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BSD Protection License
February 2002

Preamble
--------

The Berkeley Software Distribution ("BSD") license has proven very effective
over the years at allowing for a wide spread of work throughout both
commercial and non-commercial products.  For programmers whose primary
intention is to improve the general quality of available software, it is
arguable that there is no better license than the BSD license, as it
permits improvements to be used wherever they will help, without idealogical
or metallic constraint.

This is of particular value to those who produce reference implementations
of proposed standards: The case of TCP/IP clearly illustrates that freely
and universally available implementations leads the rapid acceptance of
standards -- often even being used instead of a de jure standard (eg, OSI
network models).

With the rapid proliferation of software licensed under the GNU General
Public License, however, the continued success of this role is called into
question.  Given that the inclusion of a few lines of "GPL-tainted" work
into a larger body of work will result in restricted distribution -- and
given that further work will likely build upon the "tainted" portions,
making them difficult to remove at a future date -- there are inevitable
circumstances where authors would, in order to protect their goal of
providing for the widespread usage of their work, wish to guard against
such "GPL-taint".

In addition, one can imagine that companies which operate by producing and
selling (possibly closed-source) code would wish to protect themselves
against the rise of a GPL-licensed competitor.  While under existing
licenses this would mean not releasing their code under any form of open
license, if a license existed under which they could incorporate any
improvements back into their own (commercial) products then they might be
far more willing to provide for non-closed distribution.

For the above reasons, we put forth this "BSD Protection License": A
license designed to retain the freedom granted by the BSD license to use
licensed works in a wide variety of settings, both non-commercial and
commercial, while protecting the work from having future contributors
restrict that freedom.

The precise terms and conditions for copying, distribution, and
modification follow.

BSD PROTECTION LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION, AND MODIFICATION
----------------------------------------------------------------

0. Definitions.
   a) "Program", below, refers to any program or work distributed under
      the terms of this license.
   b) A "work based on the Program", below, refers to either the Program
      or any derivative work under copyright law.
   c) "Modification", below, refers to the act of creating derivative works.
   d) "You", below, refers to each licensee.

1. Scope.
   This license governs the copying, distribution, and modification of the
   Program.  Other activities are outside the scope of this license; The
   act of running the Program is not restricted, and the output from the
   Program is covered only if its contents constitute a work based on the
   Program.

2. Verbatim copies.
   You may copy and distribute verbatim copies of the Program as you
   receive it, in any medium, provided that you conspicuously and
   appropriately publish on each copy an appropriate copyright notice; keep
   intact all the notices that refer to this License and to the absence of
   any warranty; and give any other recipients of the Program a copy of this
   License along with the Program.

3. Modification and redistribution under closed license.
   You may modify your copy or copies of the Program, and distribute
   the resulting derivative works, provided that you meet the
   following conditions:
   a) The copyright notice and disclaimer on the Program must be reproduced
      and included in the source code, documentation, and/or other materials
      provided in a manner in which such notices are normally distributed.
   b) The derivative work must be clearly identified as such, in order that
      it may not be confused with the original work.
   c) The license under which the derivative work is distributed must
      expressly prohibit the distribution of further derivative works.

4. Modification and redistribution under open license.
   You may modify your copy or copies of the Program, and distribute
   the resulting derivative works, provided that you meet the
   following conditions:
   a) The copyright notice and disclaimer on the Program must be reproduced
      and included in the source code, documentation, and/or other materials
      provided in a manner in which such notices are normally distributed.
   b) You must clearly indicate the nature and date of any changes made
      to the Program.  The full details need not necessarily be included in
      the individual modified files, provided that each modified file is
      clearly marked as such and instructions are included on where the
      full details of the modifications may be found.
   c) You must cause any work that you distribute or publish, that in whole
      or in part contains or is derived from the Program or any part
      thereof, to be licensed as a whole at no charge to all third
      parties under the terms of this License.

5. Implied acceptance.
   You may not copy or distribute the Program or any derivative works except
   as expressly provided under this license.  Consequently, any such action
   will be taken as implied acceptance of the terms of this license.

6. NO WARRANTY.
   THIS SOFTWARE IS PROVIDED "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 COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
   REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (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, EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
   POSSIBILITY OF SUCH DAMAGES.