1GNU GENERAL PUBLIC LICENSE2 Version 3, 29 June 200734 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>5 Everyone is permitted to copy and distribute verbatim copies of this6 license document, but changing it is not allowed.78 Preamble910 The GNU General Public License is a free, copyleft license for11software and other kinds of works.1213 The licenses for most software and other practical works are designed14to take away your freedom to share and change the works. By contrast,15the GNU General Public License is intended to guarantee your freedom to16share and change all versions of a program--to make sure it remains free17software for all its users. We, the Free Software Foundation, use the18GNU General Public License for most of our software; it applies also to19any other work released this way by its authors. You can apply it to20your programs, too.2122 When we speak of free software, we are referring to freedom, not23price. Our General Public Licenses are designed to make sure that you24have the freedom to distribute copies of free software (and charge for25them if you wish), that you receive source code or can get it if you26want it, that you can change the software or use pieces of it in new27free programs, and that you know you can do these things.2829 To protect your rights, we need to prevent others from denying you30these rights or asking you to surrender the rights. Therefore, you have31certain responsibilities if you distribute copies of the software, or if32you modify it: responsibilities to respect the freedom of others.3334 For example, if you distribute copies of such a program, whether35gratis or for a fee, you must pass on to the recipients the same36freedoms that you received. You must make sure that they, too, receive37or can get the source code. And you must show them these terms so they38know their rights.3940 Developers that use the GNU GPL protect your rights with two steps:41(1) assert copyright on the software, and (2) offer you this License42giving you legal permission to copy, distribute and/or modify it.4344 For the developers' and authors' protection, the GPL clearly explains45that there is no warranty for this free software. For both users' and46authors' sake, the GPL requires that modified versions be marked as47changed, so that their problems will not be attributed erroneously to48authors of previous versions.4950 Some devices are designed to deny users access to install or run51modified versions of the software inside them, although the manufacturer52can do so. This is fundamentally incompatible with the aim of53protecting users' freedom to change the software. The systematic54pattern of such abuse occurs in the area of products for individuals to55use, which is precisely where it is most unacceptable. Therefore, we56have designed this version of the GPL to prohibit the practice for those57products. If such problems arise substantially in other domains, we58stand ready to extend this provision to those domains in future versions59of the GPL, as needed to protect the freedom of users.6061 Finally, every program is threatened constantly by software patents.62States should not allow patents to restrict development and use of63software on general-purpose computers, but in those that do, we wish to64avoid the special danger that patents applied to a free program could65make it effectively proprietary. To prevent this, the GPL assures that66patents cannot be used to render the program non-free.6768 The precise terms and conditions for copying, distribution and69modification follow.7071 TERMS AND CONDITIONS7273 0. Definitions.7475 "This License" refers to version 3 of the GNU General Public License.7677 "The Program" refers to any copyrightable work licensed under this78License. Each licensee is addressed as "you". "Licensees" and79"recipients" may be individuals or organizations.8081 To "modify" a work means to copy from or adapt all or part of the work82in a way requiring copyright permission, other than the making of an83exact copy. The resulting work is called a "modified version" of the84earlier work or a work "based on" the earlier work.8586 A "covered work" means either the unmodified Program or a work based87on the Program.8889 To "propagate" a work means to do anything with it that, without90permission, would make you directly or secondarily liable for91infringement under applicable copyright law, except executing it on a92computer or modifying a private copy. Propagation includes copying,93distribution (with or without modification), making available to the94public, and in some countries other activities as well.9596 To "convey" a work means any kind of propagation that enables other97parties to make or receive copies. Mere interaction with a user through98a computer network, with no transfer of a copy, is not conveying.99100 An interactive user interface displays "Appropriate Legal Notices"101to the extent that it includes a convenient and prominently visible102feature that (1) displays an appropriate copyright notice, and (2)103tells the user that there is no warranty for the work (except to the104extent that warranties are provided), that licensees may convey the105work under this License, and how to view a copy of this License. If106the interface presents a list of user commands or options, such as a107menu, a prominent item in the list meets this criterion.108109 1. Source Code.110111 The "source code" for a work means the preferred form of the work112for making modifications to it. "Object code" means any non-source113form of a work.114115 A "Standard Interface" means