| 1 | GNU GENERAL PUBLIC LICENSE |
| 2 | ========================== |
| 3 | |
| 4 | Version 3, 29 June 2007 |
| 5 | |
| 6 | Copyright © 2007 Free Software Foundation, Inc. <<http://fsf.org/>> |
| 7 | |
| 8 | Everyone is permitted to copy and distribute verbatim copies of this license |
| 9 | document, but changing it is not allowed. |
| 10 | |
| 11 | ## Preamble |
| 12 | |
| 13 | The GNU General Public License is a free, copyleft license for software and other |
| 14 | kinds of works. |
| 15 | |
| 16 | The licenses for most software and other practical works are designed to take away |
| 17 | your freedom to share and change the works. By contrast, the GNU General Public |
| 18 | License is intended to guarantee your freedom to share and change all versions of a |
| 19 | program--to make sure it remains free software for all its users. We, the Free |
| 20 | Software Foundation, use the GNU General Public License for most of our software; it |
| 21 | applies also to any other work released this way by its authors. You can apply it to |
| 22 | your programs, too. |
| 23 | |
| 24 | When we speak of free software, we are referring to freedom, not price. Our General |
| 25 | Public Licenses are designed to make sure that you have the freedom to distribute |
| 26 | copies of free software (and charge for them if you wish), that you receive source |
| 27 | code or can get it if you want it, that you can change the software or use pieces of |
| 28 | it in new free programs, and that you know you can do these things. |
| 29 | |
| 30 | To protect your rights, we need to prevent others from denying you these rights or |
| 31 | asking you to surrender the rights. Therefore, you have certain responsibilities if |
| 32 | you distribute copies of the software, or if you modify it: responsibilities to |
| 33 | respect the freedom of others. |
| 34 | |
| 35 | For example, if you distribute copies of such a program, whether gratis or for a fee, |
| 36 | you must pass on to the recipients the same freedoms that you received. You must make |
| 37 | sure that they, too, receive or can get the source code. And you must show them these |
| 38 | terms so they know their rights. |
| 39 | |
| 40 | Developers that use the GNU GPL protect your rights with two steps: (1) assert |
| 41 | copyright on the software, and (2) offer you this License giving you legal permission |
| 42 | to copy, distribute and/or modify it. |
| 43 | |
| 44 | For the developers' and authors' protection, the GPL clearly explains that there is |
| 45 | no warranty for this free software. For both users' and authors' sake, the GPL |
| 46 | requires that modified versions be marked as changed, so that their problems will not |
| 47 | be attributed erroneously to authors of previous versions. |
| 48 | |
| 49 | Some devices are designed to deny users access to install or run modified versions of |
| 50 | the software inside them, although the manufacturer can do so. This is fundamentally |
| 51 | incompatible with the aim of protecting users' freedom to change the software. The |
| 52 | systematic pattern of such abuse occurs in the area of products for individuals to |
| 53 | use, which is precisely where it is most unacceptable. Therefore, we have designed |
| 54 | this version of the GPL to prohibit the practice for those products. If such problems |
| 55 | arise substantially in other domains, we stand ready to extend this provision to |
| 56 | those domains in future versions of the GPL, as needed to protect the freedom of |
| 57 | users. |
| 58 | |
| 59 | Finally, every program is threatened constantly by software patents. States should |
| 60 | not allow patents to restrict development and use of software on general-purpose |
| 61 | computers, but in those that do, we wish to avoid the special danger that patents |
| 62 | applied to a free program could make it effectively proprietary. To prevent this, the |
| 63 | GPL assures that patents cannot be used to render the program non-free. |
| 64 | |
| 65 | The precise terms and conditions for copying, distribution and modification follow. |
| 66 | |
| 67 | ## TERMS AND CONDITIONS |
| 68 | |
| 69 | ### 0. Definitions. |
| 70 | |
| 71 | “This License” refers to version 3 of the GNU General Public License. |
| 72 | |
| 73 | “Copyright” also means copyright-like laws that apply to other kinds of |
| 74 | works, such as semiconductor masks. |
| 75 | |
| 76 | “The Program” refers to any copyrightable work licensed under this |
| 77 | License. Each licensee is addressed as “you”. “Licensees” and |
