Difference of Polygons

Select all of the polygons to use for calculating the difference. Click the Draw | Edit Boundaries | Difference of Polygons command or click the button. The overlapping section of the selected polygons are removed. A single new polygon is created that contains the shape of the areas that do not contain overlapping portions of the original polygons.

Note, if the selected polygons do not contain any overlapping sections, no change is made after selecting the command.

These two areas are selected. After the Difference of Polygons command

is selected, two new areas are created without the intersecting

area. Note that the area's fill was changed for emphasis.