an interface that either is an official116standard defined by a recognized standards body, or, in the case of117interfaces specified for a particular programming language, one that118is widely used among developers working in that language.119120 The "System Libraries" of an executable work include anything, other121than the work as a whole, that (a) is included in the normal form of122packaging a Major Component, but which is not part of that Major123Component, and (b) serves only to enable use of the work with that124Major Component, or to implement a Standard Interface for which an125implementation is available to the public in source code form. A126"Major Component", in this context, means a major essential component127(kernel, window system, and so on) of the specific operating system128(if any) on which the executable work runs, or a compiler used to129produce the work, or an object code interpreter used to run it.130131 The "Corresponding Source" for a work in object code form means all132the source code needed to generate, install, and (for an executable133work) run the object code and to modify the work, including scripts to134control those activities. However, it does not include the work's135System Libraries, or general-purpose tools or generally available free136programs which are used unmodified in performing those activities but137which are not part of the work. For example, Corresponding Source138includes interface definition files associated with source files for139the work, and the source code for shared libraries and dynamically140linked subprograms that the work is specifically designed to require,141such as by intimate data communication or control flow between those142subprograms and other parts of the work.143144 The Corresponding Source need not include anything that users145can regenerate automatically from other parts of the Corresponding146Source.147148 The Corresponding Source for a work in source code form is that149same work.150151 2. Basic Permissions.152153 All rights granted under this License are granted for the term of154copyright on the Program, and are irrevocable provided the stated155conditions are met. This License explicitly affirms your unlimited156permission to run the unmodified Program. The output from running a157covered work is covered by this License only if the output, given its158content, constitutes a covered work. This License acknowledges your159rights of fair use or other equivalent, as provided by copyright law.160161 You may make, run and propagate covered works that you do not162convey, without conditions so long as your license otherwise remains163in force. You may convey covered works to others for the sole purpose164of having them make modifications exclusively for you, or provide you165with facilities for running those works, provided that you comply with166the terms of this License in conveying all material for which you do167not control copyright. Those thus making or running the covered works168for you must do so exclusively under your direction and control, on169terms that prohibit them from making copies of your copyrighted material170outside their relationship with you.171172 Conveying under any other circumstances is permitted solely under173the conditions stated below. Sublicensing is not allowed; section 10174makes it unnecessary.175176 3. Protecting Users' Legal Rights From Anti-Circumvention Law.177178 No covered work shall be deemed part of an effective technological179measure under any applicable law fulfilling obligations under WIPO180copyright treaty or adopted under a similar law prohibiting or181restricting circumvention of such measures. When you convey a covered182work, you waive any legal power to forbid circumvention of technological183measures to the extent such circumvention is effected by exercising184rights under this License with respect to the covered work, and you185disregard any limitation on those rights stated in the recipient's rights186under section 3, or anywhere else in this License.187188 4. Conveying Verbatim Copies.189190 You may convey verbatim copies of the Program's source code as you191receive it, in any medium, provided that you conspicuously and192appropriately publish on each copy an appropriate copyright notice;193keep intact all notices stating that this License and any194non-permissive terms added in accord with section 7 apply to the code;195keep intact all notices of the absence of any warranty; and give all196recipients a copy of this License along with the Program.197198 You may charge any price or no price for each copy that you convey,199and you may offer support or warranty protection for a fee.200201 5. Conveying Modified Source Versions.202203 You may convey a work based on the Program, or the modifications to204produce it from the Program, in the form of source code under the205terms of section 4, provided that you also meet all of these conditions:206207 a) The work must carry prominent notices stating that you modified208 it, and giving a relevant date.209210 b) The work must carry prominent notices stating that it is211 released under this License and any conditions added under section 7.212 This requirement modifies the requirement in section 4 to213 "keep intact all notices".214215 c) You must license the entire work, as a whole, under this216 License to anyone who comes into possession of a copy. This217 License will therefore apply, together with any additional terms of218 section 7, to the whole of the work, and all its parts,219 regardless of how they are packaged. This License gives