Using Districts, Bands and Overlays

1. Use DISTRICTS when you want to define new areas that are perfect combinations of other, already defined areas.

2. Use BANDS when you want to outline a new area that is defined by its distance to an existing point, line or area feature.

3. Use OVERLAYS when you want to estimate the attributes of areas whose boundaries don't coincide with the boundaries of other regions. Overlays can be used with bands or with area layers you create or edit by hand.