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2    <!-- Parent-Version: 1.85 -->
3  <title>The Free Software Definition - GNU Project - Free Software Foundation (FSF)</title>  <title>What is free software?
4    - GNU Project - Free Software Foundation</title>
5    
6  <meta http-equiv="Keywords" content="GNU, FSF, Free Software Foundation, Linux, Emacs, GCC, Unix, Free Software, Operating System, GNU Kernel, HURD, GNU HURD, Hurd" />  <meta http-equiv="Keywords" content="GNU, FSF, Free Software Foundation, Linux, Emacs, GCC, Unix, Free Software, Operating System, GNU Kernel, HURD, GNU HURD, Hurd" />
7  <meta http-equiv="Description" content="Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use." />  <meta http-equiv="Description" content="Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use." />
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10  <!--#include virtual="/server/banner.html" -->  <!--#include virtual="/server/banner.html" -->
11    
12  <h2>The Free Software Definition</h2>  <h2>What is free software?</h2>
13    
14    <blockquote class="note" id="fsf-licensing"><p style="font-size: 80%">
15    Have a question about free software licensing not answered here?
16    See our other <a href="http://www.fsf.org/licensing">licensing resources</a>,
17    and if necessary contact the FSF Compliance Lab
18    at <a href="mailto:licensing@fsf.org">licensing@fsf.org</a>.</p>
19    </blockquote>
20    
21    <h3>The Free Software Definition</h3>
22    
23    <blockquote>
24    <p>
25    The free software definition presents the criteria for whether a
26    particular software program qualifies as free software.  From time to
27    time we revise this definition, to clarify it or to resolve questions
28    about subtle issues.  See the <a href="#History">History section</a>
29    below for a list of changes that affect the definition of free
30    software.
31    </p>
32    
33  <p>  <p>
34  We maintain this free software definition to show clearly what must be  &ldquo;Open source&rdquo; is something different: it has a very
35  true about a particular software program for it to be considered free  different philosophy based on different values.  Its practical
36  software.  From time to time we revise this definition to clarify it.  definition is different too, but nearly all open source programs are
37  If you would like to review the changes we've made, please see  in fact free.  We explain the
38  the <a href="#History">History section</a> below for more information.  difference in <a href="/philosophy/open-source-misses-the-point.html">
39    Why &ldquo;Open Source&rdquo; misses the point of Free Software</a>.
40  </p>  </p>
41    </blockquote>
42    
43  <p>  <p>
44  &ldquo;Free software&rdquo; is a matter of liberty, not price.  To understand  &ldquo;Free software&rdquo; means software that respects users'
45  the concept, you should think of &ldquo;free&rdquo; as in &ldquo;free speech,&rdquo;  freedom and community.  Roughly, it means that <b>the users have the
46  not as in &ldquo;free beer.&rdquo;  freedom to run, copy, distribute, study, change and improve the
47    software</b>.  Thus, &ldquo;free software&rdquo; is a matter of
48    liberty, not price.  To understand the concept, you should think of
49    &ldquo;free&rdquo; as in &ldquo;free speech,&rdquo; not as in
50    &ldquo;free beer&rdquo;.  We sometimes call it &ldquo;libre
51    software,&rdquo; borrowing the French or Spanish word for
52    &ldquo;free&rdquo; as in freedom, to show we do not mean the software
53    is gratis.
54  </p>  </p>
55    
56  <p>  <p>
57  Free software is a matter of the users' freedom to run, copy, distribute,  We campaign for these freedoms because everyone deserves them.  With
58  study, change and improve the software.  More precisely, it means that the  these freedoms, the users (both individually and collectively) control
59  program's users have the four essential freedoms:  the program and what it does for them.  When users don't control the
60    program, we call it a &ldquo;nonfree&rdquo; or
61    &ldquo;proprietary&rdquo; program.  The nonfree program controls the
62    users, and the developer controls the program; this makes the
63    program <a href="/philosophy/free-software-even-more-important.html">
64    an instrument of unjust power</a>.
