# root/licence/agpl-3.0.tex

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Licence Affero GPL.

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1\documentclass[11pt]{article}
2
4\date{Version 3, 19 November 2007}
5
6\begin{document}
7\maketitle
8
9\begin{center}
10{\parindent 0in
11
13
14\bigskip
15Everyone is permitted to copy and distribute verbatim copies of this
16
17license document, but changing it is not allowed.}
18
19\end{center}
20
21\renewcommand{\abstractname}{Preamble}
22\begin{abstract}
24for software and other kinds of works, specifically designed to ensure
25cooperation with the community in the case of network server software.
26
27The licenses for most software and other practical works are
28designed to take away your freedom to share and change the works.  By
29contrast, our General Public Licenses are intended to guarantee your
30freedom to share and change all versions of a program--to make sure it
31remains free software for all its users.
32
33When we speak of free software, we are referring to freedom, not
34price.  Our General Public Licenses are designed to make sure that you
35have the freedom to distribute copies of free software (and charge for
36them if you wish), that you receive source code or can get it if you
37want it, that you can change the software or use pieces of it in new
38free programs, and that you know you can do these things.
39
41with two steps: (1) assert copyright on the software, and (2) offer
42you this License which gives you legal permission to copy, distribute
43and/or modify the software.
44
45A secondary benefit of defending all users' freedom is that
46improvements made in alternate versions of the program, if they
48incorporate.  Many developers of free software are heartened and
49encouraged by the resulting cooperation.  However, in the case of
50software used on network servers, this result may fail to come about.
51The GNU General Public License permits making a modified version and
52letting the public access it on a server without ever releasing its
53source code to the public.
54
55The GNU Affero General Public License is designed specifically to
56ensure that, in such cases, the modified source code becomes available
57to the community.  It requires the operator of a network server to
58provide the source code of the modified version running there to the
59users of that server.  Therefore, public use of a modified version, on
61code of the modified version.
62
65a different license, not a version of the Affero GPL, but Affero has
66released a new version of the Affero GPL which permits relicensing under
68
69The precise terms and conditions for copying, distribution and
70modification follow.
71\end{abstract}
72
73\begin{center}
74{\Large \sc Terms and Conditions}
75\end{center}
76
77
78\begin{enumerate}
79
81
82\item Definitions.
83
84This License'' refers to version 3 of the GNU Affero General Public License.
85
86Copyright'' also means copyright-like laws that apply to other kinds of
88
89The Program'' refers to any copyrightable work licensed under this
90License.  Each licensee is addressed as you''.  Licensees'' and
91recipients'' may be individuals or organizations.
92
93To modify'' a work means to copy from or adapt all or part of the work
94in a fashion requiring copyright permission, other than the making of an
95exact copy.  The resulting work is called a modified version'' of the
96earlier work or a work based on'' the earlier work.
97
98A covered work'' means either the unmodified Program or a work based
99on the Program.
100
101To propagate'' a work means to do anything with it that, without
102permission, would make you directly or secondarily liable for
103infringement under applicable copyright law, except executing it on a
104computer or modifying a private copy.  Propagation includes copying,
105distribution (with or without modification), making available to the
106public, and in some countries other activities as well.
107
108To convey'' a work means any kind of propagation that enables other
109parties to make or receive copies.  Mere interaction with a user through
110a computer network, with no transfer of a copy, is not conveying.
111
112An interactive user interface displays Appropriate Legal Notices''
113to the extent that it includes a convenient and prominently visible
114feature that (1) displays an appropriate copyright notice, and (2)
115tells the user that there is no warranty for the work (except to the
116extent that warranties are provided), that licensees may convey the
117work under this License, and how to view a copy of this License.  If
118the interface presents a list of user commands or options, such as a
119menu, a prominent item in the list meets this criterion.
120
121\item Source Code.
122
123The source code'' for a work means the preferred form of the work
124for making modifications to it.  Object code'' means any non-source
125form of a work.
126
127A Standard Interface'' means an interface that either is an official
128standard defined by a recognized standards body, or, in the case of
129interfaces specified for a particular programming language, one that
130is widely used among developers working in that language.
