/[www]/www/philosophy/free-sw.html
ViewVC logotype

Diff of /www/philosophy/free-sw.html

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.102 by rms, Mon Nov 8 20:25:05 2010 UTC revision 1.150 by ineiev, Fri Nov 18 06:31:39 2016 UTC
# Line 1  Line 1 
1  <!--#include virtual="/server/header.html" -->  <!--#include virtual="/server/header.html" -->
2    <!-- Parent-Version: 1.79 -->
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." />
 <link rel="alternate" title="What's New" href="http://www.gnu.org/rss/whatsnew.rss" type="application/rss+xml" />  
 <link rel="alternate" title="New Free Software" href="http://www.gnu.org/rss/quagga.rss" type="application/rss+xml" />  
8    
9    <!--#include virtual="/philosophy/po/free-sw.translist" -->
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    <h3>The Free Software Definition</h3>
15    
16    <!--#include virtual="/licenses/fsf-licensing.html" -->
17    <blockquote>
18  <p>  <p>
19  We maintain this free software definition to show clearly what must be  The free software definition presents the criteria for whether a
20  true about a particular software program for it to be considered free  particular software program qualifies as free software.  From time to
21  software.  From time to time we revise this definition to clarify it.  time we revise this definition, to clarify it or to resolve questions
22  If you would like to review the changes we've made, please see  about subtle issues.  See the <a href="#History">History section</a>
23  the <a href="#History">History section</a> below for more information.  below for a list of changes that affect the definition of free
24    software.
25  </p>  </p>
26    </blockquote>
27    
28  <p>  <p>
29  &ldquo;Free software&rdquo; is a matter of liberty, not price.  To understand  &ldquo;Free software&rdquo; means software that respects users'
30  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
31  not as in &ldquo;free beer.&rdquo;  freedom to run, copy, distribute, study, change and improve the
32    software</b>.  Thus, &ldquo;free software&rdquo; is a matter of
33    liberty, not price.  To understand the concept, you should think of
34    &ldquo;free&rdquo; as in &ldquo;free speech,&rdquo; not as in
35    &ldquo;free beer&rdquo;.  We sometimes call it &ldquo;libre
36    software,&rdquo; borrowing the French or Spanish word for
37    &ldquo;free&rdquo; as in freedom, to show we do not mean the software
38    is gratis.
39  </p>  </p>
40    
41  <p>  <p>
42  Free software is a matter of the users' freedom to run, copy, distribute,  We campaign for these freedoms because everyone deserves them.  With
43  study, change and improve the software.  More precisely, it means that the  these freedoms, the users (both individually and collectively) control
44  program's users have the four essential freedoms:  the program and what it does for them.  When users don't control the
45    program, we call it a &ldquo;nonfree&rdquo; or
46    &ldquo;proprietary&rdquo; program.  The nonfree program controls the
47    users, and the developer controls the program; this makes the
48    program <a href="/philosophy/free-software-even-more-important.html">
49    an instrument of unjust power</a>.
50    </p>
51    
52    <h4> The four essential freedoms</h4>
53    
54    <p>
55    A program is free software if the program's users have the
56    four essential freedoms:
57  </p>  </p>
58    
59  <ul>  <ul>
60    <li>The freedom to run the program, for any purpose (freedom 0).</li>    <li>The freedom to run the program as you wish,
61    <li>The freedom to study how the program works, and change it to make        for any purpose (freedom 0).</li>
62        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
63        precondition for this.        does your computing as you wish (freedom 1). Access to the source
64          code is a precondition for this.
65    </li>    </li>
66    <li>The freedom to redistribute copies so you can help your neighbor    <li>The freedom to redistribute copies so you can help your neighbor
67        (freedom 2).        (freedom 2).
