[erlang-questions] where does output go in detached mode

[Joe Armstrong]

Hello,

 I start erlang with

    $ erl -detached

and have two questions:

1) If program does io:format(Format, Data) where does the output go?

Does the output just vanish, or do I have to unclog some buffers eventually?

2) Can I attach to the process later?

    And if so does this work on the three major platforms OS-X, linux and
    windows?

Cheers

/Joe