131
132The System Libraries'' of an executable work include anything, other
133than the work as a whole, that (a) is included in the normal form of
134packaging a Major Component, but which is not part of that Major
135Component, and (b) serves only to enable use of the work with that
136Major Component, or to implement a Standard Interface for which an
137implementation is available to the public in source code form.  A
138Major Component'', in this context, means a major essential component
139(kernel, window system, and so on) of the specific operating system
140(if any) on which the executable work runs, or a compiler used to
141produce the work, or an object code interpreter used to run it.
142
143The Corresponding Source'' for a work in object code form means all
144the source code needed to generate, install, and (for an executable
145work) run the object code and to modify the work, including scripts to
146control those activities.  However, it does not include the work's
147System Libraries, or general-purpose tools or generally available free
148programs which are used unmodified in performing those activities but
149which are not part of the work.  For example, Corresponding Source
150includes interface definition files associated with source files for
151the work, and the source code for shared libraries and dynamically
152linked subprograms that the work is specifically designed to require,
153such as by intimate data communication or control flow between those
154subprograms and other parts of the work.
155
156The Corresponding Source need not include anything that users
157can regenerate automatically from other parts of the Corresponding
158Source.
159
160The Corresponding Source for a work in source code form is that
161same work.
162
163\item Basic Permissions.
164
165All rights granted under this License are granted for the term of
166copyright on the Program, and are irrevocable provided the stated
168permission to run the unmodified Program.  The output from running a
169covered work is covered by this License only if the output, given its
170content, constitutes a covered work.  This License acknowledges your
171rights of fair use or other equivalent, as provided by copyright law.
172
173You may make, run and propagate covered works that you do not
175in force.  You may convey covered works to others for the sole purpose
176of having them make modifications exclusively for you, or provide you
177with facilities for running those works, provided that you comply with
178the terms of this License in conveying all material for which you do
179not control copyright.  Those thus making or running the covered works
180for you must do so exclusively on your behalf, under your direction
181and control, on terms that prohibit them from making any copies of
183
184Conveying under any other circumstances is permitted solely under
185the conditions stated below.  Sublicensing is not allowed; section 10
186makes it unnecessary.
187
188\item Protecting Users' Legal Rights From Anti-Circumvention Law.
189
190No covered work shall be deemed part of an effective technological
191measure under any applicable law fulfilling obligations under article
19211 of the WIPO copyright treaty adopted on 20 December 1996, or
193similar laws prohibiting or restricting circumvention of such
194measures.
195
196When you convey a covered work, you waive any legal power to forbid
197circumvention of technological measures to the extent such circumvention
198is effected by exercising rights under this License with respect to
199the covered work, and you disclaim any intention to limit operation or
200modification of the work as a means of enforcing, against the work's
201users, your or third parties' legal rights to forbid circumvention of
202technological measures.
203
204\item Conveying Verbatim Copies.
205
206You may convey verbatim copies of the Program's source code as you
207receive it, in any medium, provided that you conspicuously and
208appropriately publish on each copy an appropriate copyright notice;
209keep intact all notices stating that this License and any
210non-permissive terms added in accord with section 7 apply to the code;
211keep intact all notices of the absence of any warranty; and give all
212recipients a copy of this License along with the Program.
213
214You may charge any price or no price for each copy that you convey,
215and you may offer support or warranty protection for a fee.
216
217\item Conveying Modified Source Versions.
218
219You may convey a work based on the Program, or the modifications to
220produce it from the Program, in the form of source code under the
221terms of section 4, provided that you also meet all of these conditions:
222  \begin{enumerate}
223  \item The work must carry prominent notices stating that you modified
224  it, and giving a relevant date.
225
226  \item The work must carry prominent notices stating that it is
228  7.  This requirement modifies the requirement in section 4 to
229  keep intact all notices''.
230
231  \item You must license the entire work, as a whole, under this
232  License to anyone who comes into possession of a copy.  This
233  License will therefore apply, along with any applicable section 7
234  additional terms, to the whole of the work, and all its parts,
235  regardless of how they are packaged.  This License gives no
236  permission to license the work in any other way, but it does not
237  invalidate such permission if you have separately received it.
238
239  \item If the work has interactive user interfaces, each must display
240  Appropriate Legal Notices; however, if the Program has interactive
241  interfaces that do not display Appropriate Legal Notices, your
242  work need not make them do so.
