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
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
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
- 0. Definitions.
- "This License" refers to version 3 of the GNU General Public
"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
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
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
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:
- The work must carry prominent notices stating that you modified it, and
giving a relevant date.
- 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
- 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.
- 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
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
- 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
- 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
- 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.
- 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.
- 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.
- 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
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
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
- Disclaiming warranty or limiting liability differently from the terms of
sections 15 and 16 of this License; or
- 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
- 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
- Limiting the use for publicity purposes of names of licensors or authors
of the material; or
- Declining to grant rights under trademark law for use of some trade names,
trademarks, or service marks; or
- 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
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
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.
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.
- 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
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
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
- 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
- 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.
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
<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
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
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
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.
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