(define (displayn EXP)
   (begin
      (display EXP)
      (newline)))

(displayn (list 1 2 3 4))

(displayn (length (list 1 2 3)))

(displayn (length '(1 2 3)))

(displayn (list-tail '(1 2 3) 1))

(displayn (append '(1 2) '(3 4) '(5 6)))

(displayn (list-ref '(1 2 3 4 5) 3))

(filter odd? '(1 2 3 4 5 6))

(filter even? '(1 2 3 4 5 6))

(fold-right (lambda (a b) (+ (* 2 a) b))
   0
   '(1 2 3 4 5))


(displayn
   (map odd? '(1 2 3 4 5)))


Add test-code for composite ("prefix") builtins
Add test-code for composite ("prefix") builtins