| 78 | “recipients” may be individuals or organizations. |
| 79 | |
| 80 | To “modify” a work means to copy from or adapt all or part of the work in |
| 81 | a fashion requiring copyright permission, other than the making of an exact copy. The |
| 82 | resulting work is called a “modified version” of the earlier work or a |
| 83 | work “based on” the earlier work. |
| 84 | |
| 85 | A “covered work” means either the unmodified Program or a work based on |
| 86 | the Program. |
| 87 | |
| 88 | To “propagate” a work means to do anything with it that, without |
| 89 | permission, would make you directly or secondarily liable for infringement under |
| 90 | applicable copyright law, except executing it on a computer or modifying a private |
| 91 | copy. Propagation includes copying, distribution (with or without modification), |
| 92 | making available to the public, and in some countries other activities as well. |
| 93 | |
| 94 | To “convey” a work means any kind of propagation that enables other |
| 95 | parties to make or receive copies. Mere interaction with a user through a computer |
| 96 | network, with no transfer of a copy, is not conveying. |
| 97 | |
| 98 | An interactive user interface displays “Appropriate Legal Notices” to the |
| 99 | extent that it includes a convenient and prominently visible feature that (1) |
| 100 | displays an appropriate copyright notice, and (2) tells the user that there is no |
| 101 | warranty for the work (except to the extent that warranties are provided), that |
| 102 | licensees may convey the work under this License, and how to view a copy of this |
| 103 | License. If the interface presents a list of user commands or options, such as a |
| 104 | menu, a prominent item in the list meets this criterion. |
| 105 | |
| 106 | ### 1. Source Code. |
| 107 | |
| 108 | The “source code” for a work means the preferred form of the work for |
| 109 | making modifications to it. “Object code” means any non-source form of a |
| 110 | work. |
| 111 | |
| 112 | A “Standard Interface” means an interface that either is an official |
| 113 | standard defined by a recognized standards body, or, in the case of interfaces |
| 114 | specified for a particular programming language, one that is widely used among |
| 115 | developers working in that language. |
| 116 | |
| 117 | The “System Libraries” of an executable work include anything, other than |
| 118 | the work as a whole, that (a) is included in the normal form of packaging a Major |
| 119 | Component, but which is not part of that Major Component, and (b) serves only to |
| 120 | enable use of the work with that Major Component, or to implement a Standard |
| 121 | Interface for which an implementation is available to the public in source code form. |
| 122 | A “Major Component”, in this context, means a major essential component |
| 123 | (kernel, window system, and so on) of the specific operating system (if any) on which |
| 124 | the executable work runs, or a compiler used to produce the work, or an object code |
| 125 | interpreter used to run it. |
| 126 | |
| 127 | The “Corresponding Source” for a work in object code form means all the |
| 128 | source code needed to generate, install, and (for an executable work) run the object |
| 129 | code and to modify the work, including scripts to control those activities. However, |
| 130 | it does not include the work's System Libraries, or general-purpose tools or |
| 131 | generally available free programs which are used unmodified in performing those |
| 132 | activities but which are not part of the work. For example, Corresponding Source |
| 133 | includes interface definition files associated with source files for the work, and |
| 134 | the source code for shared libraries and dynamically linked subprograms that the work |
| 135 | is specifically designed to require, such as by intimate data communication or |
| 136 | control flow between those subprograms and other parts of the work. |
| 137 | |
| 138 | The Corresponding Source need not include anything that users can regenerate |
| 139 | automatically from other parts of the Corresponding Source. |
| 140 | |
| 141 | The Corresponding Source for a work in source code form is that same work. |
| 142 | |
| 143 | ### 2. Basic Permissions. |
| 144 | |
| 145 | All rights granted under this License are granted for the term of copyright on the |
| 146 | Program, and are irrevocable provided the stated conditions are met. This License |
| 147 | explicitly affirms your unlimited permission to run the unmodified Program. The |