243\end{enumerate}
244A compilation of a covered work with other separate and independent
245works, which are not by their nature extensions of the covered work,
246and which are not combined with it such as to form a larger program,
247in or on a volume of a storage or distribution medium, is called an
248aggregate'' if the compilation and its resulting copyright are not
249used to limit the access or legal rights of the compilation's users
250beyond what the individual works permit.  Inclusion of a covered work
251in an aggregate does not cause this License to apply to the other
252parts of the aggregate.
253
254\item Conveying Non-Source Forms.
255
256You may convey a covered work in object code form under the terms
257of sections 4 and 5, provided that you also convey the
259in one of these ways:
260  \begin{enumerate}
261  \item Convey the object code in, or embodied in, a physical product
262  (including a physical distribution medium), accompanied by the
263  Corresponding Source fixed on a durable physical medium
264  customarily used for software interchange.
265
266  \item Convey the object code in, or embodied in, a physical product
267  (including a physical distribution medium), accompanied by a
268  written offer, valid for at least three years and valid for as
269  long as you offer spare parts or customer support for that product
270  model, to give anyone who possesses the object code either (1) a
271  copy of the Corresponding Source for all the software in the
272  product that is covered by this License, on a durable physical
273  medium customarily used for software interchange, for a price no
274  more than your reasonable cost of physically performing this
276  Corresponding Source from a network server at no charge.
277
278  \item Convey individual copies of the object code with a copy of the
279  written offer to provide the Corresponding Source.  This
280  alternative is allowed only occasionally and noncommercially, and
281  only if you received the object code with such an offer, in accord
282  with subsection 6b.
283
284  \item Convey the object code by offering access from a designated
285  place (gratis or for a charge), and offer equivalent access to the
286  Corresponding Source in the same way through the same place at no
287  further charge.  You need not require recipients to copy the
288  Corresponding Source along with the object code.  If the place to
289  copy the object code is a network server, the Corresponding Source
290  may be on a different server (operated by you or a third party)
291  that supports equivalent copying facilities, provided you maintain
292  clear directions next to the object code saying where to find the
293  Corresponding Source.  Regardless of what server hosts the
294  Corresponding Source, you remain obligated to ensure that it is
295  available for as long as needed to satisfy these requirements.
296
297  \item Convey the object code using peer-to-peer transmission, provided
298  you inform other peers where the object code and Corresponding
299  Source of the work are being offered to the general public at no
300  charge under subsection 6d.
301  \end{enumerate}
302
303A separable portion of the object code, whose source code is excluded
304from the Corresponding Source as a System Library, need not be
305included in conveying the object code work.
306
307A User Product'' is either (1) a consumer product'', which means any
308tangible personal property which is normally used for personal, family,
309or household purposes, or (2) anything designed or sold for incorporation
310into a dwelling.  In determining whether a product is a consumer product,
311doubtful cases shall be resolved in favor of coverage.  For a particular
312product received by a particular user, normally used'' refers to a
313typical or common use of that class of product, regardless of the status
314of the particular user or of the way in which the particular user
315actually uses, or expects or is expected to use, the product.  A product
316is a consumer product regardless of whether the product has substantial
317commercial, industrial or non-consumer uses, unless such uses represent
318the only significant mode of use of the product.
319
320Installation Information'' for a User Product means any methods,
321procedures, authorization keys, or other information required to install
322and execute modified versions of a covered work in that User Product from
323a modified version of its Corresponding Source.  The information must
324suffice to ensure that the continued functioning of the modified object
325code is in no case prevented or interfered with solely because
327
328If you convey an object code work under this section in, or with, or
329specifically for use in, a User Product, and the conveying occurs as
330part of a transaction in which the right of possession and use of the
331User Product is transferred to the recipient in perpetuity or for a
332fixed term (regardless of how the transaction is characterized), the
333Corresponding Source conveyed under this section must be accompanied
334by the Installation Information.  But this requirement does not apply
335if neither you nor any third party retains the ability to install
336modified object code on the User Product (for example, the work has
337been installed in ROM).
338
339The requirement to provide Installation Information does not include a
340requirement to continue to provide support service, warranty, or updates
341for a work that has been modified or installed by the recipient, or for
342the User Product in which it has been modified or installed.  Access to a
343network may be denied when the modification itself materially and
344adversely affects the operation of the network or violates the rules and
345protocols for communication across the network.
