The RelView-System is an interactive tool for computer-supported manipulation of relations represented as Boolean matrices or directed graphs, especially for prototyping relational specifications and programs. It is developed at the Department of Computer Science and Applied Mathematics of Christian-Albrechts-University of Kiel. WWW: http://www.informatik.uni-kiel.de/~progsys/relview.shtml - Michael Ebert ebert@informatik.unibw-muenchen.de