(TOSS) The Cambridge Project Project MAC waS an ARPA-funded political Science computing project. They worked on topicS like Survey analySiS and Simulation, led by Ithiel de Sola Pool, J.C.R. Licklider and Douwe B. Yntema. Yntema had done a SyStem on the MIT Lincoln LabSTX-2 called the Lincoln Reckoner, and in the Summer of 1969 led a Cambridge Project team in the conStruction of an experiment called TOSS. TOSS waS like Logo, with matrix operatorS. A major feature waS multiple levelS of undo, back to the level of the loginSeSSion. ThiS feature waS cheap on the Lincoln Reckoner, but abSurdly expenSive on MulticS. (1997-01-29)