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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html401/loose.dtd">
+<html><!-- This is the second edition of Free Software, Free Society: Selected Essays of Richard M. Stallman.
+
+Free Software Foundation
+
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+Boston, MA 02110-1335
+Copyright C 2002, 2010 Free Software Foundation, Inc.
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+of this book from the original English into another language provided
+the translation has been approved by the Free Software Foundation and
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+--><head><title>Free Software, Free Society, 2nd ed.: 9. Why Free Software Needs Free Documentation</title><meta name="description" content="This is the second edition of Richard Stallman's collection of essays."><meta name="keywords" content="Free Software, Free Society, 2nd ed.: 9. Why Free Software Needs Free Documentation"><meta name="resource-type" content="document"><meta name="distribution" content="global"><meta name="Generator" content="texi2html 1.82"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style type="text/css">
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+<a name="Free-Doc"></a>
+<header><div id="logo"><a href="/"><img src="../gnu.svg" height="100" width="100"></a></div><h1>Free Software, Free Society, 2nd ed.</h1></header><section id="main"><a name="Why-Free-Software-Needs-Free-Documentation"></a>
+<h1 class="chapter"> 9. Why Free Software Needs Free Documentation </h1>
+
+<a name="index-documentation-_0028see-also-both-FDL-and-manuals_0029-2"></a>
+<a name="index-manuals-_0028see-also-manuals_002c-FDL_002c-and-documentation_0029-1"></a>
+<p>The biggest deficiency in free operating systems is not in the
+software—it is the lack of good free manuals that we can include
+in these systems. Many of our most important programs do not come
+with full manuals. Documentation is an essential part of any software
+package; when an important free software package does not come with a
+free manual, that is a major gap. We have many such gaps today.
+</p>
+<a name="index-Perl"></a>
+<p>Once upon a time, many years ago, I thought I would learn Perl. I got
+a copy of a free manual, but I found it hard to read. When I asked
+Perl users about alternatives, they told me that there were better
+introductory manuals—but those were not free.
+</p>
+<p>Why was this? The authors of the good manuals had written them for
+<a name="index-O_0027Reilly-Associates"></a>
+O’Reilly Associates, which published them with restrictive
+terms—no copying, no modification, source files not
+available—which exclude them from the free software
+community.
+</p>
+<p>That wasn’t the first time this sort of thing has happened, and (to
+our community’s great loss) it was far from the last. Proprietary
+manual publishers have enticed a great many authors to restrict their
+manuals since then. Many times I have heard a GNU user eagerly tell
+me about a manual that he is writing, with which he expects to help
+the
+<a name="index-GNU_002c-GNU-Project-3"></a>
+GNU Project—and then had my hopes dashed, as he proceeded to
+explain that he had signed a contract with a publisher that would
+restrict it so that we cannot use it.
+</p>
+<p>Given that writing good English is a rare skill among programmers, we
+can ill afford to lose manuals this way.
+</p>
+<p>Free documentation, like free software, is a matter of freedom, not
+price. The problem with these manuals was not that O’Reilly
+Associates charged a price for printed copies—that in itself is
+fine. (The
+<a name="index-FSF_002c-and-selling-GNU-manuals"></a>
+<a name="index-manuals_002c-GNU"></a>
+<a name="index-GNU_002c-GNU-manuals"></a>
+Free Software Foundation sells printed
+copies of free GNU manuals, too.) But
+GNU manuals are available in source code form, while these manuals are
+available only on paper. GNU manuals come with permission to copy and
+modify; the Perl manuals do not. These restrictions are the problems.
+</p>
+<p>The criterion for a free manual is pretty much the same as for free
+software: it is a matter of giving all users certain freedoms.
+Redistribution (including commercial redistribution) must be
+permitted, so that the manual can accompany every copy of the program,
+on line or on paper. Permission for modification is crucial too.
+</p>
+<p>As a general rule, I don’t believe that it is essential for people to
+have permission to modify all sorts of articles and books. The issues
+for writings are not necessarily the same as those for software. For
+example, I don’t think you or I are obliged to give permission to
+modify articles like this one, which describe our actions and our
+views.
+</p>
+<p>But there is a particular reason why the freedom to modify is crucial
+for documentation for free software. When people exercise their right
+to modify the software, and add or change its features, if they are
+conscientious they will change the manual too—so they can provide
+accurate and usable documentation with the modified program. A manual
+which forbids programmers from being conscientious and finishing the job, or
+more precisely requires them to write a new manual from scratch if
+they change the program, does not fill our community’s needs.
+</p>
+<p>While a blanket prohibition on modification is unacceptable, some
+kinds of limits on the method of modification pose no problem. For
+example, requirements to preserve the original author’s copyright
+notice, the distribution terms, or the list of authors, are OK. It is
+also no problem to require modified versions to include notice that
+they were modified, even to have entire sections that may not be
+deleted or changed, as long as these sections deal with nontechnical
+topics. (Some GNU manuals have them.)
+</p>
+<p>These kinds of restrictions are not a problem because, as a practical
+matter, they don’t stop the conscientious programmer from adapting the
+manual to fit the modified program. In other words, they don’t block
+the free software community from making full use of the manual.
+</p>
+<p>However, it must be possible to modify all the <em>technical</em>
+content of the manual, and then distribute the result through all the usual
+media, through all the usual channels; otherwise, the restrictions do
+block the community, the manual is not free, and so we need another
+manual.
+</p>
+<p>Unfortunately, it is often hard to find someone to write another
+manual when a proprietary manual exists. The obstacle is that many
+users think that a proprietary manual is good enough—so they
+don’t see the need to write a free manual. They do not see that the
+free operating system has a gap that needs filling.
+</p>
+<p>Why do users think that proprietary manuals are good enough? Some
+have not considered the issue. I hope this article will do something
+to change that.
+</p>
+<a name="index-citizen-values_002c-proprietary-manuals"></a>
+<p>Other users consider proprietary manuals acceptable for the same
+reason so many people consider proprietary software acceptable: they
+judge in purely practical terms, not using freedom as a criterion.
+These people are entitled to their opinions, but since those opinions
+spring from values which do not include freedom, they are no guide for
+those of us who do value freedom.
+</p>
+<a name="index-call-to-action_002c-promote-free-documentation"></a>
+<p>Please spread the word about this issue. We continue to lose manuals
+to proprietary publishing. If we spread the word that proprietary
+manuals are not sufficient, perhaps the next person who wants to help
+GNU by writing documentation will realize, before it is too late, that
+he must above all make it free.
+</p>
+<p>We can also encourage commercial publishers to sell free, copylefted
+manuals instead of proprietary ones. One way you can help this is to
+check the distribution terms of a manual before you buy it, and
+prefer copylefted manuals to noncopylefted ones.
+</p>
+<p><b>Note:</b>
+We maintain a page that lists free books available from other publishers.
+<a name="index-documentation-_0028see-also-both-FDL-and-manuals_0029-3"></a>
+<a name="index-manuals-_0028see-also-manuals_002c-FDL_002c-and-documentation_0029-2"></a>
+</p><hr size="2"></section></body></html>