Symbol manipulation by threaded lists
Communications of the ACM
A Survey of Interactive Graphical Systems for Mathematics
ACM Computing Surveys (CSUR)
Representations for space planning
Communications of the ACM
An interactive software system for computer-aided design: an application to circuit project
Communications of the ACM
An interactive graphical display monitor in a batch-processing environment with remote entry
Communications of the ACM
Topographic information retrieval in neuropharmacology by using graphic display
ACM '69 Proceedings of the 1969 24th national conference
Data structures for computer graphics
ACM SIGPLAN Notices
Interactive graphics in data processing: principles of interactive systems
IBM Systems Journal
A multilevel data structure for complex hierarchies of interrelated objects
SIGFIDET '70 Proceedings of the 1970 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control
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As computing systems become more and more powerful, the tasks for which these systems are used become more and more sophisticated. In analyzing a complete task, one finds that there are certain portions which are best allocated to the computer and certain portions which are best allocated—at least at present—to man. Calculations and repetitive operations are done most efficiently by computer; intuitive functions and certain types of heuristic information are best handled by man. If man and the computer are to function together efficiently a device is needed to facilitate the communication of complex information between them. The sophisticated CRT display console is by far the best device available today for accomplishing this communication. To use the full capability of the graphic display console, both the computer and the man at the console must be able to create and manipulate drawings as well as alphanumeric information. If the computer is to do this, it needs an internal representation of the drawing information which provides not only the lines and points but also the information on how these are related to each other. The internal or computer representation of a drawing has come to be called the “model.”