| rev | line source | 
| igor@10 | 1                     GNU GENERAL PUBLIC LICENSE | 
| igor@10 | 2                        Version 3, 29 June 2007 | 
| igor@10 | 3 | 
| igor@10 | 4  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> | 
| igor@10 | 5  Everyone is permitted to copy and distribute verbatim copies | 
| igor@10 | 6  of this license document, but changing it is not allowed. | 
| igor@10 | 7 | 
| igor@10 | 8                             Preamble | 
| igor@10 | 9 | 
| igor@10 | 10   The GNU General Public License is a free, copyleft license for | 
| igor@10 | 11 software and other kinds of works. | 
| igor@10 | 12 | 
| igor@10 | 13   The licenses for most software and other practical works are designed | 
| igor@10 | 14 to take away your freedom to share and change the works.  By contrast, | 
| igor@10 | 15 the GNU General Public License is intended to guarantee your freedom to | 
| igor@10 | 16 share and change all versions of a program--to make sure it remains free | 
| igor@10 | 17 software for all its users.  We, the Free Software Foundation, use the | 
| igor@10 | 18 GNU General Public License for most of our software; it applies also to | 
| igor@10 | 19 any other work released this way by its authors.  You can apply it to | 
| igor@10 | 20 your programs, too. | 
| igor@10 | 21 | 
| igor@10 | 22   When we speak of free software, we are referring to freedom, not | 
| igor@10 | 23 price.  Our General Public Licenses are designed to make sure that you | 
| igor@10 | 24 have the freedom to distribute copies of free software (and charge for | 
| igor@10 | 25 them if you wish), that you receive source code or can get it if you | 
| igor@10 | 26 want it, that you can change the software or use pieces of it in new | 
| igor@10 | 27 free programs, and that you know you can do these things. | 
| igor@10 | 28 | 
| igor@10 | 29   To protect your rights, we need to prevent others from denying you | 
| igor@10 | 30 these rights or asking you to surrender the rights.  Therefore, you have | 
| igor@10 | 31 certain responsibilities if you distribute copies of the software, or if | 
| igor@10 | 32 you modify it: responsibilities to respect the freedom of others. | 
| igor@10 | 33 | 
| igor@10 | 34   For example, if you distribute copies of such a program, whether | 
| igor@10 | 35 gratis or for a fee, you must pass on to the recipients the same | 
| igor@10 | 36 freedoms that you received.  You must make sure that they, too, receive | 
| igor@10 | 37 or can get the source code.  And you must show them these terms so they | 
| igor@10 | 38 know their rights. | 
| igor@10 | 39 | 
| igor@10 | 40   Developers that use the GNU GPL protect your rights with two steps: | 
| igor@10 | 41 (1) assert copyright on the software, and (2) offer you this License | 
| igor@10 | 42 giving you legal permission to copy, distribute and/or modify it. | 
| igor@10 | 43 | 
| igor@10 | 44   For the developers' and authors' protection, the GPL clearly explains | 
| igor@10 | 45 that there is no warranty for this free software.  For both users' and | 
| igor@10 | 46 authors' sake, the GPL requires that modified versions be marked as | 
| igor@10 | 47 changed, so that their problems will not be attributed erroneously to | 
| igor@10 | 48 authors of previous versions. | 
| igor@10 | 49 | 
| igor@10 | 50   Some devices are designed to deny users access to install or run | 
| igor@10 | 51 modified versions of the software inside them, although the manufacturer | 
| igor@10 | 52 can do so.  This is fundamentally incompatible with the aim of | 
| igor@10 | 53 protecting users' freedom to change the software.  The systematic | 
| igor@10 | 54 pattern of such abuse occurs in the area of products for individuals to | 
| igor@10 | 55 use, which is precisely where it is most unacceptable.  Therefore, we | 
| igor@10 | 56 have designed this version of the GPL to prohibit the practice for those | 
| igor@10 | 57 products.  If such problems arise substantially in other domains, we | 
| igor@10 | 58 stand ready to extend this provision to those domains in future versions | 
| igor@10 | 59 of the GPL, as needed to protect the freedom of users. | 
| igor@10 | 60 | 
| igor@10 | 61   Finally, every program is threatened constantly by software patents. | 
| igor@10 | 62 States should not allow patents to restrict development and use of | 
| igor@10 | 63 software on general-purpose computers, but in those that do, we wish to | 
| igor@10 | 64 avoid the special danger that patents applied to a free program could | 
| igor@10 | 65 make it effectively proprietary.  To prevent this, the GPL assures that | 
| igor@10 | 66 patents cannot be used to render the program non-free. | 
| igor@10 | 67 | 
| igor@10 | 68   The precise terms and conditions for copying, distribution and | 
| igor@10 | 69 modification follow. | 
| igor@10 | 70 | 
| igor@10 | 71                        TERMS AND CONDITIONS | 
| igor@10 | 72 | 
| igor@10 | 73   0. Definitions. | 
| igor@10 | 74 | 
| igor@10 | 75   "This License" refers to version 3 of the GNU General Public License. | 
| igor@10 | 76 | 
| igor@10 | 77   "Copyright" also means copyright-like laws that apply to other kinds of | 
| igor@10 | 78 works, such as semiconductor masks. | 
| igor@10 | 79 | 
| igor@10 | 80   "The Program" refers to any copyrightable work licensed under this | 
| igor@10 | 81 License.  Each licensee is addressed as "you".  "Licensees" and | 
| igor@10 | 82 "recipients" may be individuals or organizations. | 
| igor@10 | 83 | 
| igor@10 | 84   To "modify" a work means to copy from or adapt all or part of the work | 
| igor@10 | 85 in a fashion requiring copyright permission, other than the making of an | 
| igor@10 | 86 exact copy.  The resulting work is called a "modified version" of the | 
| igor@10 | 87 earlier work or a work "based on" the earlier work. | 
| igor@10 | 88 | 
