1Terms of Perl itself 2 3a) the GNU General Public License as published by the Free 4 Software Foundation; either version 1, or (at your option) any 5 later version, or 6b) the "Artistic License" 7 8--------------------------------------------------------------------------- 9 10The General Public License (GPL) 11Version 2, June 1991 12 13Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, 14Cambridge, MA 02139, USA. Everyone is permitted to copy and distribute 15verbatim copies of this license document, but changing it is not allowed. 16 17Preamble 18 19The licenses for most software are designed to take away your freedom to share 20and change it. By contrast, the GNU General Public License is intended to 21guarantee your freedom to share and change free software--to make sure the 22software is free for all its users. This General Public License applies to most of 23the Free Software Foundation's software and to any other program whose 24authors commit to using it. (Some other Free Software Foundation software is 25covered by the GNU Library General Public License instead.) You can apply it to 26your programs, too. 27 28When we speak of free software, we are referring to freedom, not price. Our 29General Public Licenses are designed to make sure that you have the freedom 30to distribute copies of free software (and charge for this service if you wish), that 31you receive source code or can get it if you want it, that you can change the 32software or use pieces of it in new free programs; and that you know you can do 33these things. 34 35To protect your rights, we need to make restrictions that forbid anyone to deny 36you these rights or to ask you to surrender the rights. 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If the 51software is modified by someone else and passed on, we want its recipients to 52know that what they have is not the original, so that any problems introduced by 53others will not reflect on the original authors' reputations. 54 55Finally, any free program is threatened constantly by software patents. We wish 56to avoid the danger that redistributors of a free program will individually obtain 57patent licenses, in effect making the program proprietary. To prevent this, we 58have made it clear that any patent must be licensed for everyone's free use or 59not licensed at all. 60 61The precise terms and conditions for copying, distribution and modification 62follow. 63 64GNU GENERAL PUBLIC LICENSE 65TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND 66MODIFICATION 67 680. This License applies to any program or other work which contains a notice 69placed by the copyright holder saying it may be distributed under the terms of 70this General Public License. The "Program", below, refers to any such program 71or work, and a "work based on the Program" means either the Program or any 72derivative work under copyright law: that is to say, a work containing the 73Program or a portion of it, either verbatim or with modifications and/or translated 74into another language. (Hereinafter, translation is included without limitation in 75the term "modification".) Each licensee is addressed as "you". 76 77Activities other than copying, distribution and modification are not covered by 78this License; they are outside its scope. The act of running the Program is not 79restricted, and the output from the Program is covered only if its contents 80constitute a work based on the Program (independent of having been made by 81running the Program). Whether that is true depends on what the Program does. 82 831. You may copy and distribute verbatim copies of the Program's source code as 84you receive it, in any medium, provided that you conspicuously and appropriately 85publish on each copy an appropriate copyright notice and disclaimer of warranty; 86keep intact all the notices that refer to this License and to the absence of any 87warranty; and give any other recipients of the Program a copy of this License 88along with the Program. 89 90You may charge a fee for the physical act of transferring a copy, and you may at 91your option offer warranty protection in exchange for a fee. 92 932. You may modify your copy or copies of the Program or any portion of it, thus 94forming a work based on the Program, and copy and distribute such 95modifications or work under the terms of Section 1 above, provided that you also 96meet all of these conditions: 97 98a) You must cause the modified files to carry prominent notices stating that you 99changed the files and the date of any change. 100 101b) You must cause any work that you distribute or publish, that in whole or in 102part contains or is derived from the Program or any part thereof, to be licensed 103as a whole at no charge to all third parties under the terms of this License. 104 105c) If the modified program normally reads commands interactively when run, you 106must cause it, when started running for such interactive use in the most ordinary 107way, to print or display an announcement including an appropriate copyright 108notice and a notice that there is no warranty (or else, saying that you provide a 109warranty) and that users may redistribute the program under these conditions, 110and telling the user how to view a copy of this License. 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But when you distribute the same sections as part of a whole 119which is a work based on the Program, the distribution of the whole must be on 120the terms of this License, whose permissions for other licensees extend to the 121entire whole, and thus to each and every part regardless of who wrote it. 122 123Thus, it is not the intent of this section to claim rights or contest your rights to 124work written entirely by you; rather, the intent is to exercise the right to control 125the distribution of derivative or collective works based on the Program. 126 127In addition, mere aggregation of another work not based on the Program with the 128Program (or with a work based on the Program) on a volume of a storage or 129distribution medium does not bring the other work under the scope of this 130License. 131 1323. You may copy and distribute the Program (or a work based on it, under 133Section 2) in object code or executable form under the terms of Sections 1 and 2 134above provided that you also do one of the following: 135 136a) Accompany it with the complete corresponding machine-readable source 137code, which must be distributed under the terms of Sections 1 and 2 above on a 138medium customarily used for software interchange; or, 139 140b) Accompany it with a written offer, valid for at least three years, to give any 141third party, for a charge no more than your cost of physically performing source 142distribution, a complete machine-readable copy of the corresponding source 143code, to be distributed under the terms of Sections 1 and 2 above on a medium 144customarily used for software interchange; or, 145 146c) Accompany it with the information you received as to the offer to distribute 147corresponding source code. 