Presents a framework for the design of information representations in terms of previews and overviews, to aid designers of digital library interfaces. Defines previews and overviews, as graphic or textual representations of information abstracted from primary information objects, analogous to bibliographic records and catalogs; and describes four…

Questionnaires, observation, and taped interviews of 36 graduate students were used to compare and evaluate the use of a continuous zooming graphical interface and a typical jump-based hypertext interface, with a focus on minimizing user disorientation when reading documents. Learning time, performance and user satisfaction were evaluated. (AEF)