| 148 | output from running a covered work is covered by this License only if the output, |
| 149 | given its content, constitutes a covered work. This License acknowledges your rights |
| 150 | of fair use or other equivalent, as provided by copyright law. |
| 151 | |
| 152 | You may make, run and propagate covered works that you do not convey, without |
| 153 | conditions so long as your license otherwise remains in force. You may convey covered |
| 154 | works to others for the sole purpose of having them make modifications exclusively |
| 155 | for you, or provide you with facilities for running those works, provided that you |
| 156 | comply with the terms of this License in conveying all material for which you do not |
| 157 | control copyright. Those thus making or running the covered works for you must do so |
| 158 | exclusively on your behalf, under your direction and control, on terms that prohibit |
| 159 | them from making any copies of your copyrighted material outside their relationship |
| 160 | with you. |
| 161 | |
| 162 | Conveying under any other circumstances is permitted solely under the conditions |
| 163 | stated below. Sublicensing is not allowed; section 10 makes it unnecessary. |
| 164 | |
| 165 | ### 3. Protecting Users' Legal Rights From Anti-Circumvention Law. |
| 166 | |
| 167 | No covered work shall be deemed part of an effective technological measure under any |
| 168 | applicable law fulfilling obligations under article 11 of the WIPO copyright treaty |
| 169 | adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention |
| 170 | of such measures. |
| 171 | |
| 172 | When you convey a covered work, you waive any legal power to forbid circumvention of |
| 173 | technological measures to the extent such circumvention is effected by exercising |
| 174 | rights under this License with respect to the covered work, and you disclaim any |
| 175 | intention to limit operation or modification of the work as a means of enforcing, |
| 176 | against the work's users, your or third parties' legal rights to forbid circumvention |
| 177 | of technological measures. |
| 178 | |
| 179 | ### 4. Conveying Verbatim Copies. |
| 180 | |
| 181 | You may convey verbatim copies of the Program's source code as you receive it, in any |
| 182 | medium, provided that you conspicuously and appropriately publish on each copy an |
| 183 | appropriate copyright notice; keep intact all notices stating that this License and |
| 184 | any non-permissive terms added in accord with section 7 apply to the code; keep |
| 185 | intact all notices of the absence of any warranty; and give all recipients a copy of |
| 186 | this License along with the Program. |
| 187 | |
| 188 | You may charge any price or no price for each copy that you convey, and you may offer |
| 189 | support or warranty protection for a fee. |
| 190 | |
| 191 | ### 5. Conveying Modified Source Versions. |
| 192 | |
| 193 | You may convey a work based on the Program, or the modifications to produce it from |
| 194 | the Program, in the form of source code under the terms of section 4, provided that |
| 195 | you also meet all of these conditions: |
| 196 | |
| 197 | * a) The work must carry prominent notices stating that you modified it, and giving a |
| 198 | relevant date. |
| 199 | * b) The work must carry prominent notices stating that it is released under this |
| 200 | License and any conditions added under section 7. This requirement modifies the |
| 201 | requirement in section 4 to “keep intact all notices”. |
| 202 | * c) You must license the entire work, as a whole, under this License to anyone who |
| 203 | comes into possession of a copy. This License will therefore apply, along with any |
| 204 | applicable section 7 additional terms, to the whole of the work, and all its parts, |
| 205 | regardless of how they are packaged. This License gives no permission to license the |
| 206 | work in any other way, but it does not invalidate such permission if you have |
| 207 | separately received it. |
| 208 | * d) If the work has interactive user interfaces, each must display Appropriate Legal |
| 209 | Notices; however, if the Program has interactive interfaces that do not display |
| 210 | Appropriate Legal Notices, your work need not make them do so. |
| 211 | |
| 212 | A compilation of a covered work with other separate and independent works, which are |
| 213 | not by their nature extensions of the covered work, and which are not combined with |
| 214 | it such as to form a larger program, in or on a volume of a storage or distribution |
