ZOG is a rapid response, large network, menu selection system used for man-
machine communication. The philosophy behind this style: of communication w
as first developed by the PROMIS (Problem Oriented Medical Information Syst
em) Laboratory of the University of Vermont. ZOG has been used in a number
of task domains to help explore the limits and potential benefits of the co
mmunication philosophy. This paper discusses the basic ideas in ZOG, descri
bes the architecture of a system implemented to carry out that exploration,
and discusses our initial experience.