LICENSE.txt

Copyright ©, The Atmospheric Radiative Transfer Simulation Developers

The Atmospheric Radiative Transfer Simulation (ARTS) software and source
code is distributed by user choice of license as either

1) GNU Lesser General Public License (LGPL) version 3 or later

OR

2) GNU General Public License (GPL) version 3 or later

The software, source code, and documentation are all provided as is 
without any warranties.

NOTES:

The -DENABLE_ARTS_LGPL=1 flag is necessary to activate LGPL code paths


############################################ GPL v3


                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

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the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
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Also add information on how to contact you by electronic and paper mail.

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The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
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For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.


########################################### /GPL v3
########################################### LGPL v3


                   GNU LESSER GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.


  This version of the GNU Lesser General Public License incorporates
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  You may convey a covered work under sections 3 and 4 of this License
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########################################## /LGPL v3