| igor@10 | 89   A "covered work" means either the unmodified Program or a work based | 
| igor@10 | 90 on the Program. | 
| igor@10 | 91 | 
| igor@10 | 92   To "propagate" a work means to do anything with it that, without | 
| igor@10 | 93 permission, would make you directly or secondarily liable for | 
| igor@10 | 94 infringement under applicable copyright law, except executing it on a | 
| igor@10 | 95 computer or modifying a private copy.  Propagation includes copying, | 
| igor@10 | 96 distribution (with or without modification), making available to the | 
| igor@10 | 97 public, and in some countries other activities as well. | 
| igor@10 | 98 | 
| igor@10 | 99   To "convey" a work means any kind of propagation that enables other | 
| igor@10 | 100 parties to make or receive copies.  Mere interaction with a user through | 
| igor@10 | 101 a computer network, with no transfer of a copy, is not conveying. | 
| igor@10 | 102 | 
| igor@10 | 103   An interactive user interface displays "Appropriate Legal Notices" | 
| igor@10 | 104 to the extent that it includes a convenient and prominently visible | 
| igor@10 | 105 feature that (1) displays an appropriate copyright notice, and (2) | 
| igor@10 | 106 tells the user that there is no warranty for the work (except to the | 
| igor@10 | 107 extent that warranties are provided), that licensees may convey the | 
| igor@10 | 108 work under this License, and how to view a copy of this License.  If | 
| igor@10 | 109 the interface presents a list of user commands or options, such as a | 
| igor@10 | 110 menu, a prominent item in the list meets this criterion. | 
| igor@10 | 111 | 
| igor@10 | 112   1. Source Code. | 
| igor@10 | 113 | 
| igor@10 | 114   The "source code" for a work means the preferred form of the work | 
| igor@10 | 115 for making modifications to it.  "Object code" means any non-source | 
| igor@10 | 116 form of a work. | 
| igor@10 | 117 | 
| igor@10 | 118   A "Standard Interface" means an interface that either is an official | 
| igor@10 | 119 standard defined by a recognized standards body, or, in the case of | 
| igor@10 | 120 interfaces specified for a particular programming language, one that | 
| igor@10 | 121 is widely used among developers working in that language. | 
| igor@10 | 122 | 
| igor@10 | 123   The "System Libraries" of an executable work include anything, other | 
| igor@10 | 124 than the work as a whole, that (a) is included in the normal form of | 
| igor@10 | 125 packaging a Major Component, but which is not part of that Major | 
| igor@10 | 126 Component, and (b) serves only to enable use of the work with that | 
| igor@10 | 127 Major Component, or to implement a Standard Interface for which an | 
| igor@10 | 128 implementation is available to the public in source code form.  A | 
| igor@10 | 129 "Major Component", in this context, means a major essential component | 
| igor@10 | 130 (kernel, window system, and so on) of the specific operating system | 
| igor@10 | 131 (if any) on which the executable work runs, or a compiler used to | 
| igor@10 | 132 produce the work, or an object code interpreter used to run it. | 
| igor@10 | 133 | 
| igor@10 | 134   The "Corresponding Source" for a work in object code form means all | 
| igor@10 | 135 the source code needed to generate, install, and (for an executable | 
| igor@10 | 136 work) run the object code and to modify the work, including scripts to | 
| igor@10 | 137 control those activities.  However, it does not include the work's | 
| igor@10 | 138 System Libraries, or general-purpose tools or generally available free | 
| igor@10 | 139 programs which are used unmodified in performing those activities but | 
| igor@10 | 140 which are not part of the work.  For example, Corresponding Source | 
| igor@10 | 141 includes interface definition files associated with source files for | 
| igor@10 | 142 the work, and the source code for shared libraries and dynamically | 
| igor@10 | 143 linked subprograms that the work is specifically designed to require, | 
| igor@10 | 144 such as by intimate data communication or control flow between those | 
| igor@10 | 145 subprograms and other parts of the work. | 
| igor@10 | 146 | 
| igor@10 | 147   The Corresponding Source need not include anything that users | 
| igor@10 | 148 can regenerate automatically from other parts of the Corresponding | 
| igor@10 | 149 Source. | 
| igor@10 | 150 | 
| igor@10 | 151   The Corresponding Source for a work in source code form is that | 
| igor@10 | 152 same work. | 
| igor@10 | 153 | 
| igor@10 | 154   2. Basic Permissions. | 
| igor@10 | 155 | 
| igor@10 | 156   All rights granted under this License are granted for the term of | 
| igor@10 | 157 copyright on the Program, and are irrevocable provided the stated | 
| igor@10 | 158 conditions are met.  This License explicitly affirms your unlimited | 
| igor@10 | 159 permission to run the unmodified Program.  The output from running a | 
| igor@10 | 160 covered work is covered by this License only if the output, given its | 
| igor@10 | 161 content, constitutes a covered work.  This License acknowledges your | 
| igor@10 | 162 rights of fair use or other equivalent, as provided by copyright law. | 
| igor@10 | 163 | 
| igor@10 | 164   You may make, run and propagate covered works that you do not | 
| igor@10 | 165 convey, without conditions so long as your license otherwise remains | 
| igor@10 | 166 in force.  You may convey covered works to others for the sole purpose | 
| igor@10 | 167 of having them make modifications exclusively for you, or provide you | 
| igor@10 | 168 with facilities for running those works, provided that you comply with | 
| igor@10 | 169 the terms of this License in conveying all material for which you do | 
| igor@10 | 170 not control copyright.  Those thus making or running the covered works | 
| igor@10 | 171 for you must do so exclusively on your behalf, under your direction | 
