Describes an automatic display system which has been developed for the editing of concept subnetworks within a relational index and which employs only a floppy diskette drive and a PET 2001 microcomputer. Appendices on Farradane's Nine Relations and on the Graphic Editing System Commands and a reference list are included. (Author/JL)

Describes a microcomputer-based multimedia system that enables videotape presentations to be created by assembling still or moving data, with sound and in color, from a variety of sources. Source media include Macintosh storage of text and graphics, and various types of videotape and disc players. (18 references) (CLB)

Describes an information retrieval system developed at Bell Laboratories to create and maintain a variety of different but interrelated databases, and to provide controlled access to these databases. The components discussed include the interfaces, indexing rules, display languages, response time, and updating procedures of the system. (6 notes…

Describes videotex development; discusses optimal internal organization, visual display, and presentation of information on videotex screen; addresses policy issues of equity, privacy, and costs that affect instructional use of videotex; outlines videotex field trials and experiments within education; and draws conclusions on significance of…