> (rep)
>> (if 3 4 5)
|(eval-expression
   (if-exp (lit-exp 3) (lit-exp 4) (lit-exp 5))
   (halt-cont)
   (((a b) . #2(3 4))))
|(eval-expression
   (lit-exp 3)
   (if-cont (lit-exp 4) (lit-exp 5) (halt-cont) (((a b) . #2(3 4))))
   (((a b) . #2(3 4))))
|(apply-cont
   (if-cont (lit-exp 4) (lit-exp 5) (halt-cont) (((a b) . #2(3 4))))
   3)
|(eval-expression (lit-exp 4) (halt-cont) (((a b) . #2(3 4))))
|(apply-cont (halt-cont) 4)
4
|#<void>
#<void>
>>