| igor@10 | 172 and control, on terms that prohibit them from making any copies of | 
| igor@10 | 173 your copyrighted material outside their relationship with you. | 
| igor@10 | 174 | 
| igor@10 | 175   Conveying under any other circumstances is permitted solely under | 
| igor@10 | 176 the conditions stated below.  Sublicensing is not allowed; section 10 | 
| igor@10 | 177 makes it unnecessary. | 
| igor@10 | 178 | 
| igor@10 | 179   3. Protecting Users' Legal Rights From Anti-Circumvention Law. | 
| igor@10 | 180 | 
| igor@10 | 181   No covered work shall be deemed part of an effective technological | 
| igor@10 | 182 measure under any applicable law fulfilling obligations under article | 
| igor@10 | 183 11 of the WIPO copyright treaty adopted on 20 December 1996, or | 
| igor@10 | 184 similar laws prohibiting or restricting circumvention of such | 
| igor@10 | 185 measures. | 
| igor@10 | 186 | 
| igor@10 | 187   When you convey a covered work, you waive any legal power to forbid | 
| igor@10 | 188 circumvention of technological measures to the extent such circumvention | 
| igor@10 | 189 is effected by exercising rights under this License with respect to | 
| igor@10 | 190 the covered work, and you disclaim any intention to limit operation or | 
| igor@10 | 191 modification of the work as a means of enforcing, against the work's | 
| igor@10 | 192 users, your or third parties' legal rights to forbid circumvention of | 
| igor@10 | 193 technological measures. | 
| igor@10 | 194 | 
| igor@10 | 195   4. Conveying Verbatim Copies. | 
| igor@10 | 196 | 
| igor@10 | 197   You may convey verbatim copies of the Program's source code as you | 
| igor@10 | 198 receive it, in any medium, provided that you conspicuously and | 
| igor@10 | 199 appropriately publish on each copy an appropriate copyright notice; | 
| igor@10 | 200 keep intact all notices stating that this License and any | 
| igor@10 | 201 non-permissive terms added in accord with section 7 apply to the code; | 
| igor@10 | 202 keep intact all notices of the absence of any warranty; and give all | 
| igor@10 | 203 recipients a copy of this License along with the Program. | 
| igor@10 | 204 | 
| igor@10 | 205   You may charge any price or no price for each copy that you convey, | 
| igor@10 | 206 and you may offer support or warranty protection for a fee. | 
| igor@10 | 207 | 
| igor@10 | 208   5. Conveying Modified Source Versions. | 
| igor@10 | 209 | 
| igor@10 | 210   You may convey a work based on the Program, or the modifications to | 
| igor@10 | 211 produce it from the Program, in the form of source code under the | 
| igor@10 | 212 terms of section 4, provided that you also meet all of these conditions: | 
| igor@10 | 213 | 
| igor@10 | 214     a) The work must carry prominent notices stating that you modified | 
| igor@10 | 215     it, and giving a relevant date. | 
| igor@10 | 216 | 
| igor@10 | 217     b) The work must carry prominent notices stating that it is | 
| igor@10 | 218     released under this License and any conditions added under section | 
| igor@10 | 219     7.  This requirement modifies the requirement in section 4 to | 
| igor@10 | 220     "keep intact all notices". | 
| igor@10 | 221 | 
| igor@10 | 222     c) You must license the entire work, as a whole, under this | 
| igor@10 | 223     License to anyone who comes into possession of a copy.  This | 
| igor@10 | 224     License will therefore apply, along with any applicable section 7 | 
| igor@10 | 225     additional terms, to the whole of the work, and all its parts, | 
| igor@10 | 226     regardless of how they are packaged.  This License gives no | 
| igor@10 | 227     permission to license the work in any other way, but it does not | 
| igor@10 | 228     invalidate such permission if you have separately received it. | 
| igor@10 | 229 | 
| igor@10 | 230     d) If the work has interactive user interfaces, each must display | 
| igor@10 | 231     Appropriate Legal Notices; however, if the Program has interactive | 
| igor@10 | 232     interfaces that do not display Appropriate Legal Notices, your | 
| igor@10 | 233     work need not make them do so. | 
| igor@10 | 234 | 
| igor@10 | 235   A compilation of a covered work with other separate and independent | 
| igor@10 | 236 works, which are not by their nature extensions of the covered work, | 
| igor@10 | 237 and which are not combined with it such as to form a larger program, | 
| igor@10 | 238 in or on a volume of a storage or distribution medium, is called an | 
| igor@10 | 239 "aggregate" if the compilation and its resulting copyright are not | 
| igor@10 | 240 used to limit the access or legal rights of the compilation's users | 
| igor@10 | 241 beyond what the individual works permit.  Inclusion of a covered work | 
| igor@10 | 242 in an aggregate does not cause this License to apply to the other | 
| igor@10 | 243 parts of the aggregate. | 
| igor@10 | 244 | 
| igor@10 | 245   6. Conveying Non-Source Forms. | 
| igor@10 | 246 | 
| igor@10 | 247   You may convey a covered work in object code form under the terms | 
| igor@10 | 248 of sections 4 and 5, provided that you also convey the | 
| igor@10 | 249 machine-readable Corresponding Source under the terms of this License, | 
| igor@10 | 250 in one of these ways: | 
| igor@10 | 251 | 
| igor@10 | 252     a) Convey the object code in, or embodied in, a physical product | 
| igor@10 | 253     (including a physical distribution medium), accompanied by the | 
| igor@10 | 254     Corresponding Source fixed on a durable physical medium | 
| igor@10 | 255     customarily used for software interchange. | 
| igor@10 | 256 | 
| igor@10 | 257     b) Convey the object code in, or embodied in, a physical product | 
| igor@10 | 258     (including a physical distribution medium), accompanied by a | 
| igor@10 | 259     written offer, valid for at least three years and valid for as | 
