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 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].