346
347Corresponding Source conveyed, and Installation Information provided,
348in accord with this section must be in a format that is publicly
349documented (and with an implementation available to the public in
350source code form), and must require no special password or key for
352
354
355Additional permissions'' are terms that supplement the terms of this
356License by making exceptions from one or more of its conditions.
357Additional permissions that are applicable to the entire Program shall
358be treated as though they were included in this License, to the extent
359that they are valid under applicable law.  If additional permissions
360apply only to part of the Program, that part may be used separately
361under those permissions, but the entire Program remains governed by
363
364When you convey a copy of a covered work, you may at your option
365remove any additional permissions from that copy, or from any part of
366it.  (Additional permissions may be written to require their own
367removal in certain cases when you modify the work.)  You may place
369for which you have or can give appropriate copyright permission.
370
371Notwithstanding any other provision of this License, for material you
372add to a covered work, you may (if authorized by the copyright holders of
373that material) supplement the terms of this License with terms:
374  \begin{enumerate}
375  \item Disclaiming warranty or limiting liability differently from the
376  terms of sections 15 and 16 of this License; or
377
378  \item Requiring preservation of specified reasonable legal notices or
379  author attributions in that material or in the Appropriate Legal
380  Notices displayed by works containing it; or
381
382  \item Prohibiting misrepresentation of the origin of that material, or
383  requiring that modified versions of such material be marked in
384  reasonable ways as different from the original version; or
385
386  \item Limiting the use for publicity purposes of names of licensors or
387  authors of the material; or
388
389  \item Declining to grant rights under trademark law for use of some
391
392  \item Requiring indemnification of licensors and authors of that
393  material by anyone who conveys the material (or modified versions of
394  it) with contractual assumptions of liability to the recipient, for
395  any liability that these contractual assumptions directly impose on
396  those licensors and authors.
397  \end{enumerate}
398
399All other non-permissive additional terms are considered further
400restrictions'' within the meaning of section 10.  If the Program as you
401received it, or any part of it, contains a notice stating that it is
402governed by this License along with a term that is a further
403restriction, you may remove that term.  If a license document contains
404a further restriction but permits relicensing or conveying under this
405License, you may add to a covered work material governed by the terms
406of that license document, provided that the further restriction does
407not survive such relicensing or conveying.
408
409If you add terms to a covered work in accord with this section, you
410must place, in the relevant source files, a statement of the
411additional terms that apply to those files, or a notice indicating
412where to find the applicable terms.
413
414Additional terms, permissive or non-permissive, may be stated in the
415form of a separately written license, or stated as exceptions;
416the above requirements apply either way.
417
418\item Termination.
419
420You may not propagate or modify a covered work except as expressly
421provided under this License.  Any attempt otherwise to propagate or
422modify it is void, and will automatically terminate your rights under
424paragraph of section 11).
425
426However, if you cease all violation of this License, then your
428provisionally, unless and until the copyright holder explicitly and
430holder fails to notify you of the violation by some reasonable means
431prior to 60 days after the cessation.
432
434reinstated permanently if the copyright holder notifies you of the
435violation by some reasonable means, this is the first time you have
436received notice of violation of this License (for any work) from that
437copyright holder, and you cure the violation prior to 30 days after
439
440Termination of your rights under this section does not terminate the
441licenses of parties who have received copies or rights from you under
443reinstated, you do not qualify to receive new licenses for the same
444material under section 10.
445
446\item Acceptance Not Required for Having Copies.
447
448You are not required to accept this License in order to receive or
449run a copy of the Program.  Ancillary propagation of a covered work
450occurring solely as a consequence of using peer-to-peer transmission
451to receive a copy likewise does not require acceptance.  However,
452nothing other than this License grants you permission to propagate or
453modify any covered work.  These actions infringe copyright if you do
454not accept this License.  Therefore, by modifying or propagating a
455covered work, you indicate your acceptance of this License to do so.
456
457\item Automatic Licensing of Downstream Recipients.
458
459Each time you convey a covered work, the recipient automatically
461propagate that work, subject to this License.  You are not responsible
462for enforcing compliance by third parties with this License.
