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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><html><head><!-- Copyright 1996-8 Junkbusters Corporation --><!-- This work comes with NO WARRANTY --><!-- It may be redistributed and modified under the GNU GPL--><!-- See the body of http://www.junkbusters.com/ht/en/gpl.html for details--><!-- Junkbusters is a registered trade mark of Junkbusters Corporation --><!-- Generated 1998/10/31 03:58:25 UTC --><meta name="Generator" content="Junkbusters Ebira $Revision: 1.276 $ $Date: 1998/09/25 23:54:00 $"><!-- Document ID: $Revision: 2.732 $ $Date: 1998/10/31 03:58:20 $ --><title>The GNU General Public License</title><base href="http://www.junkbusters.com/ht/en/gpl.html"><meta name="description" content="We did not write the GPL: the Free Software Foundation did | The GPL allows copying and changing of copyrighted documents | Version 2, June 1991 | Preamble | GNU General Public License: Terms and Conditions for Copying, Distribution and Modification | Appendix: How to Apply These Terms to Your New Programs"><meta name="keywords" content="stop, junk, busters, junkbusters, junkbuster, mail, email, e-mail, direct, spam, spamoff, declare, telemarketing, telemarketers, privacy, sharing, names, renting, direct, marketing, database, databases, junk mail, lists, environment, conservation, recycling, catalogs, consumer, sending, opt out "><link rel="next" href="precre.html"><link rel="previous" href="precre.html"><link rel="contents" href="toc.html"></head><body bgcolor="#f8f8f0" link="#000078" alink="#ff0022" vlink="#787878"><p align="center"><a name="top_of_page" href="legal.html#marks"><img border=0 width=160 height=34 src="/images/trans_tn.gif" alt="Junkbusters"></a></p><center><h1>The GNU General Public License</h1></center><!-- Translators: no --><center><h2><a name="notus"><font face="arial, helvetica">We did not write the GPL: the Free Software Foundation did</font></a></h2></center><h3><a name="allows" href="/cgi-bin/gp?pg=gpl&pr=allows"><img border=0 width=14 height=14 src="/images/fb.gif" alt="<Feedback>"></a> The GPL allows copying and changing of copyrighted documents</h3><p><a name="fsf">The Free Software Foundation</a><a href="http://www.fsf.org/fsf/fsf.html">(FSF)</a>is a non-profit institutionthat designed the GNU General Public License (GPL) to promote thepublication of free software.The GPL is used by thousands of programmerswho want to give others the right to copy and modifythe source code of their programs. Millions of people benefit from this.<p><a name="junkbuster">We use the GPL</a>to allow everyone to use, copy and modify the<a href="ijb.html">Internet Junkbuster</a>as they wish.<a name="separate">Companies can use it for commercial purposes,</a>but they are not permitted to use it in products that they claimas their propertywithout negotiating a separate agreement with us beforehand.<p><a name="text">The GPL</a><a href="http://dsl.org/copyleft/">can also be used</a>on documents written in human languages.We give everyone permission to use everything on our web site under the GPL.This means that you do not have to break copyright laws in orderto print a page or email a screen of the text to someone, for example.Many sites do not permit you to do these things.<p><a name="best">If you have a home page,</a>we recommend that you consider using the GPL toallow others the right to copy and use all the documents you create for it.If you just mark a page as copyright, they won't evenlegally be able to print it.If you don't state you are its copyright owner,they could change it slightly and claim it as their own property. By marking it with both copyright and GPL noticesyou allow them to copy it but not to claimanything derived from it as their own.<p><a name="protect">The GPL protects your</a><a href="declare.html">J<small>UNK<i>BUSTERS</i></small> D<small>ECLARATION</small></a>,<a href="spamoff.html">Spam Offer</a>,and all documents from us that you publish on your home pageor distribute to direct marketers by any other means.By making yourD<small>ECLARATION</small>available to them under the GPL, you are<a href="precre.html#gpl">permitting them use to it, but never to claim it as their property,</a>even if they transform it.