gpl - GNU General Public License
Copyright (c) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
The GNU General Public License is a free, copyleft license for software and
other kinds of works.
The licenses for most software and other practical works are designed to take
away your freedom to share and change the works. By contrast, the GNU General
Public License is intended to guarantee your freedom to share and change all
versions of a program--to make sure it remains free software for all its
users. We, the Free Software Foundation, use the GNU General Public License
for most of our software; it applies also to any other work released this way
by its authors. You can apply it to your programs, too.
When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for them if you wish), that you
receive source code or can get it if you want it, that you can change the
software or use pieces of it in new free programs, and that you know you can
do these things.
To protect your rights, we need to prevent others from denying you these rights
or asking you to surrender the rights. Therefore, you have certain
responsibilities if you distribute copies of the software, or if you modify
it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether gratis or for a
fee, you must pass on to the recipients the same freedoms that you received.
You must make sure that they, too, receive or can get the source code. And you
must show them these terms so they know their rights.
Developers that use the GNU GPL protect your rights with two steps: (1) assert
copyright on the software, and (2) offer you this License giving you legal
permission to copy, distribute and/or modify it.
For the developers' and authors' protection, the GPL clearly explains that there
is no warranty for this free software. For both users' and authors' sake, the
GPL requires that modified versions be marked as changed, so that their
problems will not be attributed erroneously to authors of previous versions.
Some devices are designed to deny users access to install or run modified
versions of the software inside them, although the manufacturer can do so.
This is fundamentally incompatible with the aim of protecting users' freedom
to change the software. The systematic pattern of such abuse occurs in the
area of products for individuals to use, which is precisely where it is most
unacceptable. Therefore, we have designed this version of the GPL to prohibit
the practice for those products. If such problems arise substantially in other
domains, we stand ready to extend this provision to those domains in future
versions of the GPL, as needed to protect the freedom of users.
Finally, every program is threatened constantly by software patents. States
should not allow patents to restrict development and use of software on
general-purpose computers, but in those that do, we wish to avoid the special
danger that patents applied to a free program could make it effectively
proprietary. To prevent this, the GPL assures that patents cannot be used to
render the program non-free.
The precise terms and conditions for copying, distribution and modification
follow.
- 0. Definitions.
- "This License" refers to version 3 of the GNU
General Public License.
"Copyright" also means copyright-like laws that apply to other
kinds of works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you".
"Licensees" and "recipients" may be individuals or
organizations.
To "modify" a work means to copy from or adapt all or part of the
work in a fashion requiring copyright permission, other than the making of
an exact copy. The resulting work is called a "modified version"
of the earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work
based on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for infringement
under applicable copyright law, except executing it on a computer or
modifying a private copy. Propagation includes copying, distribution (with
or without modification), making available to the public, and in some
countries other activities as well.
To "convey" a work means any kind of propagation that enables
other parties to make or receive copies. Mere interaction with a user
through a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2) tells
the user that there is no warranty for the work (except to the extent that
warranties are provided), that licensees may convey the work under this
License, and how to view a copy of this License. If the interface presents
a list of user commands or options, such as a menu, a prominent item in
the list meets this criterion.
- 1. Source Code.
- The "source code" for a work means the preferred
form of the work for making modifications to it. "Object code"
means any non-source form of a work.
A "Standard Interface" means an interface that either is an
official standard defined by a recognized standards body, or, in the case
of interfaces specified for a particular programming language, one that is
widely used among developers working in that language.
The "System Libraries" of an executable work include anything,
other than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that Major
Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential
component (kernel, window system, and so on) of the specific operating
system (if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means
all the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's System
Libraries, or general-purpose tools or generally available free programs
which are used unmodified in performing those activities but which are not
part of the work. For example, Corresponding Source includes interface
definition files associated with source files for the work, and the source
code for shared libraries and dynamically linked subprograms that the work
is specifically designed to require, such as by intimate data
communication or control flow between those subprograms and other parts of
the work.
The Corresponding Source need not include anything that users can regenerate
automatically from other parts of the Corresponding Source.
The Corresponding Source for a work in source code form is that same
work.
- 2. Basic Permissions.
- All rights granted under this License are granted for the
term of copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your rights
of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not convey,
without conditions so long as your license otherwise remains in force. You
may convey covered works to others for the sole purpose of having them
make modifications exclusively for you, or provide you with facilities for
running those works, provided that you comply with the terms of this
License in conveying all material for which you do not control copyright.
Those thus making or running the covered works for you must do so
exclusively on your behalf, under your direction and control, on terms
that prohibit them from making any copies of your copyrighted material
outside their relationship with you.