# Line 48  program's users have the four essential Line 74  program's users have the four essential
74  </ul>  </ul>
75    
76  <p>  <p>
77  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
78  you should be free to redistribute copies, either with or without  freedoms.  Otherwise, it is nonfree.  While we can distinguish various
79  modifications, either gratis or charging a fee for distribution, to  nonfree distribution schemes in terms of how far they fall short of
80  <a href="#exportcontrol">anyone anywhere</a>.  Being free to do these  being free, we consider them all equally unethical.</p>
81  things means (among other things) that you do not have to ask or pay  
82  for permission to do so.  <p>In any given scenario, these freedoms must apply to whatever code
83  </p>  we plan to make use of, or lead others to make use of.  For instance,
84    consider a program A which automatically launches a program B to
85    handle some cases.  If we plan to distribute A as it stands, that
86    implies users will need B, so we need to judge whether both A and B
87    are free.  However, if we plan to modify A so that it doesn't use B,
88    only A needs to be free; B is not pertinent to that plan.</p>
89    
90  <p>  <p>
91  You should also have the freedom to make modifications and use them  &ldquo;Free software&rdquo; does not mean &ldquo;noncommercial&rdquo;.  A free
92  privately in your own work or play, without even mentioning that they  program must be available for commercial use, commercial development,
93  exist.  If you do publish your changes, you should not be required to  and commercial distribution.  Commercial development of free software
94  notify anyone in particular, or in any particular way.  is no longer unusual; such free commercial software is very important.
95    You may have paid money to get copies of free software, or you may have
96    obtained copies at no charge.  But regardless of how you got your copies,
97    you always have the freedom to copy and change the software, even to
98    <a href="/philosophy/selling.html">sell copies</a>.
99  </p>  </p>
100    
101    <p>The rest of this page clarifies certain points about what makes
102    specific freedoms adequate or not.</p>
103    
104    <h4>The freedom to run the program as you wish</h4>
105    
106  <p>  <p>
107  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
108  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 115  for her purposes, but you are not entitl
115  </p>  </p>
116    
117  <p>  <p>
118  The freedom to redistribute copies must include binary or executable  The freedom to run the program as you wish means that you are not
119  forms of the program, as well as source code, for both modified and  forbidden or stopped from doing so.  It has nothing to do with what
120  unmodified versions.  (Distributing programs in runnable form is necessary  functionality the program has, or whether it is useful for what you
121  for conveniently installable free operating systems.)  It is OK if there  want to do.</p>
122  is no way to produce a binary or executable form for a certain program  
123  (since some languages don't support that feature), but you must have the  <h4>The freedom to study the source code and make changes</h4>
 freedom to redistribute such forms should you find or develop a way to  
 make them.  
 </p>  
124    
125  <p>  <p>
126  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
127  freedom to publish improved versions) to be meaningful, you must have  freedom to publish the changed versions) to be meaningful, you must have
128  access to the source code of the program.  Therefore, accessibility of  access to the source code of the program.  Therefore, accessibility of
129  source code is a necessary condition for free software.  Obfuscated  source code is a necessary condition for free software.  Obfuscated
130  &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 134  as source code.
134  <p>  <p>
135  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
136  the original.  If the program is delivered in a product designed to  the original.  If the program is delivered in a product designed to
137  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
138  a practice known as &ldquo;tivoization&rdquo; or (in its practitioners'  practice known as &ldquo;tivoization&rdquo; or &ldquo;lockdown&rdquo;,
139  perverse terminology) as &ldquo;secure boot&rdquo; &mdash; freedom 1 becomes a  or (in its practitioners' perverse terminology) as &ldquo;secure
140  theoretical fiction rather than a practical freedom.  This is not  boot&rdquo; &mdash; freedom 1 becomes an empty pretense rather than a
141  sufficient.  In other words, these binaries are not free software  practical reality.  These binaries are not free
142  even if the source code they are compiled from is free.  software even if the source code they are compiled from is free.
