1Zope Public License (ZPL) Version 2.1 2 3A copyright notice accompanies this license document that identifies the 4copyright holders. 5 6This license has been certified as open source. It has also been designated as 7GPL compatible by the Free Software Foundation (FSF). 8 9Redistribution and use in source and binary forms, with or without 10modification, are permitted provided that the following conditions are met: 11 121. Redistributions in source code must retain the accompanying copyright 13notice, this list of conditions, and the following disclaimer. 14 152. Redistributions in binary form must reproduce the accompanying copyright 16notice, this list of conditions, and the following disclaimer in the 17documentation and/or other materials provided with the distribution. 18 193. Names of the copyright holders must not be used to endorse or promote 20products derived from this software without prior written permission from the 21copyright holders. 22 234. The right to distribute this software or to use it for any purpose does not 24give you the right to use Servicemarks (sm) or Trademarks (tm) of the 25copyright 26holders. Use of them is covered by separate agreement with the copyright 27holders. 28 295. If any files are modified, you must cause the modified files to carry 30prominent notices stating that you changed the files and the date of any 31change. 32 33Disclaimer 34 35THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED 36OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 37OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 38EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, 39INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 41PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 42LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 43NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 44EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45