no220 permission to license the work in any other way, but it does not221 invalidate such permission if you have separately received it.222223 d) If the work has interactive user interfaces, each must display224 Appropriate Legal Notices; however, if the Program has interactive225 interfaces that do not display Appropriate Legal Notices, your226 work need not make them do so.227228 A compilation of a covered work with other separate and independent229works, which are not by their nature extensions of the covered work,230and which are not combined with it such as to form a larger program,231in or on a volume of a storage or distribution medium, is called an232"aggregate" if the compilation and its resulting copyright are not233used to limit the access or legal rights of the compilation's users234beyond what the individual works permit. Inclusion of a covered work235in an aggregate does not cause this License to apply to the other236parts of the aggregate.237238 6. Conveying Non-Source Forms.239240 You may convey a covered work in object code form under the terms241of sections 4 and 5, provided that you also convey the242machine-readable Corresponding Source under the terms of this License,243in one of these ways:244245 a) Convey the object code in, or embodied in, a physical product246 (including a physical distribution medium), accompanied by the247 Corresponding Source fixed on a durable physical medium248 customarily used for software interchange.249250 b) Convey the object code in, or embodied in, a physical product251 (including a physical distribution medium), accompanied by a252 written offer, valid for at least three years and valid for as253 long as you offer spare parts or customer support for that product254 model, to give anyone who possesses the object code either (1) a255 copy of the Corresponding Source for all the software in the256 product that is covered by this License, on a durable physical257 medium customarily used for software interchange, for a price no258 more than your reasonable cost of physically performing this259 conveying of source, or (2) access to copy the260 Corresponding Source from a network server at no charge.261262 c) Convey individual copies of the object code with a copy of the263 written offer to provide the Corresponding Source. This264 alternative is allowed only occasionally and noncommercially, and265 only if you received the object code with such an offer, in accord266 with subsection 6b.267268 d) Convey the object code by offering access from a designated269 place (gratis or for a charge), and offer equivalent access to the270 Corresponding Source in the same way through the same place at no271 further charge. You need not require recipients to copy the272 Corresponding Source along with the object code. If the place to273 copy the object code is a network server, the Corresponding Source274 may be on a different server (operated by you or a third party)275 that supports equivalent copying facilities, provided you maintain276 clear directions next to the object code saying where to find the277 Corresponding Source. Regardless of what server hosts the278 Corresponding Source, you remain obligated to ensure that it is279 available for as long as needed to satisfy these requirements.280281 e) Convey the object code using peer-to-peer transmission, provided282 you inform other peers where the object code and Corresponding283 Source of the work are being offered to the general public at no284 charge under subsection 6d.285286 A separable portion of the object code, whose source code is excluded287from the Corresponding Source as a System Library, need not be288included in conveying the object code work.289290 A "User Product" is either (1) a "consumer product", which means any291tangible personal property which is normally used for personal, family,292or household purposes, or (2) anything designed or sold for incorporation293into a dwelling. In determining whether a product is a consumer product,294doubtful cases shall be resolved in favor of coverage. For a particular295product received by a particular user, "normally used" refers to a296typical or common use of that class of product, regardless of the status297of the particular user or of the way in which the particular user298actually uses, or expects or is expected to use, the product. A product299is a consumer product regardless of whether the product has substantial300commercial, industrial, or non-consumer uses, unless such uses represent301the only significant mode of use of the product.302303 "Installation Information" for a User Product means any methods,304procedures, authorization keys, or other information required to install305and execute modified versions of a covered work in that User Product from306a modified version of its Corresponding Source. The information must307suffice to ensure that the continued functioning of the modified object308code is in no case prevented or interfered with solely because309modification has been made.310311 If you convey an object code work under this section in, with, or312specifically for use in a User Product, and the conveying occurs as313part of a transaction in which the right of possession and use of the314User Product is transferred to the recipient in perpetuity or for a315fixed term (regardless of how the transaction is characterized), the316Corresponding Source conveyed under this section must be accompanied317by the Installation Information. But this requirement does not apply318if neither you nor any third party retains the ability to install319modified object