143  </p>  </p>
144    
145  <p>  <p>
# Line 114  license is too restrictive to qualify as Line 151  license is too restrictive to qualify as
151  </p>  </p>
152    
153  <p>  <p>
154    Whether a change constitutes an improvement is a subjective matter.
155    If your right to modify a program is limited, in substance, to changes that
156    someone else considers an improvement, that program is not free.
157    </p>
158    
159    <h4>The freedom to redistribute if you wish: basic requirements</h4>
160    
161    <p>Freedom to distribute (freedoms 2 and 3) means you are free to
162    redistribute copies, either with or without modifications, either
163    gratis or charging a fee for distribution, to
164    <a href="#exportcontrol">anyone anywhere</a>.  Being free to do these
165    things means (among other things) that you do not have to ask or pay
166    for permission to do so.
167    </p>
168    
169    <p>
170    You should also have the freedom to make modifications and use them
171    privately in your own work or play, without even mentioning that they
172    exist.  If you do publish your changes, you should not be required to
173    notify anyone in particular, or in any particular way.
174    </p>
175    
176    <p>
177  Freedom 3 includes the freedom to release your modified versions  Freedom 3 includes the freedom to release your modified versions
178  as free software.  A free license may also permit other ways of  as free software.  A free license may also permit other ways of
179  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 183  as a free license.
183  </p>  </p>
184    
185  <p>  <p>
186  In order for these freedoms to be real, they must be permanent and  The freedom to redistribute copies must include binary or executable
187  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
188  software has the power to revoke the license, or retroactively change  unmodified versions.  (Distributing programs in runnable form is necessary
189  its terms, without your doing anything wrong to give cause, the  for conveniently installable free operating systems.)  It is OK if there
190  software is not free.  is no way to produce a binary or executable form for a certain program
191    (since some languages don't support that feature), but you must have the
192    freedom to redistribute such forms should you find or develop a way to
193    make them.
194  </p>  </p>
195    
196    <h4>Copyleft</h4>
197    
198  <p>  <p>
199  However, certain kinds of rules about the manner of distributing free  Certain kinds of rules about the manner of distributing free
200  software are acceptable, when they don't conflict with the central  software are acceptable, when they don't conflict with the central
201  freedoms.  For example, copyleft (very simply stated) is the rule that  freedoms.  For example, <a href="/copyleft/copyleft.html">copyleft</a>
202  when redistributing the program, you cannot add restrictions to deny  (very simply stated) is the rule that when redistributing the program,
203  other people the central freedoms.  This rule does not conflict with  you cannot add restrictions to deny other people the central freedoms.
204  the central freedoms; rather it protects them.  This rule does not conflict with the central freedoms; rather it
205    protects them.
206  </p>  </p>
207    
208  <p>  <p>
209  &ldquo;Free software&rdquo; does not mean &ldquo;noncommercial.&rdquo;  A free  In the GNU project, we use copyleft to protect the four freedoms
210  program must be available for commercial use, commercial development,  legally for everyone.  We believe there are important reasons why
211  and commercial distribution.  Commercial development of free software  <a href="/philosophy/pragmatic.html">it is better to use
212  is no longer unusual; such free commercial software is very important.  copyleft</a>.  However,
213  You may have paid money to get copies of free software, or you may have  <a href="/philosophy/categories.html#Non-CopyleftedFreeSoftware">
214  obtained copies at no charge.  But regardless of how you got your copies,  noncopylefted free software</a> is ethical
215  you always have the freedom to copy and change the software, even to  too.  See <a href="/philosophy/categories.html">Categories of Free
216  <a href="/philosophy/selling.html">sell copies</a>.  Software</a> for a description of how &ldquo;free software,&rdquo;
217    &ldquo;copylefted software&rdquo; and other categories of software
218    relate to each other.
219  </p>  </p>
220    
221  <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>  
222    
223  <p>  <p>
224  However, rules about how to package a modified version are acceptable,  Rules about how to package a modified version are acceptable,
225  if they don't substantively limit your freedom to release modified  if they don't substantively limit your freedom to release modified
226  versions, or your freedom to make and use modified versions privately.  versions, or your freedom to make and use modified versions privately.
