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applied to a free program could make it effectively
proprietary. To prevent this, the GPL assures that
patents cannot be used to render the program non-
free.
The precise terms and conditions for copying,
distribution and modifi cation follow.
TERMS AND CONDITIONS
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“This License” refers to version 3 of the GNU
General Public License.
“Copyright” also means copyright-like laws
that apply to other kinds of works, such as
semiconductor masks.
“The Program” refers to any copyrightable work
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To “propagate” a work means to do anything
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that licensees may convey the work under this
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1. Source Code.
The “source code” for a work means the preferred
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A “Standard Interface” means an interface that
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The “Corresponding Source” for a work in object
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The Corresponding Source need not include
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The Corresponding Source for a work in source
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All rights granted under this License are granted
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You may make, run and propagate covered works
that you do not convey, without conditions so long
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convey covered works to others for the sole purpose
of having them make modifi cations exclusively for
