Copyright 1994 Rich Hickey

Permission to use, copy, modify, distribute and sell this software
for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear in supporting documentation. 

Rich Hickey makes no representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied warranty.

 - Source is modified