227  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 245  are also acceptable.
245  </p>  </p>
246    
247  <p>  <p>
248  In the GNU project, we use  A special issue arises when a license requires changing the name by
249  <a href="/copyleft/copyleft.html">copyleft</a>  which the program will be invoked from other programs.  That
250  to protect these freedoms legally for everyone.  But  effectively hampers you from releasing your changed version so that it
251  <a href="/philosophy/categories.html#Non-CopyleftedFreeSoftware">noncopylefted  can replace the original when invoked by those other programs.  This
252  free software</a> also exists.  We believe there are important reasons why  sort of requirement is acceptable only if there's a suitable aliasing
253  <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
254  but if your program is noncopylefted free software, it is still basically  alias for the modified version.</p>
255  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.)  
256  </p>  <h4>Export regulations</h4>
257    
258  <p>  <p>
259  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 263  eliminate or override these restrictions
263  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
264  way, the restrictions will not affect activities and people outside the  way, the restrictions will not affect activities and people outside the
265  jurisdictions of these governments.  Thus, free software licenses  jurisdictions of these governments.  Thus, free software licenses
266  must not require obedience to any export regulations as a condition of  must not require obedience to any nontrivial export regulations as a
267  any of the essential freedoms.  condition of exercising any of the essential freedoms.
268    </p>
269    
270    <p>
271    Merely mentioning the existence of export regulations, without making
272    them a condition of the license itself, is acceptable since it does
273    not restrict users.  If an export regulation is actually trivial for
274    free software, then requiring it as a condition is not an actual
275    problem; however, it is a potential problem, since a later change in
276    export law could make the requirement nontrivial and thus render the
277    software nonfree.
278    </p>
279    
280    <h4>Legal considerations</h4>
281    
282    <p>
283    In order for these freedoms to be real, they must be permanent and
284    irrevocable as long as you do nothing wrong; if the developer of the
285    software has the power to revoke the license, or retroactively add
286    restrictions to its terms, without your doing anything wrong to give
287    cause, the software is not free.
288  </p>  </p>
289    
290  <p>  <p>
291    A free license may not require compliance with the license of a
292    nonfree program.  Thus, for instance, if a license requires you to
293    comply with the licenses of &ldquo;all the programs you use&rdquo;, in
294    the case of a user that runs nonfree programs this would require
295    compliance with the licenses of those nonfree programs; that makes the
296    license nonfree.
297    </p>
298    
299    <p>
300    It is acceptable for a free license to specify which jurisdiction's
301    law applies, or where litigation must be done, or both.
302    </p>
303    
304    <h4>Contract-based licenses</h4>
305    
306    <p>
307  Most free software licenses are based on copyright, and there are limits  Most free software licenses are based on copyright, and there are limits
308  on what kinds of requirements can be imposed through copyright.  If a  on what kinds of requirements can be imposed through copyright.  If a
309  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 322  legitimate, we will have to think about
322  it is nonfree.  it is nonfree.
323  </p>  </p>
324    
325    <h4>Use the right words when talking about free software</h4>
326    
327  <p>  <p>
328  When talking about free software, it is best to avoid using terms  When talking about free software, it is best to avoid using terms
329  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 335  a list of proper <a href="/philosophy/fs
335  &ldquo;free software&rdquo;</a> into various languages.  &ldquo;free software&rdquo;</a> into various languages.
336  </p>  </p>
337    
338    <h4>How we interpret these criteria</h4>
339    
340  <p>  <p>
341  Finally, note that criteria such as those stated in this free software  Finally, note that criteria such as those stated in this free software
342  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 351  a conclusion about a new issue, we often
351  it easier to see why certain licenses do or don't qualify.  it easier to see why certain licenses do or don't qualify.