| 215 | medium, is called an “aggregate” if the compilation and its resulting |
| 216 | copyright are not used to limit the access or legal rights of the compilation's users |
| 217 | beyond what the individual works permit. Inclusion of a covered work in an aggregate |
| 218 | does not cause this License to apply to the other parts of the aggregate. |
| 219 | |
| 220 | ### 6. Conveying Non-Source Forms. |
| 221 | |
| 222 | You may convey a covered work in object code form under the terms of sections 4 and |
| 223 | 5, provided that you also convey the machine-readable Corresponding Source under the |
| 224 | terms of this License, in one of these ways: |
| 225 | |
| 226 | * a) Convey the object code in, or embodied in, a physical product (including a |
| 227 | physical distribution medium), accompanied by the Corresponding Source fixed on a |
| 228 | durable physical medium customarily used for software interchange. |
| 229 | * b) Convey the object code in, or embodied in, a physical product (including a |
| 230 | physical distribution medium), accompanied by a written offer, valid for at least |
| 231 | three years and valid for as long as you offer spare parts or customer support for |
| 232 | that product model, to give anyone who possesses the object code either (1) a copy of |
| 233 | the Corresponding Source for all the software in the product that is covered by this |
| 234 | License, on a durable physical medium customarily used for software interchange, for |
| 235 | a price no more than your reasonable cost of physically performing this conveying of |
| 236 | source, or (2) access to copy the Corresponding Source from a network server at no |
| 237 | charge. |
| 238 | * c) Convey individual copies of the object code with a copy of the written offer to |
| 239 | provide the Corresponding Source. This alternative is allowed only occasionally and |
| 240 | noncommercially, and only if you received the object code with such an offer, in |
| 241 | accord with subsection 6b. |
| 242 | * d) Convey the object code by offering access from a designated place (gratis or for |
| 243 | a charge), and offer equivalent access to the Corresponding Source in the same way |
| 244 | through the same place at no further charge. You need not require recipients to copy |
| 245 | the Corresponding Source along with the object code. If the place to copy the object |
| 246 | code is a network server, the Corresponding Source may be on a different server |
| 247 | (operated by you or a third party) that supports equivalent copying facilities, |
| 248 | provided you maintain clear directions next to the object code saying where to find |
| 249 | the Corresponding Source. Regardless of what server hosts the Corresponding Source, |
| 250 | you remain obligated to ensure that it is available for as long as needed to satisfy |
| 251 | these requirements. |
| 252 | * e) Convey the object code using peer-to-peer transmission, provided you inform |
| 253 | other peers where the object code and Corresponding Source of the work are being |
| 254 | offered to the general public at no charge under subsection 6d. |
| 255 | |
| 256 | A separable portion of the object code, whose source code is excluded from the |
| 257 | Corresponding Source as a System Library, need not be included in conveying the |
| 258 | object code work. |
| 259 | |
| 260 | A “User Product” is either (1) a “consumer product”, which |
| 261 | means any tangible personal property which is normally used for personal, family, or |
| 262 | household purposes, or (2) anything designed or sold for incorporation into a |
| 263 | dwelling. In determining whether a product is a consumer product, doubtful cases |
| 264 | shall be resolved in favor of coverage. For a particular product received by a |
| 265 | particular user, “normally used” refers to a typical or common use of |
| 266 | that class of product, regardless of the status of the particular user or of the way |
| 267 | in which the particular user actually uses, or expects or is expected to use, the |
| 268 | product. A product is a consumer product regardless of whether the product has |
| 269 | substantial commercial, industrial or non-consumer uses, unless such uses represent |
| 270 | the only significant mode of use of the product. |
| 271 | |
| 272 | “Installation Information” for a User Product means any methods, |
| 273 | procedures, authorization keys, or other information required to install and execute |
| 274 | modified versions of a covered work in that User Product from a modified version of |