| igor@10 | 260     long as you offer spare parts or customer support for that product | 
| igor@10 | 261     model, to give anyone who possesses the object code either (1) a | 
| igor@10 | 262     copy of the Corresponding Source for all the software in the | 
| igor@10 | 263     product that is covered by this License, on a durable physical | 
| igor@10 | 264     medium customarily used for software interchange, for a price no | 
| igor@10 | 265     more than your reasonable cost of physically performing this | 
| igor@10 | 266     conveying of source, or (2) access to copy the | 
| igor@10 | 267     Corresponding Source from a network server at no charge. | 
| igor@10 | 268 | 
| igor@10 | 269     c) Convey individual copies of the object code with a copy of the | 
| igor@10 | 270     written offer to provide the Corresponding Source.  This | 
| igor@10 | 271     alternative is allowed only occasionally and noncommercially, and | 
| igor@10 | 272     only if you received the object code with such an offer, in accord | 
| igor@10 | 273     with subsection 6b. | 
| igor@10 | 274 | 
| igor@10 | 275     d) Convey the object code by offering access from a designated | 
| igor@10 | 276     place (gratis or for a charge), and offer equivalent access to the | 
| igor@10 | 277     Corresponding Source in the same way through the same place at no | 
| igor@10 | 278     further charge.  You need not require recipients to copy the | 
| igor@10 | 279     Corresponding Source along with the object code.  If the place to | 
| igor@10 | 280     copy the object code is a network server, the Corresponding Source | 
| igor@10 | 281     may be on a different server (operated by you or a third party) | 
| igor@10 | 282     that supports equivalent copying facilities, provided you maintain | 
| igor@10 | 283     clear directions next to the object code saying where to find the | 
| igor@10 | 284     Corresponding Source.  Regardless of what server hosts the | 
| igor@10 | 285     Corresponding Source, you remain obligated to ensure that it is | 
| igor@10 | 286     available for as long as needed to satisfy these requirements. | 
| igor@10 | 287 | 
| igor@10 | 288     e) Convey the object code using peer-to-peer transmission, provided | 
| igor@10 | 289     you inform other peers where the object code and Corresponding | 
| igor@10 | 290     Source of the work are being offered to the general public at no | 
| igor@10 | 291     charge under subsection 6d. | 
| igor@10 | 292 | 
| igor@10 | 293   A separable portion of the object code, whose source code is excluded | 
| igor@10 | 294 from the Corresponding Source as a System Library, need not be | 
| igor@10 | 295 included in conveying the object code work. | 
| igor@10 | 296 | 
| igor@10 | 297   A "User Product" is either (1) a "consumer product", which means any | 
| igor@10 | 298 tangible personal property which is normally used for personal, family, | 
| igor@10 | 299 or household purposes, or (2) anything designed or sold for incorporation | 
| igor@10 | 300 into a dwelling.  In determining whether a product is a consumer product, | 
| igor@10 | 301 doubtful cases shall be resolved in favor of coverage.  For a particular | 
| igor@10 | 302 product received by a particular user, "normally used" refers to a | 
| igor@10 | 303 typical or common use of that class of product, regardless of the status | 
| igor@10 | 304 of the particular user or of the way in which the particular user | 
| igor@10 | 305 actually uses, or expects or is expected to use, the product.  A product | 
| igor@10 | 306 is a consumer product regardless of whether the product has substantial | 
| igor@10 | 307 commercial, industrial or non-consumer uses, unless such uses represent | 
| igor@10 | 308 the only significant mode of use of the product. | 
| igor@10 | 309 | 
| igor@10 | 310   "Installation Information" for a User Product means any methods, | 
| igor@10 | 311 procedures, authorization keys, or other information required to install | 
| igor@10 | 312 and execute modified versions of a covered work in that User Product from | 
| igor@10 | 313 a modified version of its Corresponding Source.  The information must | 
| igor@10 | 314 suffice to ensure that the continued functioning of the modified object | 
| igor@10 | 315 code is in no case prevented or interfered with solely because | 
| igor@10 | 316 modification has been made. | 
| igor@10 | 317 | 
| igor@10 | 318   If you convey an object code work under this section in, or with, or | 
| igor@10 | 319 specifically for use in, a User Product, and the conveying occurs as | 
| igor@10 | 320 part of a transaction in which the right of possession and use of the | 
| igor@10 | 321 User Product is transferred to the recipient in perpetuity or for a | 
| igor@10 | 322 fixed term (regardless of how the transaction is characterized), the | 
| igor@10 | 323 Corresponding Source conveyed under this section must be accompanied | 
| igor@10 | 324 by the Installation Information.  But this requirement does not apply | 
| igor@10 | 325 if neither you nor any third party retains the ability to install | 
| igor@10 | 326 modified object code on the User Product (for example, the work has | 
| igor@10 | 327 been installed in ROM). | 
| igor@10 | 328 | 
| igor@10 | 329   The requirement to provide Installation Information does not include a | 
| igor@10 | 330 requirement to continue to provide support service, warranty, or updates | 
| igor@10 | 331 for a work that has been modified or installed by the recipient, or for | 
| igor@10 | 332 the User Product in which it has been modified or installed.  Access to a | 
| igor@10 | 333 network may be denied when the modification itself materially and | 
| igor@10 | 334 adversely affects the operation of the network or violates the rules and | 
| igor@10 | 335 protocols for communication across the network. | 
| igor@10 | 336 | 