352  </p>  </p>
353    
354    <h4>Get help with free licenses</h4>
355    
356  <p>  <p>
357  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
358  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 375  help you can ensure that the license rea
375  and avoid various practical problems.  and avoid various practical problems.
376  </p>  </p>
377    
378  <h2 id="beyond-software">Beyond Software</h2>  <h3 id="beyond-software">Beyond Software</h3>
379    
380  <p>  <p>
381  <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 387  manuals are in effect part of the softwa
387  The same arguments also make sense for other kinds of works of  The same arguments also make sense for other kinds of works of
388  practical use &mdash; that is to say, works that embody useful knowledge,  practical use &mdash; that is to say, works that embody useful knowledge,
389  such as educational works and reference  such as educational works and reference
390  works.  <a href="http://wikipedia.org">Wikipedia</a> is the best known  works.  <a href="http://wikipedia.org">Wikipedia</a> is the best-known
391  example.  example.
392  </p>  </p>
393    
# Line 291  has been extended to a definition of <a Line 397  has been extended to a definition of <a
397  free cultural works</a> applicable to any kind of works.  free cultural works</a> applicable to any kind of works.
398  </p>  </p>
399    
400  <h2 id="open-source">Open Source?</h2>  <h3 id="open-source">Open Source?</h3>
401    
402  <p>  <p>
403  Another group has started using the term &ldquo;open source&rdquo; to mean  Another group uses the term &ldquo;open source&rdquo; to mean
404  something close (but not identical) to &ldquo;free software.&rdquo;  We  something close (but not identical) to &ldquo;free software&rdquo;.  We
405  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
406  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
407  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">
408  never refers to freedom</a>.  never refers to freedom</a>.
409  </p>  </p>
410    
411  <h2 id="History">History</h2>  <h3 id="History">History</h3>
412    
413  <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
414  clarify it.  Here we provide a list of those modifications, along with  the list of substantive changes, along with links to show exactly what
415  links to illustrate exactly what changed, so that others can review  was changed.</p>
 them if they like.</p>  
416    
417  <ul>  <ul>
418    
419    <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
420    1.141</a>: Clarify which code needs to be free.</li>
421    
422    <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
423    1.135</a>: Say each time that freedom 0 is the freedom to run the program
424    as you wish.</li>
425    
426    <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
427    1.134</a>: Freedom 0 is not a matter of the program's functionality.</li>
428    
429    <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
430    1.131</a>: A free license may not require compliance with a nonfree license
431    of another program.</li>
432    
433    <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
434    1.129</a>: State explicitly that choice of law and choice of forum
435    specifications are allowed.  (This was always our policy.)</li>
436    
437    <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
438    1.122</a>: An export control requirement is a real problem if the
439    requirement is nontrivial; otherwise it is only a potential problem.</li>
440    
441    <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
442    1.118</a>: Clarification: the issue is limits on your right to modify,
443    not on what modifications you have made.  And modifications are not limited
444    to &ldquo;improvements&rdquo;</li>
445    
446    <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
447    1.111</a>: Clarify 1.77 by saying that only
448    retroactive <em>restrictions</em> are unacceptable.  The copyright
449    holders can always grant additional <em>permission</em> for use of the
450    work by releasing the work in another way in parallel.</li>
451    
452    <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
453    1.105</a>: Reflect, in the brief statement of freedom 1, the point
454    (already stated in version 1.80) that it includes really using your modified
455    version for your computing.</li>
456    
457  <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
458  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>
459    
# Line 379  licenses.</li> Line 522  licenses.</li>
522    
523  <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
524  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
525  versions you distribute to the author.</li>  versions you distribute to previous developers on request.</li>
526    
527  </ul>  </ul>
528    
529  <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
530  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
531  Instead, they fix links, add translations, and so on.  If you would  interpretations.  For instance, the list does not include changes in
532  like to review the complete list of changes, you can do so on  asides, formatting, spelling, punctuation, or other parts of the page.
