Arthur A. Gleckler scripsit:

> Since this isn't standardized, you'll have better luck checking the
> documentation of your specific Scheme implementation.

What I finally figured out is that this means "Can anyone tell me how
to implement this feature without access to main()"?

--
They do not preach                              John Cowan
  that their God will rouse them                cowan@ccil.org
    A little before the nuts work loose.        http://www.ccil.org/~cowan
They do not teach
  that His Pity allows them                         --Rudyard Kipling,
    to drop their job when they damn-well choose.   "The Sons of Martha"