Achievements and promises, Sleeman; knowledge representation and logic programming, Barbuti, Martelli and Simi; language understanding by computer - developments on the theoretical side, Bunt; characterizing machine learning programs - a European compilation, Kodratoff; a perspective on machine vision, Nagel; protoKEW - a knowledge based system for knowledge acquisition, Reichgelt and Shadbolt; POPLOG's two-level virtual machine support for interactive languages, Smith, Sloman and Gibson; applications of expert systems technology to medicine, Stefanelli.