[W/K] :: ISWIM

  ISWIM
       
          If You See What I Mean.  Landin 1966.  ISWIM is purely
          functional, a sugaring of lambda-calculus, and the ancestor
          of most modern applicative languages.  An ISWIM program is a
          single expression qualified by 'where' clauses (auxiliary
          definitions including equations among variables), conditional
          expressions and function definitions.  ISWIM was the first
          language to use lazy evaluation and introduced the offside
          rule for indentation.
       
          ["The Next 700 Programming Languages", P.J. Landin, CACM
          9(3):157-166 (Mar 1966)].