533  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
534    the <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb
535  interface</a>.</p>  interface</a>.</p>
536    
 </div>  
537    
538    </div><!-- for id="content", starts in the include above -->
539  <!--#include virtual="/server/footer.html" -->  <!--#include virtual="/server/footer.html" -->
   
540  <div id="footer">  <div id="footer">
541    <div class="unprintable">
542    
543  <p>  <p>Please send general FSF &amp; GNU inquiries to
 Please send FSF &amp; GNU inquiries to  
544  <a href="mailto:gnu@gnu.org">&lt;gnu@gnu.org&gt;</a>.  <a href="mailto:gnu@gnu.org">&lt;gnu@gnu.org&gt;</a>.
545  There are also <a href="/contact/">other ways to contact</a>  There are also <a href="/contact/">other ways to contact</a>
546  the FSF.  the FSF.  Broken links and other corrections or suggestions can be sent
547  <br />  to <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.</p>
548  Please send broken links and other corrections or suggestions to  
549  <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.  <p><!-- TRANSLATORS: Ignore the original text in this paragraph,
550  </p>          replace it with the translation of these two:
551    
552            We work hard and do our best to provide accurate, good quality
553            translations.  However, we are not exempt from imperfection.
554            Please send your comments and general suggestions in this regard
555            to <a href="mailto:web-translators@gnu.org">
556            &lt;web-translators@gnu.org&gt;</a>.</p>
557    
558            <p>For information on coordinating and submitting translations of
559            our web pages, see <a
560            href="/server/standards/README.translations.html">Translations
561            README</a>. -->
562    Please see the <a
563    href="/server/standards/README.translations.html">Translations
564    README</a> for information on coordinating and submitting translations
565    of this article.</p>
566    </div>
567    
568  <p>  <!-- Regarding copyright, in general, standalone pages (as opposed to
569  Please see the       files generated as part of manuals) on the GNU web server should
570  <a href="/server/standards/README.translations.html">Translations       be under CC BY-ND 4.0.  Please do NOT change or remove this
571  README</a> for information on coordinating and submitting       without talking with the webmasters or licensing team first.
572  translations of this article.       Please make sure the copyright date is consistent with the
573  </p>       document.  For web pages, it is ok to list just the latest year the
574         document was modified, or published.
575        
576         If you wish to list earlier years, that is ok too.
577         Either "2001, 2002, 2003" or "2001-2003" are ok for specifying
578         years, as long as each year in the range is in fact a copyrightable
579         year, i.e., a year in which the document was published (including
580         being publicly visible on the web or in a revision control system).
581        
582         There is more detail about copyright years in the GNU Maintainers
583         Information document, www.gnu.org/prep/maintain. -->
584    
585    <p>Copyright &copy; 1996, 2002, 2004-2007, 2009-2016
586    Free Software Foundation, Inc.</p>
587    
588    <p>This page is licensed under a <a rel="license"
589    href="http://creativecommons.org/licenses/by-nd/4.0/">Creative
590    Commons Attribution-NoDerivatives 4.0 International License</a>.</p>
591    
592  <p>  <!--#include virtual="/server/bottom-notes.html" -->
 Copyright &copy; 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004,  
 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.  
 </p>  
 <p>Verbatim copying and distribution of this entire article is  
 permitted in any medium without royalty provided this notice is  
 preserved.  
 </p>  
593    
594  <p>  <p class="unprintable">Updated:
 Updated:  
595  <!-- timestamp start -->  <!-- timestamp start -->
596  $Date$  $Date$
597  <!-- timestamp end -->  <!-- timestamp end -->
598  </p>  </p>
599  </div>  </div>
   
 <div id="translations">  
 <h4>Translations of this page</h4>  
   
 <!-- Please keep this list alphabetical by language code.  
      Comment what the language is for each type, i.e. de is German.  
