existing design. Most of the time the design parameters are a lot more complicated. When other magnets are added, sensors and any ferromagnetic materials, the simple lobe boundaries that have been mapped are altered dramatically. The mapping then takes on an entirely new look where boundary definitions may be filled with subtle twists and turns in the pull-in and drop-out boundaries. So the mapping clearly provides pull-in and drop-out fields. They allow the designer to properly position the magnet/s and reed sensor/s in their ideal positions. Thus providing the designer a solidified design before finalizing all design constraints.