Conveying under any other circumstances is permitted solely under the
conditions stated below. Sublicensing is not allowed; section 10 makes it
unnecessary.
- 3. Protecting Users' Legal Rights From Anti-Circumvention
Law.
- No covered work shall be deemed part of an effective
technological measure under any applicable law fulfilling obligations
under article 11 of the WIPO copyright treaty adopted on 20 December 1996,
or similar laws prohibiting or restricting circumvention of such measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to the
covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
- 4. Conveying Verbatim Copies.
- You may convey verbatim copies of the Program's source code
as you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice; keep
intact all notices stating that this License and any non-permissive terms
added in accord with section 7 apply to the code; keep intact all notices
of the absence of any warranty; and give all recipients a copy of this
License along with the Program.
You may charge any price or no price for each copy that you convey, and you
may offer support or warranty protection for a fee.
- 5. Conveying Modified Source Versions.
- You may convey a work based on the Program, or the
modifications to produce it from the Program, in the form of source code
under the terms of section 4, provided that you also meet all of these
conditions:
- a.
- The work must carry prominent notices stating that you
modified it, and giving a relevant date.
- b.
- The work must carry prominent notices stating that it is
released under this License and any conditions added under section 7. This
requirement modifies the requirement in section 4 to "keep intact all
notices".
- c.
- You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This License will
therefore apply, along with any applicable section 7 additional terms, to
the whole of the work, and all its parts, regardless of how they are
packaged. This License gives no permission to license the work in any
other way, but it does not invalidate such permission if you have
separately received it.
- d.
- If the work has interactive user interfaces, each must
display Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your work need
not make them do so.
A compilation of a covered work with other separate and independent works, which
are not by their nature extensions of the covered work, and which are not
combined with it such as to form a larger program, in or on a volume of a
storage or distribution medium, is called an "aggregate" if the
compilation and its resulting copyright are not used to limit the access or
legal rights of the compilation's users beyond what the individual works
permit. Inclusion of a covered work in an aggregate does not cause this
License to apply to the other parts of the aggregate.
- 6. Conveying Non-Source Forms.
- You may convey a covered work in object code form under the
terms of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License, in
one of these ways:
- a.
- Convey the object code in, or embodied in, a physical
product (including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium customarily used
for software interchange.
- b.
- Convey the object code in, or embodied in, a physical
product (including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as long as you
offer spare parts or customer support for that product model, to give
anyone who possesses the object code either (1) a copy of the
Corresponding Source for all the software in the product that is covered
by this License, on a durable physical medium customarily used for
software interchange, for a price no more than your reasonable cost of
physically performing this conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
- c.
- Convey individual copies of the object code with a copy of
the written offer to provide the Corresponding Source. This alternative is
allowed only occasionally and noncommercially, and only if you received
the object code with such an offer, in accord with subsection 6b.
- d.
- Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no further
charge. You need not require recipients to copy the Corresponding Source
along with the object code. If the place to copy the object code is a
network server, the Corresponding Source may be on a different server
(operated by you or a third party) that supports equivalent copying
facilities, provided you maintain clear directions next to the object code
saying where to find the Corresponding Source. Regardless of what server
hosts the Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
- e.
- Convey the object code using peer-to-peer transmission,
provided you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no charge
under subsection 6d.
A separable portion of the object code, whose source code is excluded from the
Corresponding Source as a System Library, need not be included in conveying
the object code work.
A "User Product" is either (1) a "consumer product", which
means any tangible personal property which is normally used for personal,
family, or household purposes, or (2) anything designed or sold for
incorporation into a dwelling. In determining whether a product is a consumer
product, doubtful cases shall be resolved in favor of coverage. For a
particular product received by a particular user, "normally used"
refers to a typical or common use of that class of product, regardless of the
status of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product is a
consumer product regardless of whether the product has substantial commercial,
industrial or non-consumer uses, unless such uses represent the only
significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install and
execute modified versions of a covered work in that User Product from a
modified version of its Corresponding Source. The information must suffice to
ensure that the continued functioning of the modified object code is in no
case prevented or interfered with solely because modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as part of a
transaction in which the right of possession and use of the User Product is
transferred to the recipient in perpetuity or for a fixed term (regardless of
how the transaction is characterized), the Corresponding Source conveyed under
this section must be accompanied by the Installation Information. But this
requirement does not apply if neither you nor any third party retains the
ability to install modified object code on the User Product (for example, the
work has been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates for a
work that has been modified or installed by the recipient, or for the User
Product in which it has been modified or installed. Access to a network may be
denied when the modification itself materially and adversely affects the
operation of the network or violates the rules and protocols for communication
across the network.
