{{define fib  (lambda (n) (if (< n 2) n (+ (fib (- n 1)) (fib (- n 2)))))}}

The first values of Fibonacci function:
{{for-each (lambda(x) (printf "| ~5f | ~5f |\n" x (fib x))) 
           '(0 1 2 3 4 5 6 7 8 9 10)}}
