r#"Copyright (C) 1990 by the Massachusetts Institute of Technology

Export of this software from the United States of America may  require a specific license from the United States Government.  It is the responsibility of any person or organization contemplating  export to obtain such a license before exporting.

WITHIN THAT CONSTRAINT, permission to use, copy, modify, and  distribute this software and its documentation for any purpose and  without fee is hereby granted, provided that the above copyright  notice appear in all copies and that both that copyright notice and  this permission notice appear in supporting documentation, and that  the name of M.I.T. not be used in advertising or publicity pertaining  to distribution of the software without specific, written prior  permission. M.I.T. makes no representations about the suitability of  this software for any purpose. It is provided "as is" without express  or implied warranty.
"#