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GNU GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this

license document, but changing it is not allowed.

Preamble

========

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.

TERMS AND CONDITIONS

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.

END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs

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 <https://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

<https://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

<https://www.gnu.org/licenses/why-not-lgpl.html>.