code on the User Product (for example, the work has320been installed in ROM).321322 The requirement to provide Installation Information does not include a323requirement to continue to provide support service, warranty, or updates324for a work that has been modified or installed by the recipient, or for325the User Product in which it has been modified or installed. Access to a326network may be denied when the modification itself materially and327adversely affects the operation of the network or violates the rules and328protocols for communication across the network.329330 Corresponding Source conveyed, and Installation Information provided,331in accord with this section must be in a format that is publicly332documented (and with an implementation available to the public in333source code form), and must require no special password or key for334unpacking, reading or copying.335336 7. Additional Terms.337338 "Additional permissions" are terms that supplement the terms of this339License by making exceptions from one or more of its conditions.340Additional permissions that are applicable to the entire Program shall341be treated as though they were included in this License, to the extent342that they are valid under applicable law. If additional permissions343apply only to part of the Program, that part may be used separately344under those permissions, but the entire Program remains governed by345this License without regard to the additional permissions.346347 When you convey a copy of a covered work, you may at your option348remove any additional permissions from that copy, or from any part of349it. (Additional permissions may be written to require their own350removal in certain cases when you modify the work.) You may place351additional permissions on material, added by you to a covered work,352for which you have or can give appropriate copyright permission.353354 Notwithstanding any other provision of this License, for material you355add to a covered work, you may (if authorized by the copyright holders of356that material) supplement the terms of this License with terms:357358 a) Disclaiming warranty or limiting liability differently from the359 terms of sections 15 and 16 of this License; or360361 b) Requiring preservation of specified reasonable legal notices or362 author attributions in that material or in the Appropriate Legal363 Notices displayed by works containing it; or364365 c) Prohibiting misrepresentation of the origin of that material, or366 requiring that modified versions of such material be marked in367 reasonable ways as different from the original version; or368369 d) Limiting the use for publicity purposes of names of licensors or370 authors of the material; or371372 e) Declining to grant rights under trademark law for use of some373 trade names, trademarks, or service marks; or374375 f) Requiring indemnification of licensors and authors of that376 material by anyone who conveys the material (or modified versions of377 it) with contractual assumptions of liability to the recipient, for378 any liability that these contractual assumptions directly impose on379 those licensors and authors.380381 All other non-permissive additional terms are considered "further382restrictions" within the meaning of section 10. If the Program as you383received it, or any part of it, contains a notice stating that it is384governed by this License along with a term that is a further restriction,385you may remove that term. If a license document contains a further386restriction but permits relicensing or conveying under this License, you387may add to a covered work material governed by the terms of that license388document, provided that the further restriction does not survive such389relicensing or conveying.390391 If you add terms to a covered work in accord with this section, you392must place, in the relevant source files, a statement of the393additional terms that apply to those files, or a notice indicating394where to find the applicable terms.395396 Additional terms, permissive or non-permissive, may be stated in the397form of a separately written license, or stated as exceptions;398the above requirements apply either way.399400 8. Termination.401402 You may not propagate or modify a covered work except as expressly403provided under this License. Any attempt otherwise is void, and will404automatically terminate your rights under this License (including any405patent licenses granted under the third paragraph of section 11).406407 However, if you cease all violation of this License, then your408license from a particular copyright holder is reinstated (a)409provisionally, unless and until the copyright holder explicitly and410finally terminates your license, and (b) permanently, if the copyright411holder fails to notify you of the violation by some reasonable means412prior to 60 days after the cessation.413414 Moreover, your license from a particular copyright holder is415reinstated permanently if the copyright holder notifies you of the416violation by some reasonable means, this is the first time you have417received notice of violation of this License (for any work) from that418copyright holder, and you cure the violation prior to 30 days after419your receipt of the notice.420421 Termination of your rights under this section does not terminate the422licenses of parties who have received copies or rights from you under423this License. If your rights have been terminated and not permanently424reinstated, you do not qualify to receive new licenses for the same425material under section 10.426427 9. Acceptance Not Required for