Abstract
Since its publication in 1985, the Graphical Kernel System (GKS) has become established as an important standard for computer graphics. Both its output and input models are superior to earlier 2D systems, and its coordinate systems are flexible and device-independent. GKS uses different concepts to previous graphics packages, and includes a number of innovative features, including how the values of aspects are determined and the model of input. The impact of GKS on existing applications programs and programmer practice is addressed, and problems with reprogramming existing applications to run using GKS are also described. Implementation of GKS is reviewed from the viewpoint of purchasing a GKS implementation and the different implementation philosophies. The issues of conformity testing and registration of graphical items are discussed.
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