| igor@10 | 337   Corresponding Source conveyed, and Installation Information provided, | 
| igor@10 | 338 in accord with this section must be in a format that is publicly | 
| igor@10 | 339 documented (and with an implementation available to the public in | 
| igor@10 | 340 source code form), and must require no special password or key for | 
| igor@10 | 341 unpacking, reading or copying. | 
| igor@10 | 342 | 
| igor@10 | 343   7. Additional Terms. | 
| igor@10 | 344 | 
| igor@10 | 345   "Additional permissions" are terms that supplement the terms of this | 
| igor@10 | 346 License by making exceptions from one or more of its conditions. | 
| igor@10 | 347 Additional permissions that are applicable to the entire Program shall | 
| igor@10 | 348 be treated as though they were included in this License, to the extent | 
| igor@10 | 349 that they are valid under applicable law.  If additional permissions | 
| igor@10 | 350 apply only to part of the Program, that part may be used separately | 
| igor@10 | 351 under those permissions, but the entire Program remains governed by | 
| igor@10 | 352 this License without regard to the additional permissions. | 
| igor@10 | 353 | 
| igor@10 | 354   When you convey a copy of a covered work, you may at your option | 
| igor@10 | 355 remove any additional permissions from that copy, or from any part of | 
| igor@10 | 356 it.  (Additional permissions may be written to require their own | 
| igor@10 | 357 removal in certain cases when you modify the work.)  You may place | 
| igor@10 | 358 additional permissions on material, added by you to a covered work, | 
| igor@10 | 359 for which you have or can give appropriate copyright permission. | 
| igor@10 | 360 | 
| igor@10 | 361   Notwithstanding any other provision of this License, for material you | 
| igor@10 | 362 add to a covered work, you may (if authorized by the copyright holders of | 
| igor@10 | 363 that material) supplement the terms of this License with terms: | 
| igor@10 | 364 | 
| igor@10 | 365     a) Disclaiming warranty or limiting liability differently from the | 
| igor@10 | 366     terms of sections 15 and 16 of this License; or | 
| igor@10 | 367 | 
| igor@10 | 368     b) Requiring preservation of specified reasonable legal notices or | 
| igor@10 | 369     author attributions in that material or in the Appropriate Legal | 
| igor@10 | 370     Notices displayed by works containing it; or | 
| igor@10 | 371 | 
| igor@10 | 372     c) Prohibiting misrepresentation of the origin of that material, or | 
| igor@10 | 373     requiring that modified versions of such material be marked in | 
| igor@10 | 374     reasonable ways as different from the original version; or | 
| igor@10 | 375 | 
| igor@10 | 376     d) Limiting the use for publicity purposes of names of licensors or | 
| igor@10 | 377     authors of the material; or | 
| igor@10 | 378 | 
| igor@10 | 379     e) Declining to grant rights under trademark law for use of some | 
| igor@10 | 380     trade names, trademarks, or service marks; or | 
| igor@10 | 381 | 
| igor@10 | 382     f) Requiring indemnification of licensors and authors of that | 
| igor@10 | 383     material by anyone who conveys the material (or modified versions of | 
| igor@10 | 384     it) with contractual assumptions of liability to the recipient, for | 
| igor@10 | 385     any liability that these contractual assumptions directly impose on | 
| igor@10 | 386     those licensors and authors. | 
| igor@10 | 387 | 
| igor@10 | 388   All other non-permissive additional terms are considered "further | 
| igor@10 | 389 restrictions" within the meaning of section 10.  If the Program as you | 
| igor@10 | 390 received it, or any part of it, contains a notice stating that it is | 
| igor@10 | 391 governed by this License along with a term that is a further | 
| igor@10 | 392 restriction, you may remove that term.  If a license document contains | 
| igor@10 | 393 a further restriction but permits relicensing or conveying under this | 
| igor@10 | 394 License, you may add to a covered work material governed by the terms | 
| igor@10 | 395 of that license document, provided that the further restriction does | 
| igor@10 | 396 not survive such relicensing or conveying. | 
| igor@10 | 397 | 
| igor@10 | 398   If you add terms to a covered work in accord with this section, you | 
| igor@10 | 399 must place, in the relevant source files, a statement of the | 
| igor@10 | 400 additional terms that apply to those files, or a notice indicating | 
| igor@10 | 401 where to find the applicable terms. | 
| igor@10 | 402 | 
| igor@10 | 403   Additional terms, permissive or non-permissive, may be stated in the | 
| igor@10 | 404 form of a separately written license, or stated as exceptions; | 
| igor@10 | 405 the above requirements apply either way. | 
| igor@10 | 406 | 
| igor@10 | 407   8. Termination. | 
| igor@10 | 408 | 
| igor@10 | 409   You may not propagate or modify a covered work except as expressly | 
| igor@10 | 410 provided under this License.  Any attempt otherwise to propagate or | 
| igor@10 | 411 modify it is void, and will automatically terminate your rights under | 
| igor@10 | 412 this License (including any patent licenses granted under the third | 
| igor@10 | 413 paragraph of section 11). | 
| igor@10 | 414 | 
| igor@10 | 415   However, if you cease all violation of this License, then your | 
| igor@10 | 416 license from a particular copyright holder is reinstated (a) | 
| igor@10 | 417 provisionally, unless and until the copyright holder explicitly and | 
| igor@10 | 418 finally terminates your license, and (b) permanently, if the copyright | 
| igor@10 | 419 holder fails to notify you of the violation by some reasonable means | 
| igor@10 | 420 prior to 60 days after the cessation. | 
| igor@10 | 421 | 
| igor@10 | 422   Moreover, your license from a particular copyright holder is | 