65    </p>
66    
67    <h4> The four essential freedoms</h4>
68    
69    <p>
70    A program is free software if the program's users have the
71    four essential freedoms:
72  </p>  </p>
73    
74  <ul>  <ul>
75    <li>The freedom to run the program, for any purpose (freedom 0).</li>    <li>The freedom to run the program as you wish,
76    <li>The freedom to study how the program works, and change it to make        for any purpose (freedom 0).</li>
77        it do what you wish (freedom 1). Access to the source code is a    <li>The freedom to study how the program works, and change it so it
78        precondition for this.        does your computing as you wish (freedom 1). Access to the source
79          code is a precondition for this.
80    </li>    </li>
81    <li>The freedom to redistribute copies so you can help your neighbor    <li>The freedom to redistribute copies so you can help others
82        (freedom 2).        (freedom 2).
83    </li>    </li>
84    <li>The freedom to distribute copies of your modified versions    <li>The freedom to distribute copies of your modified versions
# Line 48  program's users have the four essential Line 89  program's users have the four essential
89  </ul>  </ul>
90    
91  <p>  <p>
92  A program is free software if users have all of these freedoms.  Thus,  A program is free software if it gives users adequately all of these
93  you should be free to redistribute copies, either with or without  freedoms.  Otherwise, it is nonfree.  While we can distinguish various
94  modifications, either gratis or charging a fee for distribution, to  nonfree distribution schemes in terms of how far they fall short of
95  <a href="#exportcontrol">anyone anywhere</a>.  Being free to do these  being free, we consider them all equally unethical.</p>
96  things means (among other things) that you do not have to ask or pay  
97  for permission to do so.  <p>In any given scenario, these freedoms must apply to whatever code
98  </p>  we plan to make use of, or lead others to make use of.  For instance,
99    consider a program A which automatically launches a program B to
100    handle some cases.  If we plan to distribute A as it stands, that
101    implies users will need B, so we need to judge whether both A and B
102    are free.  However, if we plan to modify A so that it doesn't use B,
103    only A needs to be free; B is not pertinent to that plan.</p>
104    
105  <p>  <p>
106  You should also have the freedom to make modifications and use them  &ldquo;Free software&rdquo; does not mean &ldquo;noncommercial&rdquo;.  A free
107  privately in your own work or play, without even mentioning that they  program must be available for commercial use, commercial development,
108  exist.  If you do publish your changes, you should not be required to  and commercial distribution.  Commercial development of free software
109  notify anyone in particular, or in any particular way.  is no longer unusual; such free commercial software is very important.
110    You may have paid money to get copies of free software, or you may have
111    obtained copies at no charge.  But regardless of how you got your copies,
112    you always have the freedom to copy and change the software, even to
113    <a href="/philosophy/selling.html">sell copies</a>.
114  </p>  </p>
115    
116    <p>The rest of this page clarifies certain points about what makes
117    specific freedoms adequate or not.</p>
118    
119    <h4>The freedom to run the program as you wish</h4>
120    
121  <p>  <p>
122  The freedom to run the program means the freedom for any kind of person  The freedom to run the program means the freedom for any kind of person
123  or organization to use it on any kind of computer system, for any kind of  or organization to use it on any kind of computer system, for any kind of
# Line 75  for her purposes, but you are not entitl Line 130  for her purposes, but you are not entitl
130  </p>  </p>
131    
132  <p>  <p>
133  The freedom to redistribute copies must include binary or executable  The freedom to run the program as you wish means that you are not
134  forms of the program, as well as source code, for both modified and  forbidden or stopped from making it run.  This has nothing to do with what
135  unmodified versions.  (Distributing programs in runnable form is necessary  functionality the program has, whether it is technically capable of
136  for conveniently installable free operating systems.)  It is OK if there  functioning in any given environment, or whether it is useful for any
137  is no way to produce a binary or executable form for a certain program  particular computing activity.</p>
138  (since some languages don't support that feature), but you must have the  
139  freedom to redistribute such forms should you find or develop a way to  <h4>The freedom to study the source code and make changes</h4>
 make them.  
