Project INTREX. Semiannual Activity Report, 15 September 1968 to 15 March 1969.

After three years of preparation, the Project Intrex research team has begun to subject parts of its augmented catalog system to interactions with users who were interested in the substance of the stored information and uncontaminated by prior association with the Intrex research effort. The experiences with users to date, as well as progress made on the engineering side, are presented in this report. All the elements of the Intrex System have been completed, all are working individually, and with the exception of the display-console-typewriter, magnetic-drum link, all have been interconnected and made to work as a complete system. Since the first user experiments were conducted before completion of the display console and since full-text material cannot be requested presently from an IBM 2741 typewriter terminal, the kind used in the experiments, only catalog information could be extracted by the initial group of users. Nevertheless, the experiments have contributed substantially to a preliminary understanding of system performance and user behavior. (Author/JB)