{% extends "base_compliance.html" %}
{% block subtitle %}Copyleft Compliance Projects - {% endblock %}
{% block submenuselection %}CopyleftPrinciples{% endblock %}
{% block content %}
[ <a href="/copyleft-compliance/principles.kr.html">한국어 판</a>]<br/>
[ <a href="/copyleft-compliance/principles.kr.html">한국어 판 (Korean)</a>]<br/>
<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 — 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