      Write the language name in its own language (Deutsch) in the text.  
      If you add a new language here, please  
      advise web-translators@gnu.org and add it to  
       - /home/www/html/server/standards/README.translations.html  
       - one of the lists under the section "Translations Underway"  
       - if there is a translation team, you also have to add an alias  
       to mail.gnu.org:/com/mailer/aliases  
      Please also check you have the language code right; see:  
      http://www.loc.gov/standards/iso639-2/php/code_list.php  
      If the 2-letter ISO 639-1 code is not available,  
      use the 3-letter ISO 639-2.  
      Please use W3C normative character entities. -->  
   
 <ul class="translations-list">  
 <!-- Afrikaans -->  
 <li><a href="/philosophy/free-sw.af.html">Afrikaans</a>&nbsp;[af]</li>  
 <!-- Arabic -->  
 <li><a href="/philosophy/free-sw.ar.html">&#1575;&#1604;&#1593;&#1585;&#1576;&#1610;&#1577;</a>&nbsp;[ar]</li>  
 <!-- Azerbaijani -->  
 <li><a href="/philosophy/free-sw.az.html">Az&#x0259;rbaycanca</a>&nbsp;[az]</li>  
 <!-- Bulgarian -->  
 <li><a href="/philosophy/free-sw.bg.html">&#x431;&#x44A;&#x43B;&#x433;&#x430;&#x440;&#x441;&#x43A;&#x438;</a>&nbsp;[bg]</li>  
 <!-- Bengali -->  
 <li><a href="/philosophy/free-sw.bn.html">&#2476;&#2494;&#2434;&#2482;&#2494;</a>&nbsp;[bn]</li>  
 <!-- Bosnian -->  
 <li><a href="/philosophy/free-sw.bs.html">bosanski</a>&nbsp;[bs]</li>  
 <!-- Catalan -->  
 <li><a href="/philosophy/free-sw.ca.html">catal&#x00e0;</a>&nbsp;[ca]</li>  
 <!-- Czech -->  
 <li><a href="/philosophy/free-sw.cs.html">&#x010c;esky</a>&nbsp;[cs]</li>  
 <!-- Danish -->  
 <li><a href="/philosophy/free-sw.da.html">dansk</a>&nbsp;[da]</li>  
 <!-- German -->  
 <li><a href="/philosophy/free-sw.de.html">Deutsch</a>&nbsp;[de]</li>  
 <!-- Greek -->  
 <li><a href="/philosophy/free-sw.el.html">&#x03b5;&#x03bb;&#x03bb;&#x03b7;&#x03bd;&#x03b9;&#x03ba;&#x03ac;</a>&nbsp;[el]</li>  
 <!-- English -->  
 <li><a href="/philosophy/free-sw.html">English</a>&nbsp;[en]</li>  
 <!-- Esperanto -->  
 <li><a href="/philosophy/free-sw.eo.html">Esperanto</a>&nbsp;[eo]</li>  
 <!-- Spanish -->  
 <li><a href="/philosophy/free-sw.es.html">espa&#x00f1;ol</a>&nbsp;[es]</li>  
 <!-- Farsi (Persian) -->  
 <li><a href="/philosophy/free-sw.fa.html">&#x0641;&#x0627;&#x0631;&#x0633;&#x06cc;</a>&nbsp;[fa]</li>  
 <!-- French -->  
 <li><a href="/philosophy/free-sw.fr.html">fran&#x00e7;ais</a>&nbsp;[fr]</li>  
 <!-- Galician -->  
 <li><a href="/philosophy/free-sw.gl.html">galego</a>&nbsp;[gl]</li>  
 <!-- Hebrew -->  
