Presents a conceptual overview of online information systems, emphasizing the distinction between hypertext (associative) and more traditional (search) models of information management. Five commercially available hypertext systems are reviewed, hypertext design issues are discussed, and the application of structured writing techniques to…

Discusses the emerging need of users for bulk numerical, graphic, and textual information, and describes a range of tools available for information reduction and restructuring, and the conversion of data into information. Some of the tools described include graphics databases, hypertext applications, and search systems that utilize relationships,…

Review of the literature on international computerized indexing systems for visual materials also describes technologies available for reproducing images, highlighting videotex, videodisk, and digital storage. Advances in the ability to interface these technologies with each other and with online retrieval systems are discussed. (76 notes with…

Focuses on the multiple design issues involved in creating successful menu selection systems: semantic organization, response time, display rates, shortcuts for frequent users, titles, phrasing of menu items, graphic layout, and selection mechanisms. Pop-up and embedded menus, experimental results, and design guidelines are also covered.…

This special feature focuses on recent developments in optical disk technology. Nine articles discuss current trends, large scale image processing, data structures for optical disks, the use of computer simulators to create optical disks, videodisk use in training, interactive audio video systems, impacts on federal information policy, and…