Creative Logic, based in the Brunel Science Park, Uxbridge has appointed Scientific Computers Ltd, based in Burgess Hill, West Sussex to distribute the Leonardo expert systems development tool throughout Western Europe: Leonardo uses forward or backward chaining artificial intelligence techniques and multiple inferencing to create front or back end applications, and enables the user to establish a set of rules that may be extended, without reprogramming, to include descriptions of objects; Leonardo runs on Sun, Apollo and DEC workstations and MS-DOS micros; prices range from UKP2,000, going up to UKP12,000.