Explains search commands for SERIDU, an online bibliographic search system developed at Brussels Free University. These commands and output formats are compared with Euronet commands (from which they were derived), with existing INFODOC storage system commands, and with the planned BIDULE system commands. An evaluation of SERIDU is included. (SW)

Describes the development and use of Mediatron, a multimedia teaching aid, to teach principles of on-line searching, basic command languages, data base structure, and specialized search techniques. An exact replica of a search is displayed on a VDU, accompanied by a voice commentary and visual slide images displayed on a screen. (CWM)

This update covers the approximate time period from mid-1980 through late 1981, contains 640 references, and includes books, state of the art reviews, program descriptions, use studies, periodical articles, and the proceedings of four conferences on information retrieval. (Author/JL)