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Zope Public License (ZPL) Version 2.1

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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

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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

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documentation and/or other materials provided with the distribution.

3. Names of the copyright holders must not be used to endorse or promote

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5. If any files are modified, you must cause the modified files to carry

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