Copyright notice from "printf.scm":

   ;;;; "printf.scm" Implementation of standard C functions for Scheme
   ;;; Copyright (C) 1991-1993, 1996, 1999-2001 Aubrey Jaffer and Radey Shouman.
   ;
   ;Permission to copy this software, to modify it, to redistribute it,
   ;to distribute modified versions, and to use it for any purpose is
   ;granted, subject to the following restrictions and understandings.
   ;
   ;1.  Any copy made of this software must include this copyright notice
   ;in full.
   ;
   ;2.  I have made no warranty or representation that the operation of
   ;this software will be error-free, and I am under no obligation to
   ;provide any services, by way of maintenance, update, or otherwise.
   ;
   ;3.  In conjunction with products arising from the use of this
   ;material, there shall be no use of my name in any advertising,
   ;promotional, or sales literature without prior written consent in
   ;each case.

Copyright notice from "genwrite.scm":

   ;;"genwrite.scm" generic write used by pretty-print and truncated-print.
   ;; Copyright (c) 1991, Marc Feeley
   ;; Author: Marc Feeley (feeley@iro.umontreal.ca)
   ;; Distribution restrictions: none
