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<h1>The Principles of Community-Oriented GPL Enforcement</h1>

<p>The GNU General Public License (GPL) is the principal copyleft

license. Copyleft is a framework that permits ongoing sharing of a

published work, with clear permissions that <em>both</em> grant

<em>and</em> defend its users' freedoms &mdash; in contrast to other

free licenses that grant freedom but don't defend it.

Free software released under the GPL is fundamental

to modern technology, powering everything from laptops and desktops to

household appliances, cars, and mobile phones, to the foundations of

the Internet. Following the GPL's terms is easy — it gets more

complicated only when products distributed with GPL'd software also

<p>The GPL,

enforced when necessary according to these principles, provides a

foundation for respectful, egalitarian, software-sharing

communities.

</p>

<p><em>[ This document is also published on <a href="https://fsf.org/licensing/enforcement-principles">FSF's site</a>. ]</em></p>

<p>Copyright &copy; 2015, Free Software Foundation, Inc., Software Freedom Conservancy, Inc., Bradley M. Kuhn, Allison Randal, Karen M. Sandler.

<br/>Licensed under the <a rel="license" href="https://creativecommons.org/licenses/by-sa/4.0">Creative Commons Attribution-ShareAlike 4.0 International License</a>.

<br/>The copyright holders ask that per &sect;3(a)(1)(A)(i) and &sect;3(a)(1)(A)(v) of that license, you ensure these two links (<a href="https://sfconservancy.org/linux-compliance/principles.html">[1]</a>,

<a href="https://fsf.org/licensing/enforcement-principles">[2]</a>) are preserved in modified and/or redistributed versions.</p>