.... There are 31 states, the District of Columbia and the Territory of Hawaii that have laws in effect that authorize planning in cities, towns, boroughs, counties and regions.2 These laws are grouped in two classes, those that may be termed general enabling acts, as they authorize planning in all cities, or cities of a certain class, towns, boroughs, villages, counties or regions, of the state; and those that may be called special acts in that they affect only certain named cities or areas.....