| 275 | its Corresponding Source. The information must suffice to ensure that the continued |
| 276 | functioning of the modified object code is in no case prevented or interfered with |
| 277 | solely because modification has been made. |
| 278 | |
| 279 | If you convey an object code work under this section in, or with, or specifically for |
| 280 | use in, a User Product, and the conveying occurs as part of a transaction in which |
| 281 | the right of possession and use of the User Product is transferred to the recipient |
| 282 | in perpetuity or for a fixed term (regardless of how the transaction is |
| 283 | characterized), the Corresponding Source conveyed under this section must be |
| 284 | accompanied by the Installation Information. But this requirement does not apply if |
| 285 | neither you nor any third party retains the ability to install modified object code |
| 286 | on the User Product (for example, the work has been installed in ROM). |
| 287 | |
| 288 | The requirement to provide Installation Information does not include a requirement to |
| 289 | continue to provide support service, warranty, or updates for a work that has been |
| 290 | modified or installed by the recipient, or for the User Product in which it has been |
| 291 | modified or installed. Access to a network may be denied when the modification itself |
| 292 | materially and adversely affects the operation of the network or violates the rules |
| 293 | and protocols for communication across the network. |
| 294 | |
| 295 | Corresponding Source conveyed, and Installation Information provided, in accord with |
| 296 | this section must be in a format that is publicly documented (and with an |
| 297 | implementation available to the public in source code form), and must require no |
| 298 | special password or key for unpacking, reading or copying. |
| 299 | |
| 300 | ### 7. Additional Terms. |
| 301 | |
| 302 | “Additional permissions” are terms that supplement the terms of this |
| 303 | License by making exceptions from one or more of its conditions. Additional |
| 304 | permissions that are applicable to the entire Program shall be treated as though they |
| 305 | were included in this License, to the extent that they are valid under applicable |
| 306 | law. If additional permissions apply only to part of the Program, that part may be |
| 307 | used separately under those permissions, but the entire Program remains governed by |
| 308 | this License without regard to the additional permissions. |
| 309 | |
| 310 | When you convey a copy of a covered work, you may at your option remove any |
| 311 | additional permissions from that copy, or from any part of it. (Additional |
| 312 | permissions may be written to require their own removal in certain cases when you |
| 313 | modify the work.) You may place additional permissions on material, added by you to a |
| 314 | covered work, for which you have or can give appropriate copyright permission. |
| 315 | |
| 316 | Notwithstanding any other provision of this License, for material you add to a |
| 317 | covered work, you may (if authorized by the copyright holders of that material) |
| 318 | supplement the terms of this License with terms: |
| 319 | |
| 320 | * a) Disclaiming warranty or limiting liability differently from the terms of |
| 321 | sections 15 and 16 of this License; or |
| 322 | * b) Requiring preservation of specified reasonable legal notices or author |
| 323 | attributions in that material or in the Appropriate Legal Notices displayed by works |
| 324 | containing it; or |
| 325 | * c) Prohibiting misrepresentation of the origin of that material, or requiring that |
| 326 | modified versions of such material be marked in reasonable ways as different from the |
| 327 | original version; or |
| 328 | * d) Limiting the use for publicity purposes of names of licensors or authors of the |
| 329 | material; or |
| 330 | * e) Declining to grant rights under trademark law for use of some trade names, |
| 331 | trademarks, or service marks; or |
| 332 | * f) Requiring indemnification of licensors and authors of that material by anyone |
| 333 | who conveys the material (or modified versions of it) with contractual assumptions of |
| 334 | liability to the recipient, for any liability that these contractual assumptions |
| 335 | directly impose on those licensors and authors. |
| 336 | |
| 337 | All other non-permissive additional terms are considered “further |
| 338 | restrictions” within the meaning of section 10. If the Program as you received |
