ALGOL WA derivative of {ALGOL 60}. It introduced {double precision}, {complex numbers}, bit strings and dynamic data structures. It is parsed entirely by {operator precedence} and used the {call-by-value-result} calling convention. ["A Contribution to the Development of Algol", N. Wirth, CACM 9(6):413-431, June 1966]. ["ALGOL W Implementation", H. Bauer et al, TR CS98, Stanford U, 1968]. (1994-11-24)