 </p>  
140    
141  <p>  <p>
142  In order for freedoms 1 and 3 (the freedom to make changes and the  In order for freedoms 1 and 3 (the freedom to make changes and the
143  freedom to publish improved versions) to be meaningful, you must have  freedom to publish the changed versions) to be meaningful, you must have
144  access to the source code of the program.  Therefore, accessibility of  access to the source code of the program.  Therefore, accessibility of
145  source code is a necessary condition for free software.  Obfuscated  source code is a necessary condition for free software.  Obfuscated
146  &ldquo;source code&rdquo; is not real source code and does not count  &ldquo;source code&rdquo; is not real source code and does not count
# Line 97  as source code. Line 150  as source code.
150  <p>  <p>
151  Freedom 1 includes the freedom to use your changed version in place of  Freedom 1 includes the freedom to use your changed version in place of
152  the original.  If the program is delivered in a product designed to  the original.  If the program is delivered in a product designed to
153  run someone else's modified versions but refuse to run yours &mdash;  run someone else's modified versions but refuse to run yours &mdash; a
154  a practice known as &ldquo;tivoization&rdquo; or (through  practice known as &ldquo;tivoization&rdquo; or &ldquo;lockdown&rdquo;,
155  blacklisting) as &ldquo;secure boot&rdquo; &mdash; freedom 1 becomes a  or (in its practitioners' perverse terminology) as &ldquo;secure
156  theoretical fiction rather than a practical freedom.  This is not  boot&rdquo; &mdash; freedom 1 becomes an empty pretense rather than a
157  sufficient.  In other words, these binaries are not free software  practical reality.  These binaries are not free
158  even if the source code they are compiled from is free.  software even if the source code they are compiled from is free.
159  </p>  </p>
160    
161  <p>  <p>
# Line 114  license is too restrictive to qualify as Line 167  license is too restrictive to qualify as
167  </p>  </p>
168    
169  <p>  <p>
170    Whether a change constitutes an improvement is a subjective matter.
171    If your right to modify a program is limited, in substance, to changes that
172    someone else considers an improvement, that program is not free.
173    </p>
174    
175    <h4>The freedom to redistribute if you wish: basic requirements</h4>
176    
177    <p>Freedom to distribute (freedoms 2 and 3) means you are free to
178    redistribute copies, either with or without modifications, either
179    gratis or charging a fee for distribution, to
180    <a href="#exportcontrol">anyone anywhere</a>.  Being free to do these
181    things means (among other things) that you do not have to ask or pay
182    for permission to do so.
183    </p>
184    
185    <p>
186    You should also have the freedom to make modifications and use them
187    privately in your own work or play, without even mentioning that they
188    exist.  If you do publish your changes, you should not be required to
189    notify anyone in particular, or in any particular way.
190    </p>
191    
192    <p>
193  Freedom 3 includes the freedom to release your modified versions  Freedom 3 includes the freedom to release your modified versions
194  as free software.  A free license may also permit other ways of  as free software.  A free license may also permit other ways of
195  releasing them; in other words, it does not have to be  releasing them; in other words, it does not have to be
# Line 123  as a free license. Line 199  as a free license.
199  </p>  </p>
200    
201  <p>  <p>
202  In order for these freedoms to be real, they must be permanent and  The freedom to redistribute copies must include binary or executable
203  irrevocable as long as you do nothing wrong; if the developer of the  forms of the program, as well as source code, for both modified and
204  software has the power to revoke the license, or retroactively change  unmodified versions.  (Distributing programs in runnable form is necessary
205  its terms, without your doing anything wrong to give cause, the  for conveniently installable free operating systems.)  It is OK if there
206  software is not free.  is no way to produce a binary or executable form for a certain program
207    (since some languages don't support that feature), but you must have the
208    freedom to redistribute such forms should you find or develop a way to
209    make them.
210  </p>  </p>
211    
212    <h4>Copyleft</h4>
213    
214  <p>  <p>
215  However, certain kinds of rules about the manner of distributing free  Certain kinds of rules about the manner of distributing free
216  software are acceptable, when they don't conflict with the central  software are acceptable, when they don't conflict with the central
217  freedoms.  For example, copyleft (very simply stated) is the rule that  freedoms.  For example, <a href="/copyleft/copyleft.html">copyleft</a>
218  when redistributing the program, you cannot add restrictions to deny  (very simply stated) is the rule that when redistributing the program,
219  other people the central freedoms.  This rule does not conflict with  you cannot add restrictions to deny other people the central freedoms.