Having Copies.428429 You are not required to accept this License in order to receive or430run a copy of the Program. Ancillary propagation of a covered work431occurring solely as a consequence of using peer-to-peer transmission432to receive a copy likewise does not require acceptance. However,433nothing other than this License grants you permission to propagate or434modify any covered work. These actions infringe copyright if you do435not accept this License. Therefore, by modifying or propagating a436covered work, you indicate your acceptance of this License to do so.437438 10. Automatic Licensing of Downstream Recipients.439440 Each time you convey a covered work, the recipient automatically441receives a license from the original licensors, to run, modify and442propagate that work, subject to this License. You are not responsible443for enforcing compliance by third parties with this License.444445 An "entity transaction" is a transaction transferring control of an446organization, or substantially all its assets of one, or subdividing an447organization, or merging organizations. If propagation of a covered448work results from an entity transaction, each party to that449transaction who receives a copy of the work also receives whatever450licenses to the work the party's predecessor in interest had or could451give under the previous paragraph, plus a right to possession of the452Corresponding Source of the work from the predecessor in interest, if453the predecessor has it or can get it with reasonable efforts.454455 You may not impose any further restrictions on the exercise of the456rights granted or affirmed under this License. For example, you may457not impose a license fee, royalty, or other charge for exercise of458rights granted under this License, and you may not initiate litigation459(including a cross-claim or counterclaim in a lawsuit) alleging that460any patent claim is infringed by making, using, selling, offering for461sale, or importing the Program or any portion of it.462463 11. Patents.464465 Each contributor grants you a non-exclusive, worldwide, royalty-free466patent license under the contributor's essential patent claims, to467make, use, sell, offer for sale, import and otherwise run, modify and468propagate the contents of its contributor version.469470 In the following three paragraphs, a "patent claim" is any patent471claim that has been acquired or asserted against you, including one472that you have the ability to acquire or assert, including one that you473have the ability to acquire or assert, whether or not it was acquired474or asserted against you previously. If you or your affiliated entity475file or maintain a patent litigation alleging that the Program or a476contribution incorporated within the Program constitutes direct or477contributory patent infringement, then any patent licenses granted to478you under this License for that Program shall terminate as of the date479such litigation is filed.480481 A "contributor" is a copyright holder who authorizes use of this482License to license the Program or a work based on the Program.483484 A contributor's "essential patent claims" are all patent claims485owned or controlled by the contributor, whether already acquired or486hereafter acquired, that would be infringed by some manner, permitted487by this License, of making, using, or selling its contributor version,488but do not include claims that would be infringed only as a489consequence of further modification of the contributor version. For490purposes of this definition, "control" includes the right to grant491patent sublicenses in a way that consistent with the requirements of492this License.493494 Each contributor's essential patent claims do not include claims495that would be infringed only as a consequence of further modification496of the contributor version. For purposes of this definition,497"control" includes the right to grant patent sublicenses in a way that498is consistent with the requirements of this License.499500 If you convey a covered work, you waive any legal power to forbid501circumvention of technological measures to the extent such circumvention502is effected by exercising rights under this License with respect to the503covered work, and you disclaim any intention to limit operation or504modification of the work as a means of enforcing, against the work's505users, your or third parties' legal rights to forbid circumvention of506technological measures.507508 12. No Surrender of Others' Freedom.509510 If conditions are imposed on you (whether by court order, agreement or511otherwise) that contradict the conditions of this License, they do not512excuse you from the conditions of this License. If you cannot convey a513covered work so as to satisfy simultaneously your obligations under this514License and any other pertinent obligations, then as a consequence you may515not convey it at all. For example, if you agree to terms that obligate you516to collect a royalty for further conveying from those to whom you convey517the Program, the only way you could satisfy both those terms and this518License would be to refrain entirely from conveying the Program.519520 13. Use with the GNU Affero General Public License.521522 Notwithstanding any other provision of this License, you have523permission to link or combine any covered work with a work licensed524under version 3 of the GNU Affero General Public License into a single525combined work, and to convey the resulting work. The terms of this526License will continue to apply to the part which is the covered work,527but the special