Illustrate the GKS system

The user communicates with the graphic system via his program. The GKS system is embedded in the user program by an application-oriented layer and a language independent layer, whereby each layer calls upon the functions of the adjacent lower layer. The following services are available to the user : 

• methods for the abstract definition of the peripherals which are needed for a CAD session;
• definition of basic graphic elements, polynomials, text and so on;
• performance of graphic operations such as transformation, rotations, picture segmentation, editing and so on;
• generation of a neutral picture file (meta-file) for the system independent storage of data, the exchange of data between different CAD systems and the organization of the output of graphic data;
• definition of a segment file for storing picture segments during a CAD session;
• input and output of graphic information.