<language> A 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
["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].