Copyleft/guide Changeset - dccc2155aeeb

Changeset - dccc2155aeeb

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Bradley Kuhn (bkuhn) - 10 years ago 2014-03-20 12:50:20
bkuhn@ebb.org

Rewrite paragraph describing last paragraph of GPLv3§2.

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gpl-lgpl.tex

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gpl-lgpl.tex

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 freedoms.  Thus, GPLv3 permits users to convey covered works to contractors
 operating exclusively on the users' behalf, under the users' direction and
 control, and to require the contractors to keep the users' copyrighted
 changes confidential, but \textit{only if} the contractor is limited to acting
 on the users' behalf (just as the users' employees would have to act).
 The strict conditions in this ``contractors provision'' are needed so that it
 cannot be twisted to fit other activities, such as making a program available
 to downstream users or customers.  By making the limits on this provision
 very narrow, GPLv3 ensures that, in all other cases, contractors gets the
 full freedoms of the GPL that they deserve.
 % FIXME:  transition, and some word smith
 The explicit prohibition of sublicensing ensures that enforcement of the GPL
 is always by the copyright holder.  Usually, sublicensing is regarded as a
 practical convenience or necessity for the licensee, to avoid having to
 negotiate a license with each licensor in a chain of distribution.  The GPL
 solves this problem in another way, through its automatic licensing
 provision.
 GPLv3~\S2's final paragraph includes an explicit prohibition of sublicensing.
 This provision ensures that GPL enforcement is always by the copyright
 holder.  Usually, sublicensing is regarded as a practical convenience or
 necessity for the licensee, to avoid having to negotiate a license with each
 licensor in a chain of distribution.  The GPL solves this problem in another
 way --- through its automatic licensing provision found in GPLv3\~S10 (which
 is discussed in more detail in \S\~ref{GPLv3s10} of this tutorial).
 % FIXME: new section here, just to talk DRM before the other section.
 GPLv3 introduces provisions that respond to the growing practice of
 distributing GPL-covered programs in devices that employ technical means
 to restrict users from installing and running modified versions.  This
 practice thwarts the expectations of developers and users alike, because
 the right to modify is one of the core freedoms the GPL is designed to
 secure.
 Technological measures to defeat users' rights --- often described by such
 Orwellian phrases as ``digital rights management,'' which actually means

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