Help map where post-2002 development occurred by locating it on the map at left. Areas covered by yellow, orange or red polygons denote areas already developed and known. Find an unshaded building on the map. Choose the best land use category from the list below and then click on the center of the building.
Click in the left pane to place points. Placement of point in the right pane might not be exact. Undo: Left click on one of your recent points to remove it from the map. There's only a short window for undoing points, so try and make every point an accurate one.