| igor@10 | 423 reinstated permanently if the copyright holder notifies you of the | 
| igor@10 | 424 violation by some reasonable means, this is the first time you have | 
| igor@10 | 425 received notice of violation of this License (for any work) from that | 
| igor@10 | 426 copyright holder, and you cure the violation prior to 30 days after | 
| igor@10 | 427 your receipt of the notice. | 
| igor@10 | 428 | 
| igor@10 | 429   Termination of your rights under this section does not terminate the | 
| igor@10 | 430 licenses of parties who have received copies or rights from you under | 
| igor@10 | 431 this License.  If your rights have been terminated and not permanently | 
| igor@10 | 432 reinstated, you do not qualify to receive new licenses for the same | 
| igor@10 | 433 material under section 10. | 
| igor@10 | 434 | 
| igor@10 | 435   9. Acceptance Not Required for Having Copies. | 
| igor@10 | 436 | 
| igor@10 | 437   You are not required to accept this License in order to receive or | 
| igor@10 | 438 run a copy of the Program.  Ancillary propagation of a covered work | 
| igor@10 | 439 occurring solely as a consequence of using peer-to-peer transmission | 
| igor@10 | 440 to receive a copy likewise does not require acceptance.  However, | 
| igor@10 | 441 nothing other than this License grants you permission to propagate or | 
| igor@10 | 442 modify any covered work.  These actions infringe copyright if you do | 
| igor@10 | 443 not accept this License.  Therefore, by modifying or propagating a | 
| igor@10 | 444 covered work, you indicate your acceptance of this License to do so. | 
| igor@10 | 445 | 
| igor@10 | 446   10. Automatic Licensing of Downstream Recipients. | 
| igor@10 | 447 | 
| igor@10 | 448   Each time you convey a covered work, the recipient automatically | 
| igor@10 | 449 receives a license from the original licensors, to run, modify and | 
| igor@10 | 450 propagate that work, subject to this License.  You are not responsible | 
| igor@10 | 451 for enforcing compliance by third parties with this License. | 
| igor@10 | 452 | 
| igor@10 | 453   An "entity transaction" is a transaction transferring control of an | 
| igor@10 | 454 organization, or substantially all assets of one, or subdividing an | 
| igor@10 | 455 organization, or merging organizations.  If propagation of a covered | 
| igor@10 | 456 work results from an entity transaction, each party to that | 
| igor@10 | 457 transaction who receives a copy of the work also receives whatever | 
| igor@10 | 458 licenses to the work the party's predecessor in interest had or could | 
| igor@10 | 459 give under the previous paragraph, plus a right to possession of the | 
| igor@10 | 460 Corresponding Source of the work from the predecessor in interest, if | 
| igor@10 | 461 the predecessor has it or can get it with reasonable efforts. | 
| igor@10 | 462 | 
| igor@10 | 463   You may not impose any further restrictions on the exercise of the | 
| igor@10 | 464 rights granted or affirmed under this License.  For example, you may | 
| igor@10 | 465 not impose a license fee, royalty, or other charge for exercise of | 
| igor@10 | 466 rights granted under this License, and you may not initiate litigation | 
| igor@10 | 467 (including a cross-claim or counterclaim in a lawsuit) alleging that | 
| igor@10 | 468 any patent claim is infringed by making, using, selling, offering for | 
| igor@10 | 469 sale, or importing the Program or any portion of it. | 
| igor@10 | 470 | 
| igor@10 | 471   11. Patents. | 
| igor@10 | 472 | 
| igor@10 | 473   A "contributor" is a copyright holder who authorizes use under this | 
| igor@10 | 474 License of the Program or a work on which the Program is based.  The | 
| igor@10 | 475 work thus licensed is called the contributor's "contributor version". | 
| igor@10 | 476 | 
| igor@10 | 477   A contributor's "essential patent claims" are all patent claims | 
| igor@10 | 478 owned or controlled by the contributor, whether already acquired or | 
| igor@10 | 479 hereafter acquired, that would be infringed by some manner, permitted | 
| igor@10 | 480 by this License, of making, using, or selling its contributor version, | 
| igor@10 | 481 but do not include claims that would be infringed only as a | 
| igor@10 | 482 consequence of further modification of the contributor version.  For | 
| igor@10 | 483 purposes of this definition, "control" includes the right to grant | 
| igor@10 | 484 patent sublicenses in a manner consistent with the requirements of | 
| igor@10 | 485 this License. | 
| igor@10 | 486 | 
| igor@10 | 487   Each contributor grants you a non-exclusive, worldwide, royalty-free | 
| igor@10 | 488 patent license under the contributor's essential patent claims, to | 
| igor@10 | 489 make, use, sell, offer for sale, import and otherwise run, modify and | 
| igor@10 | 490 propagate the contents of its contributor version. | 
| igor@10 | 491 | 
| igor@10 | 492   In the following three paragraphs, a "patent license" is any express | 
| igor@10 | 493 agreement or commitment, however denominated, not to enforce a patent | 
| igor@10 | 494 (such as an express permission to practice a patent or covenant not to | 
| igor@10 | 495 sue for patent infringement).  To "grant" such a patent license to a | 
| igor@10 | 496 party means to make such an agreement or commitment not to enforce a | 
| igor@10 | 497 patent against the party. | 
| igor@10 | 498 | 
| igor@10 | 499   If you convey a covered work, knowingly relying on a patent license, | 
| igor@10 | 500 and the Corresponding Source of the work is not available for anyone | 
| igor@10 | 501 to copy, free of charge and under the terms of this License, through a | 
| igor@10 | 502 publicly available network server or other readily accessible means, | 
| igor@10 | 503 then you must either (1) cause the Corresponding Source to be so | 
| igor@10 | 504 available, or (2) arrange to deprive yourself of the benefit of the | 
