You can add shapes to the map to designate points, lines, areas, or collections of objects.
these objects are also called overlays. Overlays are tied to latitude/longitude coordinates,
so they move when you drag or zoom the map.
The number of overlays you can add to your map depends on your pricing plan.
When you add, edit or delete overlays from the map always remember to click the save button if you want them to stick next time you load the map.