Copyright Policy This software was originally developed by the Billinge group as part of the Distributed Data Analysis of Neutron Scattering Experiments (DANSE) project funded by the US National Science Foundation under grant DMR-0520547. Developments of PDFfit2 were funded by NSF grant DMR-0304391 in the Billinge group, and with support from Michigan State University and Columbia University. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the respective funding bodies. Subsequent development was done in the Billinge group at Columbia University and then in collaboration between the Billinge group at Columbia and Pavol Juhas at Brookhaven National Laboratory. Moving forward, PDFgui will be maintained as a community project with contributions welcomed from many people. Up to the release 1.1.2 (February 2017) the copyright was held by the institutions that hosted the work as follows: Copyright 2006-2007, Board of Trustees of Michigan State University, Copyright 2008-2012, Board of Trustees of Columbia University in the city of New York. Copyright 2013, Brookhaven National Laboratory (Copyright holder indicated in each source file). As of February 2017, and the 1.1.2 release, PDFgui has moved to a shared copyright model. PDFgui uses a shared copyright model. Each contributor maintains copyright over their contributions to PDFgui. But, it is important to note that these contributions are typically only changes to the repositories. Thus, the PDFgui source code, in its entirety, is not the copyright of any single person or institution. Instead, it is the collective copyright of the entire PDFgui Development Team. If individual contributors want to maintain a record of what changes/contributions they have specific copyright on, they should indicate their copyright in the commit message of the change, when they commit the change to one of the PDFgui repositories. The PDFgui Development Team is the set of all contributors to the PDFgui project. A full list can be obtained from the git version control logs. For more information please visit the project web-page: http://www.diffpy.org/ or email Prof. Simon Billinge at firstname.lastname@example.org License Agreement Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * 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. * Neither the name of the copyright holder 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 COPYRIGHT HOLDER "AS IS". COPYRIGHT HOLDER EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, TITLE, FITNESS, ADEQUACY OR SUITABILITY FOR A PARTICULAR PURPOSE, AND ANY WARRANTIES OF FREEDOM FROM INFRINGEMENT OF ANY DOMESTIC OR FOREIGN PATENT, COPYRIGHTS, TRADE SECRETS OR OTHER PROPRIETARY RIGHTS OF ANY PARTY. IN NO EVENT SHALL COPYRIGHT HOLDER BE LIABLE TO ANY PARTY 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 OR RELATING TO THIS AGREEMENT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.