The May 1977 cover shows Helikos, a plexiglas sculpture by James Ver Hague, a professor in Rochester, New York, with a double exposure of it on the back. Kenneth C. Knowlton of Bell Laboratories describes a console whose pushbuttons are relabeled by a computer display optically superimposed on them, so that it can be used alternately as a typewriter, computer terminal, text editor, telephone operator’s console or computer-assisted instruction terminal.