Corresponding Source conveyed, and Installation Information provided, in accord
with this section must be in a format that is publicly documented (and with an
implementation available to the public in source code form), and must require
no special password or key for unpacking, reading or copying.
- 7. Additional Terms.
- "Additional permissions" are terms that
supplement the terms of this License by making exceptions from one or more
of its conditions. Additional permissions that are applicable to the
entire Program shall be treated as though they were included in this
License, to the extent that they are valid under applicable law. If
additional permissions apply only to part of the Program, that part may be
used separately under those permissions, but the entire Program remains
governed by this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option remove any
additional permissions from that copy, or from any part of it. (Additional
permissions may be written to require their own removal in certain cases
when you modify the work.) You may place additional permissions on
material, added by you to a covered work, for which you have or can give
appropriate copyright permission.
Notwithstanding any other provision of this License, for material you add to
a covered work, you may (if authorized by the copyright holders of that
material) supplement the terms of this License with terms:
- a.
- Disclaiming warranty or limiting liability differently from
the terms of sections 15 and 16 of this License; or
- b.
- Requiring preservation of specified reasonable legal
notices or author attributions in that material or in the Appropriate
Legal Notices displayed by works containing it; or
- c.
- Prohibiting misrepresentation of the origin of that
material, or requiring that modified versions of such material be marked
in reasonable ways as different from the original version; or
- d.
- Limiting the use for publicity purposes of names of
licensors or authors of the material; or
- e.
- Declining to grant rights under trademark law for use of
some trade names, trademarks, or service marks; or
- f.
- Requiring indemnification of licensors and authors of that
material by anyone who conveys the material (or modified versions of it)
with contractual assumptions of liability to the recipient, for any
liability that these contractual assumptions directly impose on those
licensors and authors.
All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10. If the Program as you
received it, or any part of it, contains a notice stating that it is governed
by this License along with a term that is a further restriction, you may
remove that term. If a license document contains a further restriction but
permits relicensing or conveying under this License, you may add to a covered
work material governed by the terms of that license document, provided that
the further restriction does not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you must place,
in the relevant source files, a statement of the additional terms that apply
to those files, or a notice indicating where to find the applicable terms.
Additional terms, permissive or non-permissive, may be stated in the form of a
separately written license, or stated as exceptions; the above requirements
apply either way.
- 8. Termination.
- You may not propagate or modify a covered work except as
expressly provided under this License. Any attempt otherwise to propagate
or modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11).
However, if you cease all violation of this License, then your license from
a particular copyright holder is reinstated (a) provisionally, unless and
until the copyright holder explicitly and finally terminates your license,
and (b) permanently, if the copyright holder fails to notify you of the
violation by some reasonable means prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is reinstated
permanently if the copyright holder notifies you of the violation by some
reasonable means, this is the first time you have received notice of
violation of this License (for any work) from that copyright holder, and
you cure the violation prior to 30 days after your receipt of the notice.
Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under this
License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.
- 9. Acceptance Not Required for Having Copies.
- You are not required to accept this License in order to
receive or run a copy of the Program. Ancillary propagation of a covered
work occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However, nothing
other than this License grants you permission to propagate or modify any
covered work. These actions infringe copyright if you do not accept this
License. Therefore, by modifying or propagating a covered work, you
indicate your acceptance of this License to do so.
- 10. Automatic Licensing of Downstream Recipients.
- Each time you convey a covered work, the recipient
automatically receives a license from the original licensors, to run,
modify and propagate that work, subject to this License. You are not
responsible for enforcing compliance by third parties with this License.
An "entity transaction" is a transaction transferring control of
an organization, or substantially all assets of one, or subdividing an
organization, or merging organizations. If propagation of a covered work
results from an entity transaction, each party to that transaction who
receives a copy of the work also receives whatever licenses to the work
the party's predecessor in interest had or could give under the previous
paragraph, plus a right to possession of the Corresponding Source of the
work from the predecessor in interest, if the predecessor has it or can
get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the rights
granted or affirmed under this License. For example, you may not impose a
license fee, royalty, or other charge for exercise of rights granted under
this License, and you may not initiate litigation (including a cross-claim
or counterclaim in a lawsuit) alleging that any patent claim is infringed
by making, using, selling, offering for sale, or importing the Program or
any portion of it.
- 11. Patents.
- A "contributor" is a copyright holder who
authorizes use under this License of the Program or a work on which the
Program is based. The work thus licensed is called the contributor's
"contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted by
this License, of making, using, or selling its contributor version, but do
not include claims that would be infringed only as a consequence of
further modification of the contributor version. For purposes of this
definition, "control" includes the right to grant patent
sublicenses in a manner consistent with the requirements of this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free patent
license under the contributor's essential patent claims, to make, use,
sell, offer for sale, import and otherwise run, modify and propagate the
contents of its contributor version.