requirements of the GNU Affero General Public License,528section 13, concerning interaction through a network will apply to the529combination as such.530531 14. Revised Versions of this License.532533 The Free Software Foundation may publish revised or new versions of534the GNU General Public License from time to time. Such new versions will535be similar in spirit to the present version, but may differ in detail to536address new problems or concerns.537538 Each version is given a distinguishing version number. If the539Program specifies that a certain numbered version of the GNU General540Public License "or any later version" applies to it, you may choose541to follow the terms and conditions either of that numbered version or542of any later version published by the Free Software Foundation. If543the Program does not specify a version number of the GNU General544Public License, you may choose any version ever published by the Free545Software Foundation.546547 If the Program specifies that a proxy can decide which future548versions of the GNU General Public License can be used, that proxy's549public statement of acceptance of a version permanently authorizes you550to choose that version for the Program.551552 Later license versions may give you additional or different553permissions. However, no additional obligations are imposed on any554author or copyright holder as a result of your choosing to follow a555later version.556557 15. Disclaimer of Warranty.558559 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY560APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT561HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY562OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,563THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR564PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM565IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF566ALL NECESSARY SERVICING, REPAIR OR CORRECTION.567568 16. Limitation of Liability.569570 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING571WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS572THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY573GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE574USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF575DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD576PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),577EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF578SUCH DAMAGES.579580 17. Interpretation of Sections 15 and 16.581582 If the disclaimer of warranty and limitation of liability provided583above cannot be given local legal effect according to their terms,584reviewing courts shall apply local law that most closely approximates585an absolute waiver of all civil liability in connection with the586Program, unless a warranty or assumption of liability accompanies a587copy of the Program in return for a fee.588589 END OF TERMS AND CONDITIONS590591 How to Apply These Terms to Your New Programs592593 If you develop a new program, and you want it to be of the greatest594possible use to the public, the best way to achieve this is to make it595free software which everyone can redistribute and change under these terms.596597 To do so, attach the following notices to the program. It is safest598to attach them to the start of each source file to most effectively599state the exclusion of warranty; and each file should have at least the600"copyright" line and a pointer to where the full notice is found.601602 <one line to give the program's name and a brief idea of what it does.>603 Copyright (C) <year> <name of author>604605 This program is free software: you can redistribute it and/or modify606 it under the terms of the GNU General Public License as published by607 the Free Software Foundation, either version 3 of the License, or608 (at your option) any later version.609610 This program is distributed in the hope that it will be useful,611 but WITHOUT ANY WARRANTY; without even the implied warranty of612 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the613 GNU General Public License for more details.614615 You should have received a copy of the GNU General Public License616 along with this program. If not, see <https://www.gnu.org/licenses/>.617618Also add information on how to contact you by electronic and paper mail.619620 If the program does terminal interaction, make it output a short621notice like this when it starts in an interactive mode:622623 <program> Copyright (C) <year> <name of author>624 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.625 This is free software, and you are welcome to redistribute it626 under certain conditions; type `show c' for details.627628The hypothetical commands `show w' and `show c' should show the appropriate629parts of the General Public License. Of course, your program's commands630might be different; for a GUI interface, you would use an "about box".631632 You should also get your employer (if you work as a programmer) or633school, if any, to sign a "copyright disclaimer" for the program, if634necessary. For more information on this, and how to apply and follow the635GNU GPL, see <https://www.gnu.org/licenses/>.636637 The GNU General Public License does not permit incorporating your program638into proprietary programs. If your program is a subroutine library, you639may consider it more useful to permit linking proprietary applications with640the library. If this is what you want to do, use the GNU Lesser General641Public License instead of this License. But first, please read642<https://www.gnu.org/licenses/why-not-lgpl.html>.