| igor@10 | 505 patent license for this particular work, or (3) arrange, in a manner | 
| igor@10 | 506 consistent with the requirements of this License, to extend the patent | 
| igor@10 | 507 license to downstream recipients.  "Knowingly relying" means you have | 
| igor@10 | 508 actual knowledge that, but for the patent license, your conveying the | 
| igor@10 | 509 covered work in a country, or your recipient's use of the covered work | 
| igor@10 | 510 in a country, would infringe one or more identifiable patents in that | 
| igor@10 | 511 country that you have reason to believe are valid. | 
| igor@10 | 512 | 
| igor@10 | 513   If, pursuant to or in connection with a single transaction or | 
| igor@10 | 514 arrangement, you convey, or propagate by procuring conveyance of, a | 
| igor@10 | 515 covered work, and grant a patent license to some of the parties | 
| igor@10 | 516 receiving the covered work authorizing them to use, propagate, modify | 
| igor@10 | 517 or convey a specific copy of the covered work, then the patent license | 
| igor@10 | 518 you grant is automatically extended to all recipients of the covered | 
| igor@10 | 519 work and works based on it. | 
| igor@10 | 520 | 
| igor@10 | 521   A patent license is "discriminatory" if it does not include within | 
| igor@10 | 522 the scope of its coverage, prohibits the exercise of, or is | 
| igor@10 | 523 conditioned on the non-exercise of one or more of the rights that are | 
| igor@10 | 524 specifically granted under this License.  You may not convey a covered | 
| igor@10 | 525 work if you are a party to an arrangement with a third party that is | 
| igor@10 | 526 in the business of distributing software, under which you make payment | 
| igor@10 | 527 to the third party based on the extent of your activity of conveying | 
| igor@10 | 528 the work, and under which the third party grants, to any of the | 
| igor@10 | 529 parties who would receive the covered work from you, a discriminatory | 
| igor@10 | 530 patent license (a) in connection with copies of the covered work | 
| igor@10 | 531 conveyed by you (or copies made from those copies), or (b) primarily | 
| igor@10 | 532 for and in connection with specific products or compilations that | 
| igor@10 | 533 contain the covered work, unless you entered into that arrangement, | 
| igor@10 | 534 or that patent license was granted, prior to 28 March 2007. | 
| igor@10 | 535 | 
| igor@10 | 536   Nothing in this License shall be construed as excluding or limiting | 
| igor@10 | 537 any implied license or other defenses to infringement that may | 
| igor@10 | 538 otherwise be available to you under applicable patent law. | 
| igor@10 | 539 | 
| igor@10 | 540   12. No Surrender of Others' Freedom. | 
| igor@10 | 541 | 
| igor@10 | 542   If conditions are imposed on you (whether by court order, agreement or | 
| igor@10 | 543 otherwise) that contradict the conditions of this License, they do not | 
| igor@10 | 544 excuse you from the conditions of this License.  If you cannot convey a | 
| igor@10 | 545 covered work so as to satisfy simultaneously your obligations under this | 
| igor@10 | 546 License and any other pertinent obligations, then as a consequence you may | 
| igor@10 | 547 not convey it at all.  For example, if you agree to terms that obligate you | 
| igor@10 | 548 to collect a royalty for further conveying from those to whom you convey | 
| igor@10 | 549 the Program, the only way you could satisfy both those terms and this | 
| igor@10 | 550 License would be to refrain entirely from conveying the Program. | 
| igor@10 | 551 | 
| igor@10 | 552   13. Use with the GNU Affero General Public License. | 
| igor@10 | 553 | 
| igor@10 | 554   Notwithstanding any other provision of this License, you have | 
| igor@10 | 555 permission to link or combine any covered work with a work licensed | 
| igor@10 | 556 under version 3 of the GNU Affero General Public License into a single | 
| igor@10 | 557 combined work, and to convey the resulting work.  The terms of this | 
| igor@10 | 558 License will continue to apply to the part which is the covered work, | 
| igor@10 | 559 but the special requirements of the GNU Affero General Public License, | 
| igor@10 | 560 section 13, concerning interaction through a network will apply to the | 
| igor@10 | 561 combination as such. | 
| igor@10 | 562 | 
| igor@10 | 563   14. Revised Versions of this License. | 
| igor@10 | 564 | 
| igor@10 | 565   The Free Software Foundation may publish revised and/or new versions of | 
| igor@10 | 566 the GNU General Public License from time to time.  Such new versions will | 
| igor@10 | 567 be similar in spirit to the present version, but may differ in detail to | 
| igor@10 | 568 address new problems or concerns. | 
| igor@10 | 569 | 
| igor@10 | 570   Each version is given a distinguishing version number.  If the | 
| igor@10 | 571 Program specifies that a certain numbered version of the GNU General | 
| igor@10 | 572 Public License "or any later version" applies to it, you have the | 
| igor@10 | 573 option of following the terms and conditions either of that numbered | 
| igor@10 | 574 version or of any later version published by the Free Software | 
| igor@10 | 575 Foundation.  If the Program does not specify a version number of the | 
| igor@10 | 576 GNU General Public License, you may choose any version ever published | 
| igor@10 | 577 by the Free Software Foundation. | 
| igor@10 | 578 | 
| igor@10 | 579   If the Program specifies that a proxy can decide which future | 
| igor@10 | 580 versions of the GNU General Public License can be used, that proxy's | 
| igor@10 | 581 public statement of acceptance of a version permanently authorizes you | 
| igor@10 | 582 to choose that version for the Program. | 
| igor@10 | 583 | 
| igor@10 | 584   Later license versions may give you additional or different | 