| 339 | it, or any part of it, contains a notice stating that it is governed by this License |
| 340 | along with a term that is a further restriction, you may remove that term. If a |
| 341 | license document contains a further restriction but permits relicensing or conveying |
| 342 | under this License, you may add to a covered work material governed by the terms of |
| 343 | that license document, provided that the further restriction does not survive such |
| 344 | relicensing or conveying. |
| 345 | |
| 346 | If you add terms to a covered work in accord with this section, you must place, in |
| 347 | the relevant source files, a statement of the additional terms that apply to those |
| 348 | files, or a notice indicating where to find the applicable terms. |
| 349 | |
| 350 | Additional terms, permissive or non-permissive, may be stated in the form of a |
| 351 | separately written license, or stated as exceptions; the above requirements apply |
| 352 | either way. |
| 353 | |
| 354 | ### 8. Termination. |
| 355 | |
| 356 | You may not propagate or modify a covered work except as expressly provided under |
| 357 | this License. Any attempt otherwise to propagate or modify it is void, and will |
| 358 | automatically terminate your rights under this License (including any patent licenses |
| 359 | granted under the third paragraph of section 11). |
| 360 | |
| 361 | However, if you cease all violation of this License, then your license from a |
| 362 | particular copyright holder is reinstated (a) provisionally, unless and until the |
| 363 | copyright holder explicitly and finally terminates your license, and (b) permanently, |
| 364 | if the copyright holder fails to notify you of the violation by some reasonable means |
| 365 | prior to 60 days after the cessation. |
| 366 | |
| 367 | Moreover, your license from a particular copyright holder is reinstated permanently |
| 368 | if the copyright holder notifies you of the violation by some reasonable means, this |
| 369 | is the first time you have received notice of violation of this License (for any |
| 370 | work) from that copyright holder, and you cure the violation prior to 30 days after |
| 371 | your receipt of the notice. |
| 372 | |
| 373 | Termination of your rights under this section does not terminate the licenses of |
| 374 | parties who have received copies or rights from you under this License. If your |
| 375 | rights have been terminated and not permanently reinstated, you do not qualify to |
| 376 | receive new licenses for the same material under section 10. |
| 377 | |
| 378 | ### 9. Acceptance Not Required for Having Copies. |
| 379 | |
| 380 | You are not required to accept this License in order to receive or run a copy of the |
| 381 | Program. Ancillary propagation of a covered work occurring solely as a consequence of |
| 382 | using peer-to-peer transmission to receive a copy likewise does not require |
| 383 | acceptance. However, nothing other than this License grants you permission to |
| 384 | propagate or modify any covered work. These actions infringe copyright if you do not |
| 385 | accept this License. Therefore, by modifying or propagating a covered work, you |
| 386 | indicate your acceptance of this License to do so. |
| 387 | |
| 388 | ### 10. Automatic Licensing of Downstream Recipients. |
| 389 | |
| 390 | Each time you convey a covered work, the recipient automatically receives a license |
| 391 | from the original licensors, to run, modify and propagate that work, subject to this |
| 392 | License. You are not responsible for enforcing compliance by third parties with this |
| 393 | License. |
| 394 | |
| 395 | An “entity transaction” is a transaction transferring control of an |
| 396 | organization, or substantially all assets of one, or subdividing an organization, or |
| 397 | merging organizations. If propagation of a covered work results from an entity |
| 398 | transaction, each party to that transaction who receives a copy of the work also |
| 399 | receives whatever licenses to the work the party's predecessor in interest had or |
| 400 | could give under the previous paragraph, plus a right to possession of the |
| 401 | Corresponding Source of the work from the predecessor in interest, if the predecessor |
| 402 | has it or can get it with reasonable efforts. |
| 403 | |
| 404 | You may not impose any further restrictions on the exercise of the rights granted or |
| 405 | affirmed under this License. For example, you may not impose a license fee, royalty, |
| 406 | or other charge for exercise of rights granted under this License, and you may not |
