[plt-scheme] results

If I say "hello" to drscheme or mzscheme, it says "hello" back to me,
and if I say (list 1 2 3), it says (1 2 3) back to me.  How do I make it
say hello in the first case (no quotes), and [1 2 3] in the second
without using display/write/print/printf?  Maybe even [1, 2, 3] for that
one.

-----------------------------------
Daniel Silva
dsilva at ccs.neu.edu