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Three projects, each covering certain selected aspects of a potential information storage and retrieval system, were part of a study by the Ontario Educational Communications Authority (OECA) to explore various means for extending the usefulness of audiovisual materials. Project Dataset began the collection, classification, and cataloging of production and administrative data concerning each program within the OECA inventory; Project Operation Index began exploration of methods for in-depth content analysis of videotapes in close accord with specific teaching-learning requirements; and Project Access investigated the feasibility of an operational user-oriented on line computer information storage and retrieval system. The overall dimensions of the projects were examined and initial phases of data collection, experimentation, and testing were undertaken. This paper reports the work undertaken to date on the operation Index project. (JY)