3049	 A Simply Extended and Modified Batch Environment Graphical System SEMBEGS	 SEMBEGS is a complete batch environment graphical system containing components for handling graphical data files for displaying the contents of these files on a variety of graphical hardware and for performing graphical batch input operations. SEMBEGS is easy to extend and modify to meet the growing needs of a large batch environment and is even extendable to a fully interactive system. The paper presents the conceptual view of graphics leading to the design of SEMBEGS and outlines the major components of the system. The design of SEMBEGS is founded upon the basic assumption that the true aim of computer graphics is to describe graphical entities rather than as commonly held to provide graphical input and output functional capabilities. SEMBEGS is built around a Basic Graphical Data Management System BAGDAMS which provides a common means of communicating the descriptions of graphical entities between the various components of SEMBEGS. BAGDAMS provides facilities for storing retrieving and manipulating the descriptions of graphical entities provided by and received by application programs graphics packages and graphical devices. Computer graphics data structures graphic display graphic input graphical database device independent graphics
