[racket] Scribble question

Hi there,
If in a scribble document I want to have scheme code pretty printed and
evaluated I could do like this:

@interaction[
(define (f x)
   (+ 3 x))

(print (f 4))
   ]

What would I do if I would like to have scheme code just pretty printed
but not evaluated? so that I could have something like this 

(somefunc a b 2)

without getting a complaint that somefunc isn'd defined.





-- 
Thanks,
Manfred