220  the central freedoms; rather it protects them.  This rule does not conflict with the central freedoms; rather it
221    protects them.
222  </p>  </p>
223    
224  <p>  <p>
225  &ldquo;Free software&rdquo; does not mean &ldquo;noncommercial.&rdquo;  A free  In the GNU project, we use copyleft to protect the four freedoms
226  program must be available for commercial use, commercial development,  legally for everyone.  We believe there are important reasons why
227  and commercial distribution.  Commercial development of free software  <a href="/philosophy/pragmatic.html">it is better to use
228  is no longer unusual; such free commercial software is very important.  copyleft</a>.  However,
229  You may have paid money to get copies of free software, or you may have  <a href="/philosophy/categories.html#Non-CopyleftedFreeSoftware">
230  obtained copies at no charge.  But regardless of how you got your copies,  noncopylefted free software</a> is ethical
231  you always have the freedom to copy and change the software, even to  too.  See <a href="/philosophy/categories.html">Categories of Free
232  <a href="/philosophy/selling.html">sell copies</a>.  Software</a> for a description of how &ldquo;free software,&rdquo;
233    &ldquo;copylefted software&rdquo; and other categories of software
234    relate to each other.
235  </p>  </p>
236    
237  <p>  <h4>Rules about packaging and distribution details</h4>
 Whether a change constitutes an improvement is a subjective matter.  
 If your modifications are limited, in substance, to changes that  
 someone else considers an improvement, that is not freedom.  
 </p>  
238    
239  <p>  <p>
240  However, rules about how to package a modified version are acceptable,  Rules about how to package a modified version are acceptable,
241  if they don't substantively limit your freedom to release modified  if they don't substantively limit your freedom to release modified
242  versions, or your freedom to make and use modified versions privately.  versions, or your freedom to make and use modified versions privately.
243  Thus, it is acceptable for the license to require that you change the  Thus, it is acceptable for the license to require that you change the
# Line 181  are also acceptable. Line 261  are also acceptable.
261  </p>  </p>
262    
263  <p>  <p>
264  In the GNU project, we use  A special issue arises when a license requires changing the name by
265  <a href="/copyleft/copyleft.html">copyleft</a>  which the program will be invoked from other programs.  That
266  to protect these freedoms legally for everyone.  But  effectively hampers you from releasing your changed version so that it
267  <a href="/philosophy/categories.html#Non-CopyleftedFreeSoftware">noncopylefted  can replace the original when invoked by those other programs.  This
268  free software</a> also exists.  We believe there are important reasons why  sort of requirement is acceptable only if there's a suitable aliasing
269  <a href="/philosophy/pragmatic.html">it is better to use copyleft</a>,  facility that allows you to specify the original program's name as an
270  but if your program is noncopylefted free software, it is still basically  alias for the modified version.</p>
271  ethical. (See <a href="/philosophy/categories.html">Categories of Free Software</a> for a description of how &ldquo;free software,&rdquo; &ldquo;copylefted software&rdquo; and other categories of software relate to each other.)  
272  </p>  <h4>Export regulations</h4>
273    
274  <p>  <p>
275  Sometimes government <a id="exportcontrol">export control regulations</a>  Sometimes government <a id="exportcontrol">export control regulations</a>
# Line 199  eliminate or override these restrictions Line 279  eliminate or override these restrictions
279  is refuse to impose them as conditions of use of the program.  In this  is refuse to impose them as conditions of use of the program.  In this
280  way, the restrictions will not affect activities and people outside the  way, the restrictions will not affect activities and people outside the
281  jurisdictions of these governments.  Thus, free software licenses  jurisdictions of these governments.  Thus, free software licenses
282  must not require obedience to any export regulations as a condition of  must not require obedience to any nontrivial export regulations as a
283  any of the essential freedoms.  condition of exercising any of the essential freedoms.