 <li><a href="/philosophy/free-sw.he.html">&#x05e2;&#x05d1;&#x05e8;&#x05d9;&#x05ea;</a>&nbsp;[he]</li>  
 <!-- Croatian -->  
 <li><a href="/philosophy/free-sw.hr.html">hrvatski</a>&nbsp;[hr]</li>  
 <!-- Hungarian -->  
 <li><a href="/philosophy/free-sw.hu.html">magyar</a>&nbsp;[hu]</li>  
 <!-- Indonesian -->  
 <li><a href="/philosophy/free-sw.id.html">Bahasa Indonesia</a>&nbsp;[id]</li>  
 <!-- Italian -->  
 <li><a href="/philosophy/free-sw.it.html">italiano</a>&nbsp;[it]</li>  
 <!-- Japanese -->  
 <li><a href="/philosophy/free-sw.ja.html">&#x65e5;&#x672c;&#x8a9e;</a>&nbsp;[ja]</li>  
 <!-- Korean -->  
 <li><a href="/philosophy/free-sw.ko.html">&#xd55c;&#xad6d;&#xc5b4;</a>&nbsp;[ko]</li>  
 <!-- Norwegian BokmÃ¥l -->  
 <li><a href="/philosophy/free-sw.nb.html">norsk (bokm&aring;l)</a>&nbsp;[nb]</li>  
 <!-- Dutch -->  
 <li><a href="/philosophy/free-sw.nl.html">Nederlands</a>&nbsp;[nl]</li>  
 <!-- Polish -->  
 <li><a href="/philosophy/free-sw.pl.html">polski</a>&nbsp;[pl]</li>  
 <!-- Brazilian Portuguese -->  
 <li><a href="/philosophy/free-sw.pt-br.html">portugu&#x0ea;s do Brasil</a>&nbsp;[pt-br]</li>  
 <!-- Romanian -->  
 <li><a href="/philosophy/free-sw.ro.html">rom&#x00e2;n&#x0103;</a>&nbsp;[ro]</li>  
 <!-- Russian -->  
 <li><a href="/philosophy/free-sw.ru.html">&#x0440;&#x0443;&#x0441;&#x0441;&#x043a;&#x0438;&#x0439;</a>&nbsp;[ru]</li>  
 <!-- Slovak -->  
 <li><a href="/philosophy/free-sw.sk.html">sloven&#269;ina</a>&nbsp;[sk]</li>  
 <!--- Slovenian -->  
 <li><a href="/philosophy/free-sw.sl.html">sloven&scaron;&#269;ina</a>&nbsp;[sl]</li>  
 <!-- Serbian -->  
 <li><a href="/philosophy/free-sw.sr.html">&#x0441;&#x0440;&#x043f;&#x0441;&#x043a;&#x0438;</a>&nbsp;[sr]</li>  
 <!-- Swedish -->  
 <li><a href="/philosophy/free-sw.sv.html">svenska</a>&nbsp;[sv]</li>  
 <!-- Tamil -->  
 <li><a href="/philosophy/free-sw.ta.html">&#2980;&#2990;&#3007;&#2996;&#3021;</a>&nbsp;[ta]</li>  
 <!-- Tagalog -->  
 <li><a href="/philosophy/free-sw.tl.html">Tagalog</a>&nbsp;[tl]</li>  
 <!-- Turkish -->  
 <li><a href="/philosophy/free-sw.tr.html">T&#x00fc;rk&#x00e7;e</a>&nbsp;[tr]</li>  
 <!-- Chinese (Simplified) -->  
 <li><a href="/philosophy/free-sw.zh-cn.html">&#x7b80;&#x4f53;&#x4e2d;&#x6587;</a>&nbsp;[zh-cn]</li>  
 <!-- Chinese (Traditional) -->  
 <li><a href="/philosophy/free-sw.zh-tw.html">&#x7e41;&#x9ad4;&#x4e2d;&#x6587;</a>&nbsp;[zh-tw]</li>  
 </ul>  
600  </div>  </div>
   
 </div>  
   
601  </body>  </body>
602  </html>  </html>

Legend:
Removed from v.1.102  
changed lines
  Added in v.1.150

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26