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However, parties who have received copies, or 170rights, from you under this License will not have their licenses terminated so long 171as such parties remain in full compliance. 172 1735. You are not required to accept this License, since you have not signed it. 174However, nothing else grants you permission to modify or distribute the Program 175or its derivative works. These actions are prohibited by law if you do not accept 176this License. Therefore, by modifying or distributing the Program (or any work 177based on the Program), you indicate your acceptance of this License to do so, 178and all its terms and conditions for copying, distributing or modifying the 179Program or works based on it. 180 1816. Each time you redistribute the Program (or any work based on the Program), 182the recipient automatically receives a license from the original licensor to copy, 183distribute or modify the Program subject to these terms and conditions. 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The Free Software Foundation may publish revised and/or new versions of the 224General Public License from time to time. Such new versions will be similar in 225spirit to the present version, but may differ in detail to address new problems or 226concerns. 227 228Each version is given a distinguishing version number. If the Program specifies a 229version number of this License which applies to it and "any later version", you 230have the option of following the terms and conditions either of that version or of 231any later version published by the Free Software Foundation. If the Program does 232not specify a version number of this License, you may choose any version ever 233published by the Free Software Foundation. 234 23510. If you wish to incorporate parts of the Program into other free programs 236whose distribution conditions are different, write to the author to ask for 237permission. 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(You will not be required to justify it to the 304 Copyright Holder, but only to the computing community at large 305 as a market that must bear the fee.) 306 307 "Freely Available" means that no fee is charged for the item 308 itself, though there may be fees involved in handling the item. 309 It also means that recipients of the item may redistribute it 310 under the same conditions they received it. 311 3121. You may make and give away verbatim copies of the source form of the 313Standard Version of this Package without restriction, provided that you 314duplicate all of the original copyright notices and associated disclaimers. 315 3162. You may apply bug fixes, portability fixes and other modifications 317derived from the Public Domain or from the Copyright Holder. A Package 318modified in such a way shall still be considered the Standard Version. 319 3203. You may otherwise modify your copy of this Package in any way, provided 321that you insert a prominent notice in each changed file stating how and 322when you changed that file, and provided that you do at least ONE of the 323following: 324 325 a) place your modifications in the Public Domain or otherwise make them 326 Freely Available, such as by posting said modifications to Usenet or 327 an equivalent medium, or placing the modifications on a major archive 328 site such as uunet.uu.net, or by allowing the Copyright Holder to include 329 your modifications in the Standard Version of the Package. 330 331 b) use the modified Package only within your corporation or organization. 332 333 c) rename any non-standard executables so the names do not conflict 334 with standard executables, which must also be provided, and provide 335 a separate manual page for each non-standard executable that clearly 336 documents how it differs from the Standard Version. 337 338 d) make other distribution arrangements with the Copyright Holder. 339 3404. You may distribute the programs of this Package in object code or 341executable form, provided that you do at least ONE of the following: 342 343 a) distribute a Standard Version of the executables and library files, 344 together with instructions (in the manual page or equivalent) on where 345 to get the Standard Version. 346 347 b) accompany the distribution with the machine-readable source of 348 the Package with your modifications. 349 350 c) give non-standard executables non-standard names, and clearly 351 document the differences in manual pages (or equivalent), together 352 with instructions on where to get the Standard Version. 353 354 d) make other distribution arrangements with the Copyright Holder. 355 3565. You may charge a reasonable copying fee for any distribution of this 357Package. You may charge any fee you choose for support of this 358Package. You may not charge a fee for this Package itself. However, 359you may distribute this Package in aggregate with other (possibly 360commercial) programs as part of a larger (possibly commercial) software 361distribution provided that you do not advertise this Package as a 362product of your own. You may embed this Package's interpreter within 363an executable of yours (by linking); this shall be construed as a mere 364form of aggregation, provided that the complete Standard Version of the 365interpreter is so embedded. 366 3676. The scripts and library files supplied as input to or produced as 368output from the programs of this Package do not automatically fall 369under the copyright of this Package, but belong to whoever generated 370them, and may be sold commercially, and may be aggregated with this 371Package. If such scripts or library files are aggregated with this 372Package via the so-called "undump" or "unexec" methods of producing a 373binary executable image, then distribution of such an image shall 374neither be construed as a distribution of this Package nor shall it 375fall under the restrictions of Paragraphs 3 and 4, provided that you do 376not represent such an executable image as a Standard Version of this 377Package. 378 3797. C subroutines (or comparably compiled subroutines in other 380languages) supplied by you and linked into this Package in order to 381emulate subroutines and variables of the language defined by this 382Package shall not be considered part of this Package, but are the 383equivalent of input as in Paragraph 6, provided these subroutines do 384not change the language in any way that would cause it to fail the 385regression tests for the language. 386 3878. Aggregation of this Package with a commercial distribution is always 388permitted provided that the use of this Package is embedded; that is, 389when no overt attempt is made to make this Package's interfaces visible 390to the end user of the commercial distribution. Such use shall not be 391construed as a distribution of this Package. 392 3939. The name of the Copyright Holder may not be used to endorse or promote 394products derived from this software without specific prior written permission. 395 39610. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR 397IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 398WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 399 400 The End 401