284    </p>
285    
286    <p>
287    Merely mentioning the existence of export regulations, without making
288    them a condition of the license itself, is acceptable since it does
289    not restrict users.  If an export regulation is actually trivial for
290    free software, then requiring it as a condition is not an actual
291    problem; however, it is a potential problem, since a later change in
292    export law could make the requirement nontrivial and thus render the
293    software nonfree.
294    </p>
295    
296    <h4>Legal considerations</h4>
297    
298    <p>
299    In order for these freedoms to be real, they must be permanent and
300    irrevocable as long as you do nothing wrong; if the developer of the
301    software has the power to revoke the license, or retroactively add
302    restrictions to its terms, without your doing anything wrong to give
303    cause, the software is not free.
304  </p>  </p>
305    
306  <p>  <p>
307    A free license may not require compliance with the license of a
308    nonfree program.  Thus, for instance, if a license requires you to
309    comply with the licenses of &ldquo;all the programs you use&rdquo;, in
310    the case of a user that runs nonfree programs this would require
311    compliance with the licenses of those nonfree programs; that makes the
312    license nonfree.
313    </p>
314    
315    <p>
316    It is acceptable for a free license to specify which jurisdiction's
317    law applies, or where litigation must be done, or both.
318    </p>
319    
320    <h4>Contract-based licenses</h4>
321    
322    <p>
323  Most free software licenses are based on copyright, and there are limits  Most free software licenses are based on copyright, and there are limits
324  on what kinds of requirements can be imposed through copyright.  If a  on what kinds of requirements can be imposed through copyright.  If a
325  copyright-based license respects freedom in the ways described above, it  copyright-based license respects freedom in the ways described above, it
# Line 222  legitimate, we will have to think about Line 338  legitimate, we will have to think about
338  it is nonfree.  it is nonfree.
339  </p>  </p>
340    
341    <h4>Use the right words when talking about free software</h4>
342    
343  <p>  <p>
344  When talking about free software, it is best to avoid using terms  When talking about free software, it is best to avoid using terms
345  like &ldquo;give away&rdquo; or &ldquo;for free,&rdquo; because those terms imply that  like &ldquo;give away&rdquo; or &ldquo;for free,&rdquo; because those terms imply that
# Line 233  a list of proper <a href="/philosophy/fs Line 351  a list of proper <a href="/philosophy/fs
351  &ldquo;free software&rdquo;</a> into various languages.  &ldquo;free software&rdquo;</a> into various languages.
352  </p>  </p>
353    
354    <h4>How we interpret these criteria</h4>
355    
356  <p>  <p>
357  Finally, note that criteria such as those stated in this free software  Finally, note that criteria such as those stated in this free software
358  definition require careful thought for their interpretation.  To decide  definition require careful thought for their interpretation.  To decide
# Line 247  a conclusion about a new issue, we often Line 367  a conclusion about a new issue, we often
367  it easier to see why certain licenses do or don't qualify.  it easier to see why certain licenses do or don't qualify.
368  </p>  </p>
369    
370    <h4>Get help with free licenses</h4>
371    
372  <p>  <p>
373  If you are interested in whether a specific license qualifies as a free  If you are interested in whether a specific license qualifies as a free
374  software license, see our <a href="/licenses/license-list.html">list  software license, see our <a href="/licenses/license-list.html">list
# Line 269  help you can ensure that the license rea Line 391  help you can ensure that the license rea
391  and avoid various practical problems.  and avoid various practical problems.
392  </p>  </p>
393    
394  <h2 id="beyond-software">Beyond Software</h2>  <h3 id="beyond-software">Beyond Software</h3>
395    
396  <p>  <p>
397  <a href="/philosophy/free-doc.html">Software manuals must be free</a>,  <a href="/philosophy/free-doc.html">Software manuals must be free</a>,
# Line 281  manuals are in effect part of the softwa Line 403  manuals are in effect part of the softwa
403  The same arguments also make sense for other kinds of works of  The same arguments also make sense for other kinds of works of
404  practical use &mdash; that is to say, works that embody useful knowledge,  practical use &mdash; that is to say, works that embody useful knowledge,
405  such as educational works and reference  such as educational works and reference
406  works.  <a href="http://wikipedia.org">Wikipedia</a> is the best known  works.  <a href="http://wikipedia.org">Wikipedia</a> is the best-known
407  example.  example.