In the following three paragraphs, a "patent license" is any
express agreement or commitment, however denominated, not to enforce a
patent (such as an express permission to practice a patent or covenant not
to sue for patent infringement). To "grant" such a patent
license to a party means to make such an agreement or commitment not to
enforce a patent against the party.
If you convey a covered work, knowingly relying on a patent license, and the
Corresponding Source of the work is not available for anyone to copy, free
of charge and under the terms of this License, through a publicly
available network server or other readily accessible means, then you must
either (1) cause the Corresponding Source to be so available, or (2)
arrange to deprive yourself of the benefit of the patent license for this
particular work, or (3) arrange, in a manner consistent with the
requirements of this License, to extend the patent license to downstream
recipients. "Knowingly relying" means you have actual knowledge
that, but for the patent license, your conveying the covered work in a
country, or your recipient's use of the covered work in a country, would
infringe one or more identifiable patents in that country that you have
reason to believe are valid.
If, pursuant to or in connection with a single transaction or arrangement,
you convey, or propagate by procuring conveyance of, a covered work, and
grant a patent license to some of the parties receiving the covered work
authorizing them to use, propagate, modify or convey a specific copy of
the covered work, then the patent license you grant is automatically
extended to all recipients of the covered work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is conditioned on
the non-exercise of one or more of the rights that are specifically
granted under this License. You may not convey a covered work if you are a
party to an arrangement with a third party that is in the business of
distributing software, under which you make payment to the third party
based on the extent of your activity of conveying the work, and under
which the third party grants, to any of the parties who would receive the
covered work from you, a discriminatory patent license (a) in connection
with copies of the covered work conveyed by you (or copies made from those
copies), or (b) primarily for and in connection with specific products or
compilations that contain the covered work, unless you entered into that
arrangement, or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting any
implied license or other defenses to infringement that may otherwise be
available to you under applicable patent law.
- 12. No Surrender of Others' Freedom.
- If conditions are imposed on you (whether by court order,
agreement or otherwise) that contradict the conditions of this License,
they do not excuse you from the conditions of this License. If you cannot
convey a covered work so as to satisfy simultaneously your obligations
under this License and any other pertinent obligations, then as a
consequence you may not convey it at all. For example, if you agree to
terms that obligate you to collect a royalty for further conveying from
those to whom you convey the Program, the only way you could satisfy both
those terms and this License would be to refrain entirely from conveying
the Program.
- 13. Use with the GNU Affero General Public License.
- Notwithstanding any other provision of this License, you
have permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this License
will continue to apply to the part which is the covered work, but the
special requirements of the GNU Affero General Public License, section 13,
concerning interaction through a network will apply to the combination as
such.
- 14. Revised Versions of this License.
- The Free Software Foundation may publish revised and/or new
versions of the GNU General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may differ
in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies that a certain numbered version of the GNU General Public
License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software Foundation.
If the Program does not specify a version number of the GNU General Public
License, you may choose any version ever published by the Free Software
Foundation.
If the Program specifies that a proxy can decide which future versions of
the GNU General Public License can be used, that proxy's public statement
of acceptance of a version permanently authorizes you to choose that
version for the Program.
Later license versions may give you additional or different permissions.
However, no additional obligations are imposed on any author or copyright
holder as a result of your choosing to follow a later version.
- 15. Disclaimer of Warranty.
- THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT
PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE
COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS
IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
CORRECTION.
- 16. Limitation of Liability.
- IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO
IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING
BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO
OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- 17. Interpretation of Sections 15 and 16.
- If the disclaimer of warranty and limitation of liability
provided above cannot be given local legal effect according to their
terms, reviewing courts shall apply local law that most closely
approximates an absolute waiver of all civil liability in connection with
the Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
If you develop a new program, and you want it to be of the greatest possible use
to the public, the best way to achieve this is to make it free software which
everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach
them to the start of each source file to most effectively state the exclusion
of warranty; and each file should have at least the "copyright" line
and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like
this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type "show w".
This is free software, and you are welcome to redistribute it
under certain conditions; type "show c" for details.
The hypothetical commands
show w and
show c should show the
appropriate parts of the General Public License. Of course, your program's
commands might be different; for a GUI interface, you would use an "about
box".
You should also get your employer (if you work as a programmer) or school, if
any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<
http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General Public
License instead of this License. But first, please read <
http://www.gnu.org/philosophy/why-not-lgpl.html>.
gfdl(7),
fsf-funding(7).
Copyright (c) 2007 Free Software Foundation, Inc.
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.