<h2>License</h2>

<p>
Orbit is free software: it can be used for both academic
and commercial purposes at absolutely no cost. There are no
royalties or GNU-like "copyleft" restrictions. Orbit
qualifies as
<a href="http://www.opensource.org/docs/definition.html">Open Source</a>
software.
Its licenses are compatible with
<a href="http://www.gnu.org/licenses/gpl.html">GPL</a>.
Orbit is not in the public domain and the

<a href="http://www.keplerproject.org">Kepler Project</a>
keep its copyright.
The legal details are below. 
</p>

<p>The spirit of the license is that you are free to use
Orbit for any purpose at no cost without having to ask us.
The only requirement is that if you do use Orbit, then you
should give us credit by including the appropriate copyright notice
somewhere in your product or its documentation.</p>

<p>The Orbit library is designed and implemented by Fabio Mascarenhas,
 Andr&eacute; Carregal and Tom&aacute;s Guisasola.
The implementation is not derived from licensed software.</p>

<hr/>
<p>Copyright &copy; 2007-2008 The Kepler Project.</p>

<p>Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use, copy,
modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:</p>

<p>The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.</p>

<p>THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.</p>