408  </p>  </p>
409    
# Line 291  has been extended to a definition of <a Line 413  has been extended to a definition of <a
413  free cultural works</a> applicable to any kind of works.  free cultural works</a> applicable to any kind of works.
414  </p>  </p>
415    
416  <h2 id="open-source">Open Source?</h2>  <h3 id="open-source">Open Source?</h3>
417    
418  <p>  <p>
419  Another group has started using the term &ldquo;open source&rdquo; to mean  Another group uses the term &ldquo;open source&rdquo; to mean
420  something close (but not identical) to &ldquo;free software.&rdquo;  We  something close (but not identical) to &ldquo;free software&rdquo;.  We
421  prefer the term &ldquo;free software&rdquo; because, once you have heard that  prefer the term &ldquo;free software&rdquo; because, once you have heard that
422  it refers to freedom rather than price, it calls to mind freedom.  The  it refers to freedom rather than price, it calls to mind freedom.  The
423  word &ldquo;open&rdquo; <a href="/philosophy/open-source-misses-the-point.html">  word &ldquo;open&rdquo; <a href="/philosophy/open-source-misses-the-point.html">
424  never refers to freedom</a>.  never refers to freedom</a>.
425  </p>  </p>
426    
427  <h2 id="History">History</h2>  <h3 id="History">History</h3>
428    
429  <p>From time to time we revise this Free Software Definition to  <p>From time to time we revise this Free Software Definition.  Here is
430  clarify it.  Here we provide a list of those modifications, along with  the list of substantive changes, along with links to show exactly what
431  links to illustrate exactly what changed, so that others can review  was changed.</p>
 them if they like.</p>  
432    
433  <ul>  <ul>
434    
435    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.152&amp;r2=1.153">Version
436    1.153</a>: Clarify that freedom to run the program means nothing stops
437    you from making it run.</li>
438    
439    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.140&amp;r2=1.141">Version
440    1.141</a>: Clarify which code needs to be free.</li>
441    
442    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.134&amp;r2=1.135">Version
443    1.135</a>: Say each time that freedom 0 is the freedom to run the program
444    as you wish.</li>
445    
446    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.133&amp;r2=1.134">Version
447    1.134</a>: Freedom 0 is not a matter of the program's functionality.</li>
448    
449    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.130&amp;r2=1.131">Version
450    1.131</a>: A free license may not require compliance with a nonfree license
451    of another program.</li>
452    
453    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.128&amp;r2=1.129">Version
454    1.129</a>: State explicitly that choice of law and choice of forum
455    specifications are allowed.  (This was always our policy.)</li>
456    
457    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.121&amp;r2=1.122">Version
458    1.122</a>: An export control requirement is a real problem if the
459    requirement is nontrivial; otherwise it is only a potential problem.</li>
460    
461    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.117&amp;r2=1.118">Version
462    1.118</a>: Clarification: the issue is limits on your right to modify,
463    not on what modifications you have made.  And modifications are not limited
464    to &ldquo;improvements&rdquo;</li>
465    
466    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.110&amp;r2=1.111">Version
467    1.111</a>: Clarify 1.77 by saying that only
468    retroactive <em>restrictions</em> are unacceptable.  The copyright
469    holders can always grant additional <em>permission</em> for use of the
470    work by releasing the work in another way in parallel.</li>
471    
472    <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.104&amp;r2=1.105">Version
473    1.105</a>: Reflect, in the brief statement of freedom 1, the point
474    (already stated in version 1.80) that it includes really using your modified
475    version for your computing.</li>
476    
477  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.91&amp;r2=1.92">Version  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.91&amp;r2=1.92">Version
478  1.92</a>: Clarify that obfuscated code does not qualify as source code.</li>  1.92</a>: Clarify that obfuscated code does not qualify as source code.</li>
479    
# Line 379  licenses.</li> Line 542  licenses.</li>
542    
543  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.10&amp;r2=1.11">Version  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.10&amp;r2=1.11">Version
544  1.11</a>: Note that a free license may require you to send a copy of  1.11</a>: Note that a free license may require you to send a copy of
545  versions you distribute to the author.</li>  versions you distribute to previous developers on request.</li>
546    
547  </ul>  </ul>
548    
549  <p>There are gaps in the version numbers because there are many other  <p>There are gaps in the version numbers shown above because there are
550  changes that do not affect the substance of the definition at all.  other changes in this page that do not affect the definition or its
551  Instead, they fix links, add translations, and so on.  If you would  interpretations.  For instance, the list does not include changes in
552  like to review the complete list of changes, you can do so on  asides, formatting, spelling, punctuation, or other parts of the page.
