The split25 geoprocessing operation is used to divide an input layer into two or
more layers based on a split layer (part (g) of Figure 7.11 "Vector Overlay Methods
"). The split layer must be a polygon, while the input layers can be point, line, or
polygon. For example, a homeowner’s association may choose to split up a
countywide soil series map by parcel boundaries so each homeowner has a specific
soil map for their own parcel.