| igor@10 | 585 permissions.  However, no additional obligations are imposed on any | 
| igor@10 | 586 author or copyright holder as a result of your choosing to follow a | 
| igor@10 | 587 later version. | 
| igor@10 | 588 | 
| igor@10 | 589   15. Disclaimer of Warranty. | 
| igor@10 | 590 | 
| igor@10 | 591   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY | 
| igor@10 | 592 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT | 
| igor@10 | 593 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY | 
| igor@10 | 594 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, | 
| igor@10 | 595 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 
| igor@10 | 596 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM | 
| igor@10 | 597 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF | 
| igor@10 | 598 ALL NECESSARY SERVICING, REPAIR OR CORRECTION. | 
| igor@10 | 599 | 
| igor@10 | 600   16. Limitation of Liability. | 
| igor@10 | 601 | 
| igor@10 | 602   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING | 
| igor@10 | 603 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS | 
| igor@10 | 604 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY | 
| igor@10 | 605 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE | 
| igor@10 | 606 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF | 
| igor@10 | 607 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD | 
| igor@10 | 608 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), | 
| igor@10 | 609 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF | 
| igor@10 | 610 SUCH DAMAGES. | 
| igor@10 | 611 | 
| igor@10 | 612   17. Interpretation of Sections 15 and 16. | 
| igor@10 | 613 | 
| igor@10 | 614   If the disclaimer of warranty and limitation of liability provided | 
| igor@10 | 615 above cannot be given local legal effect according to their terms, | 
| igor@10 | 616 reviewing courts shall apply local law that most closely approximates | 
| igor@10 | 617 an absolute waiver of all civil liability in connection with the | 
| igor@10 | 618 Program, unless a warranty or assumption of liability accompanies a | 
| igor@10 | 619 copy of the Program in return for a fee. | 
| igor@10 | 620 | 
| igor@10 | 621                      END OF TERMS AND CONDITIONS | 
| igor@10 | 622 | 
| igor@10 | 623             How to Apply These Terms to Your New Programs | 
| igor@10 | 624 | 
| igor@10 | 625   If you develop a new program, and you want it to be of the greatest | 
| igor@10 | 626 possible use to the public, the best way to achieve this is to make it | 
| igor@10 | 627 free software which everyone can redistribute and change under these terms. | 
| igor@10 | 628 | 
| igor@10 | 629   To do so, attach the following notices to the program.  It is safest | 
| igor@10 | 630 to attach them to the start of each source file to most effectively | 
| igor@10 | 631 state the exclusion of warranty; and each file should have at least | 
| igor@10 | 632 the "copyright" line and a pointer to where the full notice is found. | 
| igor@10 | 633 | 
| igor@10 | 634     <one line to give the program's name and a brief idea of what it does.> | 
| igor@10 | 635     Copyright (C) <year>  <name of author> | 
| igor@10 | 636 | 
| igor@10 | 637     This program is free software: you can redistribute it and/or modify | 
| igor@10 | 638     it under the terms of the GNU General Public License as published by | 
| igor@10 | 639     the Free Software Foundation, either version 3 of the License, or | 
| igor@10 | 640     (at your option) any later version. | 
| igor@10 | 641 | 
| igor@10 | 642     This program is distributed in the hope that it will be useful, | 
| igor@10 | 643     but WITHOUT ANY WARRANTY; without even the implied warranty of | 
| igor@10 | 644     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
| igor@10 | 645     GNU General Public License for more details. | 
| igor@10 | 646 | 
| igor@10 | 647     You should have received a copy of the GNU General Public License | 
| igor@10 | 648     along with this program.  If not, see <http://www.gnu.org/licenses/>. | 
| igor@10 | 649 | 
| igor@10 | 650 Also add information on how to contact you by electronic and paper mail. | 
| igor@10 | 651 | 
| igor@10 | 652   If the program does terminal interaction, make it output a short | 
| igor@10 | 653 notice like this when it starts in an interactive mode: | 
| igor@10 | 654 | 
| igor@10 | 655     <program>  Copyright (C) <year>  <name of author> | 
| igor@10 | 656     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. | 
| igor@10 | 657     This is free software, and you are welcome to redistribute it | 
| igor@10 | 658     under certain conditions; type `show c' for details. | 
| igor@10 | 659 | 
| igor@10 | 660 The hypothetical commands `show w' and `show c' should show the appropriate | 
| igor@10 | 661 parts of the General Public License.  Of course, your program's commands | 
| igor@10 | 662 might be different; for a GUI interface, you would use an "about box". | 
| igor@10 | 663 | 
| igor@10 | 664   You should also get your employer (if you work as a programmer) or school, | 
| igor@10 | 665 if any, to sign a "copyright disclaimer" for the program, if necessary. | 
| igor@10 | 666 For more information on this, and how to apply and follow the GNU GPL, see | 
| igor@10 | 667 <http://www.gnu.org/licenses/>. | 
| igor@10 | 668 | 
| igor@10 | 669   The GNU General Public License does not permit incorporating your program | 
| igor@10 | 670 into proprietary programs.  If your program is a subroutine library, you | 
| igor@10 | 671 may consider it more useful to permit linking proprietary applications with | 
| igor@10 | 672 the library.  If this is what you want to do, use the GNU Lesser General | 
| igor@10 | 673 Public License instead of this License.  But first, please read | 
| igor@10 | 674 <http://www.gnu.org/philosophy/why-not-lgpl.html>. |