The concept of a graphical type enables the specification of an external graphical presentation for ConceptBase objects. The graphical type is declared using a special pre-defined attribute category. An application program then uses this information to determine the graphical presentation of an object.
The next subsection introduces the basic concepts behind
graphical types, while section 
presents the
standard graphical type definitions for the ConceptBase Graph
Browser. Section describes the definition
of application-specific types.