463
464An entity transaction'' is a transaction transferring control of an
465organization, or substantially all assets of one, or subdividing an
466organization, or merging organizations.  If propagation of a covered
467work results from an entity transaction, each party to that
469licenses to the work the party's predecessor in interest had or could
470give under the previous paragraph, plus a right to possession of the
471Corresponding Source of the work from the predecessor in interest, if
472the predecessor has it or can get it with reasonable efforts.
473
474You may not impose any further restrictions on the exercise of the
475rights granted or affirmed under this License.  For example, you may
476not impose a license fee, royalty, or other charge for exercise of
477rights granted under this License, and you may not initiate litigation
478(including a cross-claim or counterclaim in a lawsuit) alleging that
479any patent claim is infringed by making, using, selling, offering for
480sale, or importing the Program or any portion of it.
481
482\item Patents.
483
484A contributor'' is a copyright holder who authorizes use under this
485License of the Program or a work on which the Program is based.  The
486work thus licensed is called the contributor's contributor version''.
487
488A contributor's essential patent claims'' are all patent claims
489owned or controlled by the contributor, whether already acquired or
490hereafter acquired, that would be infringed by some manner, permitted
491by this License, of making, using, or selling its contributor version,
492but do not include claims that would be infringed only as a
493consequence of further modification of the contributor version.  For
494purposes of this definition, control'' includes the right to grant
495patent sublicenses in a manner consistent with the requirements of
497
498Each contributor grants you a non-exclusive, worldwide, royalty-free
499patent license under the contributor's essential patent claims, to
500make, use, sell, offer for sale, import and otherwise run, modify and
501propagate the contents of its contributor version.
502
503In the following three paragraphs, a patent license'' is any express
504agreement or commitment, however denominated, not to enforce a patent
505(such as an express permission to practice a patent or covenant not to
506sue for patent infringement).  To grant'' such a patent license to a
507party means to make such an agreement or commitment not to enforce a
508patent against the party.
509
510If you convey a covered work, knowingly relying on a patent license,
511and the Corresponding Source of the work is not available for anyone
512to copy, free of charge and under the terms of this License, through a
513publicly available network server or other readily accessible means,
514then you must either (1) cause the Corresponding Source to be so
515available, or (2) arrange to deprive yourself of the benefit of the
516patent license for this particular work, or (3) arrange, in a manner
517consistent with the requirements of this License, to extend the patent
518license to downstream recipients.  Knowingly relying'' means you have
520covered work in a country, or your recipient's use of the covered work
521in a country, would infringe one or more identifiable patents in that
522country that you have reason to believe are valid.
523
524If, pursuant to or in connection with a single transaction or
525arrangement, you convey, or propagate by procuring conveyance of, a
526covered work, and grant a patent license to some of the parties
527receiving the covered work authorizing them to use, propagate, modify
528or convey a specific copy of the covered work, then the patent license
529you grant is automatically extended to all recipients of the covered
530work and works based on it.
531
532A patent license is discriminatory'' if it does not include within
533the scope of its coverage, prohibits the exercise of, or is
534conditioned on the non-exercise of one or more of the rights that are
535specifically granted under this License.  You may not convey a covered
536work if you are a party to an arrangement with a third party that is
537in the business of distributing software, under which you make payment
538to the third party based on the extent of your activity of conveying
539the work, and under which the third party grants, to any of the
540parties who would receive the covered work from you, a discriminatory
541patent license (a) in connection with copies of the covered work
542conveyed by you (or copies made from those copies), or (b) primarily
543for and in connection with specific products or compilations that
544contain the covered work, unless you entered into that arrangement,
545or that patent license was granted, prior to 28 March 2007.
546
547Nothing in this License shall be construed as excluding or limiting
548any implied license or other defenses to infringement that may
549otherwise be available to you under applicable patent law.
550
551\item No Surrender of Others' Freedom.
552
553If conditions are imposed on you (whether by court order, agreement or
555excuse you from the conditions of this License.  If you cannot convey a
556covered work so as to satisfy simultaneously your obligations under this
557License and any other pertinent obligations, then as a consequence you may
558not convey it at all.  For example, if you agree to terms that obligate you
559to collect a royalty for further conveying from those to whom you convey
560the Program, the only way you could satisfy both those terms and this
561License would be to refrain entirely from conveying the Program.
