LICENSE.txt

"openPMD-viewer, Copyright (c) 2015, The Regents of the University of 
California, through Lawrence Berkeley National Laboratory (subject to receipt 
of any required approvals from the U.S. Dept. of Energy).  All rights 
reserved."
 
Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:
 
(1) Redistributions of source code must retain the above copyright notice, this 
list of conditions and the following disclaimer.
 
(2) 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.
 
(3) Neither the name of the University of California, Lawrence Berkeley 
National Laboratory, U.S. Dept. of Energy 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OWNER OR CONTRIBUTORS 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.
 
You are under no obligation whatsoever to provide any bug fixes, patches, or 
upgrades to the features, functionality or performance of the source code 
("Enhancements") to anyone; however, if you choose to make your Enhancements 
available either publicly, or directly to Lawrence Berkeley National 
Laboratory, without imposing a separate written license agreement for such 
Enhancements, then you hereby grant the following license: a  non-exclusive, 
royalty-free perpetual license to install, use, modify, prepare derivative 
works, incorporate into other computer software, distribute, and sublicense 
such enhancements or derivative works thereof, in binary and source code form.