| Abstract: | To explain his abstract model of Communicating Sequential Processes, Hoare includes an implementation of the concepts being expounded as a set of LISP functions. However, the final sections are only described sketchily. This paper completes the missing details, and briefly discusses experience with the system. The usefulness of the implementation is enhanced by the addition of features to ensure that incomplete program fragments can be executed, and that no restrictions are placed on the way operators may be combined. |
