Existing interfaces to large-scale hypermedia such as the world wide web have poor conceptual models and poor rendering of navigational and contextual information. New technologies that make it cheaper to use three-dimensional representations suggest the use of richer conceptual models. We discuss criteria for assessing more powerful conceptual models and design decisions that have to be made to exploit richer interfaces. The Treeworld model is suggested as one attractive example of such a model.

conceptual model, navigation, world wide web, large-scale hypermedia, 3-d glasses, search, relevance structuring, hierarchy, focus + context, visualisation, teleportation, Treeworld