The Boundary | Edit Boundaries | Reverse Direction command reverses the order of the vertices in the selected areas. This converts islands to lakes and lakes to islands by reversing the order of the vertices. The vertices on islands are oriented clockwise and vertices for lakes are oriented counterclockwise. The direction of the areas are listed as CCW (counterclockwise) and CW (clockwise) in the Polygon Direction column in the Property Manager Info page.
Complex areas will have all component polygons reversed. To reverse a single polygon of a complex area, first use Split Islands/Lakes, reverse the desired areas, and then use Combine Islands/Lakes.
See also