Adjacent arc-node segments may be combined to form polygons, and thus the full map area. Address matching A mechanism for relating two files using address as the key item. Geographic coordinates and attributes can subsequently be transferred from one address to another. Annotation Text on a drawing or map associated with displayed graphic entities. A topological organization of graphic elements used by some GISs.
Arcs represent lines that can define linear features or the boundary of areas or polygons.
There is an implied direction to the line since a left and right hand side is identified. Areas bounded by such arcs can be described and shared boundaries need NOT be duplicated. Aspect A position on a sloped surface facing a particular direction. Usually referred to in compass directions such as degrees or as cardinal directions. Attribute A distinctive feature of an object.