The ConceptBase Graph Editor is an advanced graphical modelling tool that supports the browsing and editing of Telos models. As the graphical browser of the previous releases, it supports different graphical types, i.e.\ different object types may be represented by different graphical objects. In addition to some predefined graphical types, the user can add his/her own graphical types by modifying and adding certain objects in the knowledge base. Furthermore, the standard components can be replaced by own classes implementing specific application-dependent behaviour.
In the following, we first give an overview of the Graph Editor application and then present the main components and functions of the Graph Editor. Details about the use of graphical types can be found in Appendix B. An example for the definition of graphical types of the Entity-Relationship model is given in Appendix C.2.