(Named after the brightest star in Hydra) A Pascal-like language developed by Wulf, shaw and London of CMU in 1974. Alphard supportsdata abstraction using the ' form' , which combines a specification and an implementation. ["Abstraction and Verification in Alphard: Defining and specifying Iteration and Generators", Mary shaw, CACM 20(8):553-563, Aug 1977]. (1995-05-10)