553  our <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb  You can review the complete list of changes to the page through
554    the <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb
555  interface</a>.</p>  interface</a>.</p>
556    
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557    
558    </div><!-- for id="content", starts in the include above -->
559  <!--#include virtual="/server/footer.html" -->  <!--#include virtual="/server/footer.html" -->
   
560  <div id="footer">  <div id="footer">
561    <div class="unprintable">
562    
563  <p>  <p>Please send general FSF &amp; GNU inquiries to
 Please send FSF &amp; GNU inquiries to  
564  <a href="mailto:gnu@gnu.org">&lt;gnu@gnu.org&gt;</a>.  <a href="mailto:gnu@gnu.org">&lt;gnu@gnu.org&gt;</a>.
565  There are also <a href="/contact/">other ways to contact</a>  There are also <a href="/contact/">other ways to contact</a>
566  the FSF.  the FSF.  Broken links and other corrections or suggestions can be sent
567  <br />  to <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.</p>
568  Please send broken links and other corrections or suggestions to  
569  <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.  <p><!-- TRANSLATORS: Ignore the original text in this paragraph,
570  </p>          replace it with the translation of these two:
571    
572            We work hard and do our best to provide accurate, good quality
573            translations.  However, we are not exempt from imperfection.
574            Please send your comments and general suggestions in this regard
575            to <a href="mailto:web-translators@gnu.org">
576            &lt;web-translators@gnu.org&gt;</a>.</p>
577    
578            <p>For information on coordinating and submitting translations of
579            our web pages, see <a
580            href="/server/standards/README.translations.html">Translations
581            README</a>. -->
582    Please see the <a
583    href="/server/standards/README.translations.html">Translations
584    README</a> for information on coordinating and submitting translations
585    of this article.</p>
586    </div>
587    
588  <p>  <!-- Regarding copyright, in general, standalone pages (as opposed to
589  Please see the       files generated as part of manuals) on the GNU web server should
590  <a href="/server/standards/README.translations.html">Translations       be under CC BY-ND 4.0.  Please do NOT change or remove this
591  README</a> for information on coordinating and submitting       without talking with the webmasters or licensing team first.
592  translations of this article.       Please make sure the copyright date is consistent with the
593  </p>       document.  For web pages, it is ok to list just the latest year the
594         document was modified, or published.
595        
596         If you wish to list earlier years, that is ok too.
597         Either "2001, 2002, 2003" or "2001-2003" are ok for specifying
598         years, as long as each year in the range is in fact a copyrightable
599         year, i.e., a year in which the document was published (including
600         being publicly visible on the web or in a revision control system).
601        
602         There is more detail about copyright years in the GNU Maintainers
603         Information document, www.gnu.org/prep/maintain. -->
604    
605    <p>Copyright &copy; 1996, 2002, 2004-2007, 2009-2018
606    Free Software Foundation, Inc.</p>
607    
608    <p>This page is licensed under a <a rel="license"
609    href="http://creativecommons.org/licenses/by-nd/4.0/">Creative
610    Commons Attribution-NoDerivatives 4.0 International License</a>.</p>
611    
612  <p>  <!--#include virtual="/server/bottom-notes.html" -->
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 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.  
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 permitted in any medium without royalty provided this notice is  
 preserved.  
 </p>  
613    
614  <p>  <p class="unprintable">Updated:
 Updated:  
615  <!-- timestamp start -->  <!-- timestamp start -->
616  $Date$  $Date$
617  <!-- timestamp end -->  <!-- timestamp end -->
618  </p>  </p>
619  </div>  </div>
   
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