## BSD Code

The program `sccs`, its source code, and its accompanying documentation are covered by the following license:-

> Copyright (C) 1998, 1999
> Free Software Foundation, Inc. All rights reserved.

> Copyright (c) 1980, 1993
> The Regents of the University of California. All rights reserved.

> Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

> 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
> 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
> 3. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

> THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The original version of the copyright notice above dates from 1993, as you can see. However, since that time a change has been made to the BSD license by UCB itself. This change is described on the following letter, which is available on the BSD FTP site in the file `README.Impt.License.Change` :-

> July 22, 1999

> To All Licensees, Distributors of Any Version of BSD:

> As you know, certain of the Berkeley Software Distribution (“BSD”) source code files require that further distributions of products containing all or portions of the software, acknowledge within their advertising materials that such products contain software developed by UC Berkeley and its contributors.

> Specifically, the provision reads:

>     " * 3. All advertising materials mentioning features or use of this software
>       *    must display the following acknowledgement:
>       *    This product includes software developed by the University of
>       *    California, Berkeley and its contributors."

> Effective immediately, licensees and distributors are no longer required to include the acknowledgement within advertising materials. Accordingly, the foregoing paragraph of those BSD Unix files containing it is hereby deleted in its entirety.

> William Hoskins
> Director, Office of Technology Licensing
> University of California, Berkeley

This change has been made to the file `COPYING.bsd` which accompanies the BSD-derived code.