|
 |
e935c3 |
|
|
|
3d5226 |
<section id="licenses-gfdl-section-1" xreflabel="Preamble">
|
|
|
e935c3 |
|
|
|
e935c3 |
<title>Preamble</title>
|
|
|
e935c3 |
|
|
|
e935c3 |
<para>The purpose of this License is to make a manual, textbook,
|
|
|
09f548 |
or other functional and useful document <quote>free</quote> in the sense of
|
|
|
e935c3 |
freedom: to assure everyone the effective freedom to copy and
|
|
|
e935c3 |
redistribute it, with or without modifying it, either commercially
|
|
|
e935c3 |
or noncommercially. Secondarily, this License preserves for the
|
|
|
e935c3 |
author and publisher a way to get credit for their work, while not
|
|
|
e935c3 |
being considered responsible for modifications made by
|
|
|
e935c3 |
others.</para>
|
|
|
e935c3 |
|
|
|
09f548 |
<para>This License is a kind of <quote>copyleft</quote>, which means that
|
|
|
e935c3 |
derivative works of the document must themselves be free in the
|
|
|
e935c3 |
same sense. It complements the
|
|
|
e935c3 |
linkend="licenses-gfdl-chapter" />, which is a copyleft license
|
|
|
e935c3 |
designed for free software.</para>
|
|
|
e935c3 |
|
|
|
e935c3 |
<para>We have designed this License in order to use it for manuals
|
|
|
e935c3 |
for free software, because free software needs free documentation:
|
|
|
e935c3 |
a free program should come with manuals providing the same
|
|
|
e935c3 |
freedoms that the software does. But this License is not limited
|
|
|
e935c3 |
to software manuals; it can be used for any textual work,
|
|
|
e935c3 |
regardless of subject matter or whether it is published as a
|
|
|
e935c3 |
printed book. We recommend this License principally for works
|
|
|
e935c3 |
whose purpose is instruction or reference.</para>
|
|
|
e935c3 |
|
|
|
e935c3 |
</section>
|