This paper, presented at a symposium on computer-based instructional systems, discusses innovations in the TICCIT computer-based instructional system. Specific issues addressed include innovations in the system's authoring languages, integration of videodisc technology, instructional management systems, creation of color computer graphics using a digitizing camera, and two-dimensional simulations of instrument panels. Additional topics include a discussion of educational and psychological research that has influenced design and use of the system and planned developments in the system in the next 2 to 3 years. (Author)