Actus <language> {Pascal} with parallel extensions, similar to the earlier {Glypnir}. It has parallel constants and {index sets}. Descendants include {Parallel Pascal}, {Vector C} and {CMU}'s language {PIE}. ["A Language for Array and Vector Processors," R.H. Perrott, ACM TOPLAS 1(2):177-195 (Oct 1979)]. (1994-11-08)