---
title: "A Tablet Input Facility for an Interactive Graphics System"
authors:
  - "James E. Curry"
doi: ""
url: "https://ijcai.org/proceedings/1969/4"
pdf: "https://ijcai.org/proceedings/1969/0004.pdf"
venue: "Proceedings of the First International Joint Conference on Artificial Intelligence"
year: 1969
pages: "33-40"
track: "Man-machine Symbiosis in Problem Solving"
keywords:
---

# A Tablet Input Facility for an Interactive Graphics System

James E. Curry

*Proceedings of the First International Joint Conference on Artificial Intelligence*, pages 33-40.

## Abstract

Effective man-machine communication in an interactive graphics environment requires a natural and convenient way for the on-line user to input information and issue commands to the computer . Several applications have been described in which such an interface has been achieved by allowing the user to draw symbols on a tablet. In order to make this mode of interaction generally available to users of the TX-2 graphics facility,4 we have augmented the TX-2 graphics programming language LEAP 6 with constructs for handling tablet input and interfacing with a user-trainable symbol recognizer. These extensions to LEAP have made the incorporation of a flexible input technique into a graphics application program as straightforward for the programmer as typewriter input. Experimentation with the man-machine interface has thereby been greatly simplified , resulting in the faster development of useful graphics applications . This paper illustrates an application which uses the symbol recognition facility, and describes the language extensions through which the interactive aspects of such an application a re implemented