| 407 | initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging |
| 408 | that any patent claim is infringed by making, using, selling, offering for sale, or |
| 409 | importing the Program or any portion of it. |
| 410 | |
| 411 | ### 11. Patents. |
| 412 | |
| 413 | A “contributor” is a copyright holder who authorizes use under this |
| 414 | License of the Program or a work on which the Program is based. The work thus |
| 415 | licensed is called the contributor's “contributor version”. |
| 416 | |
| 417 | A contributor's “essential patent claims” are all patent claims owned or |
| 418 | controlled by the contributor, whether already acquired or hereafter acquired, that |
| 419 | would be infringed by some manner, permitted by this License, of making, using, or |
| 420 | selling its contributor version, but do not include claims that would be infringed |
| 421 | only as a consequence of further modification of the contributor version. For |
| 422 | purposes of this definition, “control” includes the right to grant patent |
| 423 | sublicenses in a manner consistent with the requirements of this License. |
| 424 | |
| 425 | Each contributor grants you a non-exclusive, worldwide, royalty-free patent license |
| 426 | under the contributor's essential patent claims, to make, use, sell, offer for sale, |
| 427 | import and otherwise run, modify and propagate the contents of its contributor |
| 428 | version. |
| 429 | |
| 430 | In the following three paragraphs, a “patent license” is any express |
| 431 | agreement or commitment, however denominated, not to enforce a patent (such as an |
| 432 | express permission to practice a patent or covenant not to sue for patent |
| 433 | infringement). To “grant” such a patent license to a party means to make |
| 434 | such an agreement or commitment not to enforce a patent against the party. |
| 435 | |
| 436 | If you convey a covered work, knowingly relying on a patent license, and the |
| 437 | Corresponding Source of the work is not available for anyone to copy, free of charge |
| 438 | and under the terms of this License, through a publicly available network server or |
| 439 | other readily accessible means, then you must either (1) cause the Corresponding |
| 440 | Source to be so available, or (2) arrange to deprive yourself of the benefit of the |
| 441 | patent license for this particular work, or (3) arrange, in a manner consistent with |
| 442 | the requirements of this License, to extend the patent license to downstream |
| 443 | recipients. “Knowingly relying” means you have actual knowledge that, but |
| 444 | for the patent license, your conveying the covered work in a country, or your |
| 445 | recipient's use of the covered work in a country, would infringe one or more |
| 446 | identifiable patents in that country that you have reason to believe are valid. |
| 447 | |
| 448 | If, pursuant to or in connection with a single transaction or arrangement, you |
| 449 | convey, or propagate by procuring conveyance of, a covered work, and grant a patent |
| 450 | license to some of the parties receiving the covered work authorizing them to use, |
| 451 | propagate, modify or convey a specific copy of the covered work, then the patent |
| 452 | license you grant is automatically extended to all recipients of the covered work and |
| 453 | works based on it. |
| 454 | |
| 455 | A patent license is “discriminatory” if it does not include within the |
| 456 | scope of its coverage, prohibits the exercise of, or is conditioned on the |
| 457 | non-exercise of one or more of the rights that are specifically granted under this |
| 458 | License. You may not convey a covered work if you are a party to an arrangement with |
| 459 | a third party that is in the business of distributing software, under which you make |
| 460 | payment to the third party based on the extent of your activity of conveying the |
| 461 | work, and under which the third party grants, to any of the parties who would receive |
| 462 | the covered work from you, a discriminatory patent license (a) in connection with |
| 463 | copies of the covered work conveyed by you (or copies made from those copies), or (b) |
| 464 | primarily for and in connection with specific products or compilations that contain |
| 465 | the covered work, unless you entered into that arrangement, or that patent license |
| 466 | was granted, prior to 28 March 2007. |
| 467 | |
| 468 | Nothing in this License shall be construed as excluding or limiting any implied |
