This program is distributed WITHOUT ANY WARRANTY, express or implied.

Copyright (C) 1991, 1992 Hans-Hermann Bode

Permission is granted to make and distribute verbatim copies of this document provided that the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this document under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.