Examines several aspects of communication methods ('vehicles') and the various types of progress that have been made over the years. Much of the progress we have made in communicating is rooted strongly in our past. Much of the future of our communication vehicles will be rooted in our present and our understanding of our present. In this paper, we focus our discussion on six aspects of communication: (1) communication vehicles for teaching and learning; (2) forums for communication-wide interchange of ideas; (3) vehicles for search-and-retrieval of information; (4) the richness of the communication media set; (5) venues of communication-where we communicate and the tools we use; and (6) the idea of linearity in communication.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

The evaluation purposes that can be served at various stages in the development of a document are analyzed. Three testing modes-exploring, verifying, and comparing-are discussed, and their use with various forms of evaluation and feedback modes is examined. The generalization of evaluation findings and the need to make evaluation an integral part of document development are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>