| 469 | license or other defenses to infringement that may otherwise be available to you |
| 470 | under applicable patent law. |
| 471 | |
| 472 | ### 12. No Surrender of Others' Freedom. |
| 473 | |
| 474 | If conditions are imposed on you (whether by court order, agreement or otherwise) |
| 475 | that contradict the conditions of this License, they do not excuse you from the |
| 476 | conditions of this License. If you cannot convey a covered work so as to satisfy |
| 477 | simultaneously your obligations under this License and any other pertinent |
| 478 | obligations, then as a consequence you may not convey it at all. For example, if you |
| 479 | agree to terms that obligate you to collect a royalty for further conveying from |
| 480 | those to whom you convey the Program, the only way you could satisfy both those terms |
| 481 | and this License would be to refrain entirely from conveying the Program. |
| 482 | |
| 483 | ### 13. Use with the GNU Affero General Public License. |
| 484 | |
| 485 | Notwithstanding any other provision of this License, you have permission to link or |
| 486 | combine any covered work with a work licensed under version 3 of the GNU Affero |
| 487 | General Public License into a single combined work, and to convey the resulting work. |
| 488 | The terms of this License will continue to apply to the part which is the covered |
| 489 | work, but the special requirements of the GNU Affero General Public License, section |
| 490 | 13, concerning interaction through a network will apply to the combination as such. |
| 491 | |
| 492 | ### 14. Revised Versions of this License. |
| 493 | |
| 494 | The Free Software Foundation may publish revised and/or new versions of the GNU |
| 495 | General Public License from time to time. Such new versions will be similar in spirit |
| 496 | to the present version, but may differ in detail to address new problems or concerns. |
| 497 | |
| 498 | Each version is given a distinguishing version number. If the Program specifies that |
| 499 | a certain numbered version of the GNU General Public License “or any later |
| 500 | version” applies to it, you have the option of following the terms and |
| 501 | conditions either of that numbered version or of any later version published by the |
| 502 | Free Software Foundation. If the Program does not specify a version number of the GNU |
| 503 | General Public License, you may choose any version ever published by the Free |
| 504 | Software Foundation. |
| 505 | |
| 506 | If the Program specifies that a proxy can decide which future versions of the GNU |
| 507 | General Public License can be used, that proxy's public statement of acceptance of a |
| 508 | version permanently authorizes you to choose that version for the Program. |
| 509 | |
| 510 | Later license versions may give you additional or different permissions. However, no |
| 511 | additional obligations are imposed on any author or copyright holder as a result of |
| 512 | your choosing to follow a later version. |
| 513 | |
| 514 | ### 15. Disclaimer of Warranty. |
| 515 | |
| 516 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. |
| 517 | EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
| 518 | PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER |
| 519 | EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 520 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE |
| 521 | QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE |
| 522 | DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
| 523 | |
| 524 | ### 16. Limitation of Liability. |
| 525 | |
| 526 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY |
| 527 | COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS |
| 528 | PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, |
| 529 | INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE |
| 530 | PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE |
| 531 | OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE |
| 532 | WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
| 533 | POSSIBILITY OF SUCH DAMAGES. |
| 534 | |
| 535 | ### 17. Interpretation of Sections 15 and 16. |
| 536 | |
| 537 | If the disclaimer of warranty and limitation of liability provided above cannot be |
| 538 | given local legal effect according to their terms, reviewing courts shall apply local |
| 539 | law that most closely approximates an absolute waiver of all civil liability in |
| 540 | connection with the Program, unless a warranty or assumption of liability accompanies |
| 541 | a copy of the Program in return for a fee. |