GKS

Taylor, P. J. 1990. GKS. Political Geography Quarterly 9:211-212.
Unwin, T. 1992. The Place of Geography. Essex, England: Longman Scientific & Technical.

GKS is an ISO (International Standards Organization) standardized basic graphics package. It is capable of providing graphic output primitives like polylines, area fill, markers, etc.

See also: Database, GPS, GIS, GRASS, Image