GNU General Public License v3.0

GNU GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

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- Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed.

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Preamble

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The GNU General Public License is a free, copyleft license for - software and other kinds of works.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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The precise terms and conditions for copying, distribution and - modification follow.

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TERMS AND CONDITIONS

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0. Definitions.

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“This License” refers to version 3 of the GNU General Public License.

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“Copyright” also means copyright-like laws that apply to other kinds of - works, such as semiconductor masks.

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“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.

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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.

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A “covered work” means either the unmodified Program or a work based - on the Program.

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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.

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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.

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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.

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1. Source Code.

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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.

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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.

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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.

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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.

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The Corresponding Source need not include anything that users - can regenerate automatically from other parts of the Corresponding - Source.

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The Corresponding Source for a work in source code form is that - same work.

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2. Basic Permissions.

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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.

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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.

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Conveying under any other circumstances is permitted solely under - the conditions stated below. Sublicensing is not allowed; section 10 - makes it unnecessary.

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3. Protecting Users' Legal Rights From Anti-Circumvention Law.

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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.

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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.

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4. Conveying Verbatim Copies.

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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.

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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.

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5. Conveying Modified Source Versions.

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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:

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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.

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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.

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6. Conveying Non-Source Forms.

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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:

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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.

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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.

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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.

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“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.

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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).

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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.

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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.

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7. Additional Terms.

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“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.

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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:

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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.

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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.

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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>.