Zope Public License (ZPL) Version 2.1

A copyright notice accompanies this license document that identifies the
copyright holders.

This license has been certified as open source. It has also been designated as
GPL compatible by the Free Software Foundation (FSF).

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

    1. Redistributions in source code must retain the accompanying copyright 
       notice, this list of conditions, and the following disclaimer. 

    2. Redistributions in binary form must reproduce the accompanying 
       copyright notice, this list of conditions, and the following 
       disclaimer in the documentation and/or other materials provided with 
       the distribution.

    3. Names of the copyright holders must not be used to endorse or promote
       products derived from this software without prior written permission 
       from the copyright holders.

    4. The right to distribute this software or to use it for any purpose does 
       not give you the right to use Servicemarks (sm) or Trademarks (tm) of the 
       copyright holders. Use of them is covered by separate agreement with the 
       copyright holders.

    5. If any files are modified, you must cause the modified files to carry
       prominent notices stating that you changed the files and the date of any 
       change.

Disclaimer

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED
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 HOLDERS 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.
