InhaltsangabeNice drawings of graphs are computationally hard.- Beyond visualization: Knowing and understanding.- Generating pictorial presentations for advice-giving dialog systems.- What does knowledge look like?.- Representing semantic knowledge with 2-dimensional rules in the domain of functional programming.- A graphical representation of the prolog programmer's knowledge.- Fast - A stepper in an object-oriented programming environment.- Integrating visual aids into an object oriented programming environment.- A context-oriented approach for decision support.- Beyond the desk top metaphor: Information retrieval with an icon-based interface.- Visualization and direct manipulation in user interfaces: Are we overdoing it?.- Teaching a spreadsheet application - visual-spatial metaphors in relation to spatial ability, and the effect on mental models.- Some HCI issues concerned with displaying quantitative information graphically.- Implementing direct manipulation query languages using an adequate data model.- Modelling the relationship between state and display in interactive systems.- A software engineering environment for developing human-computer interfaces.- "Intrinsic geometry in LOGO- distance of linear segments".