562
563\item Remote Network Interaction; Use with the GNU General Public License.
564
565Notwithstanding any other provision of this License, if you modify the
566Program, your modified version must prominently offer all users interacting
567with it remotely through a computer network (if your version supports such
568interaction) an opportunity to receive the Corresponding Source of your
570server at no charge, through some standard or customary means of
571facilitating copying of software.  This Corresponding Source shall include
572the Corresponding Source for any work covered by version 3 of the GNU
573General Public License that is incorporated pursuant to the following
574paragraph.
575
576Notwithstanding any other provision of this License, you have permission to
577link or combine any covered work with a work licensed under version 3 of
578the GNU General Public License into a single combined work, and to convey
579the resulting work.  The terms of this License will continue to apply to
580the part which is the covered work, but the work with which it is combined
581will remain governed by version 3 of the GNU General Public License.
582
583\item Revised Versions of this License.
584
585The Free Software Foundation may publish revised and/or new versions of
586the GNU Affero General Public License from time to time.  Such new versions will
587be similar in spirit to the present version, but may differ in detail to
589
590Each version is given a distinguishing version number.  If the
591Program specifies that a certain numbered version of the GNU Affero General
592Public License or any later version'' applies to it, you have the
593option of following the terms and conditions either of that numbered
595Foundation.  If the Program does not specify a version number of the
596GNU Affero General Public License, you may choose any version ever published
597by the Free Software Foundation.
598
599If the Program specifies that a proxy can decide which future
600versions of the GNU Affero General Public License can be used, that proxy's
601public statement of acceptance of a version permanently authorizes you
602to choose that version for the Program.
603
605permissions.  However, no additional obligations are imposed on any
607later version.
608
609\item Disclaimer of Warranty.
610
611\begin{sloppypar}
612 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
613 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE
614 COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM AS IS''
615 WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
616 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
617 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE
618 RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
619 SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
620 NECESSARY SERVICING, REPAIR OR CORRECTION.
621\end{sloppypar}
622
623\item Limitation of Liability.
624
625 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
626 WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
627 AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
628 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
629 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
630 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
631 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE
632 OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
633 HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
634 DAMAGES.
635
636\item Interpretation of Sections 15 and 16.
637
638If the disclaimer of warranty and limitation of liability provided
639above cannot be given local legal effect according to their terms,
640reviewing courts shall apply local law that most closely approximates
641an absolute waiver of all civil liability in connection with the
642Program, unless a warranty or assumption of liability accompanies a
643copy of the Program in return for a fee.
644
645\begin{center}
646{\Large\sc End of Terms and Conditions}
647
648\bigskip
649How to Apply These Terms to Your New Programs
650\end{center}
651
652If you develop a new program, and you want it to be of the greatest
653possible use to the public, the best way to achieve this is to make it
654free software which everyone can redistribute and change under these terms.
655
656To do so, attach the following notices to the program.  It is safest
657to attach them to the start of each source file to most effectively
658state the exclusion of warranty; and each file should have at least
659the copyright'' line and a pointer to where the full notice is found.
660
661{\footnotesize
662\begin{verbatim}
663<one line to give the program's name and a brief idea of what it does.>
664
665Copyright (C) <textyear>  <name of author>
666
667This program is free software: you can redistribute it and/or modify
669the Free Software Foundation, either version 3 of the License, or
670(at your option) any later version.
671
672This program is distributed in the hope that it will be useful,
673but WITHOUT ANY WARRANTY; without even the implied warranty of
674MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
675GNU Affero General Public License for more details.
676
677You should have received a copy of the GNU Affero General Public License
678along with this program.  If not, see <http://www.gnu.org/licenses/>.
679\end{verbatim}
680}
681
682Also add information on how to contact you by electronic and paper mail.
683
684If your software can interact with users remotely through a computer
685network, you should also make sure that it provides a way for users to
686get its source.  For example, if your program is a web application, its
687interface could display a Source'' link that leads users to an archive
688of the code.  There are many ways you could offer source, and different
689solutions will be better for different programs; see section 13 for the
690specific requirements.
691
692You should also get your employer (if you work as a programmer) or
693school, if any, to sign a copyright disclaimer'' for the program, if
694necessary.  For more information on this, and how to apply and follow