<p><a name="rest">The</a>remainder of this page is the text of the GPL.As legal documents go it's relatively clear,but unfortunately it's fairly long because it has to covera lot of details specific to computer programsthat may not be relevant toD<small>ECLARATION</small>s.The hypertext links are ours, and should not be misinterpretedas an indication of emphasis by the FSF.</p><p align="center"><a href="#top_of_page"><img border=0 width=250 height=15 src="/images/top.gif" alt="--- Back to Top of Page ---"></a></p><center><h2><a name="v2"><font face="arial, helvetica">Version 2, June 1991</font></a></h2></center><blockquote><a name="crn">Copyright 1989, 1991</a><br><a name="address">Free Software Foundation, Inc.</a><br>675 Mass Ave.<br>Cambridge, MA 02139<br>USA</blockquote><a name="changing">Everyone</a>is permitted to copy and distribute verbatim copiesof this license document, but changing it is not allowed.<h3><a name="pream" href="/cgi-bin/gp?pg=gpl&pr=pream"><img border=0 width=14 height=14 src="/images/fb.gif" alt="<Feedback>"></a> Preamble</h3><p>The licenses for most software are designed to take away yourfreedom to share and change it. By contrast, the GNU General PublicLicense is intended to guarantee your freedom to share and change freesoftware--to make sure the software is free for all its users. ThisGeneral Public License applies to most of the Free SoftwareFoundation's software and to any other program whose authors commit tousing it. (Some other Free Software Foundation software is covered bythe GNU Library General Public License instead.) You can apply it toyour programs, too.<p><a name="freedom">When we speak of free software,</a>we are referring to freedom, notprice. Our General Public Licenses are designed to make sure that youhave the freedom to distribute copies of free software (and charge forthis service if you wish), that you receive source code or can get itif you want it, that you can change the software or use pieces of itin new free programs; and that you know you can do these things.<p><a name="forbid">To protect your rights,</a>we need to make restrictions that forbidanyone to deny you these rights or to ask you to surrender the rights.These restrictions translate to certain responsibilities for you if youdistribute copies of the software, or if you modify it.<p><a name="allrights">For example,</a>if you distribute copies of such a program, whethergratis or for a fee, you must give the recipients all the rights thatyou have. You must make sure that they, too, receive or can get thesource code. And you must show them these terms so they know theirrights.<p><a name="steps">We protect your rights with two steps:</a>(1) copyright the software, and(2) offer you this license which gives you legal permission to copy,distribute and/or modify the software.<p><a name="protection">Also,</a>for each author's protection and ours, we want to make certainthat everyone understands that there is no warranty for this freesoftware. If the software is modified by someone else and passed on, wewant its recipients to know that what they have is not the original, sothat any problems introduced by others will not reflect on the originalauthors' reputations.<p><a name="threat">Finally,</a>any free program is threatened constantly by softwarepatents. We wish to avoid the danger that redistributors of a freeprogram will individually obtain patent licenses, in effect making theprogram proprietary. To prevent this, we have made it clear that anypatent must be licensed for everyone's free use or not licensed at all.<p><a name="terms">The precise terms and conditions</a>for copying, distribution andmodification follow.</p><h3><a name="tnc" href="/cgi-bin/gp?pg=gpl&pr=tnc"><img border=0 width=14 height=14 src="/images/fb.gif" alt="<Feedback>"></a> GNU General Public License: Terms and Conditions for Copying, Distribution and Modification</h3><p><a name="applies">O.</a>This License applies to any program or other work which containsa notice placed by the copyright holder saying it may be distributedunder the terms of this General Public License. The "Program", below,refers to any such program or work, and a "work based on the Program"means either the Program or any derivative work under copyright law:that is to say, a work containing the Program or a portion of it,either verbatim or with modifications and/or translated into anotherlanguage. (Hereinafter,<a href="bus-ops.html#trans">translation</a>is included without limitation inthe term "modification".) Each licensee is addressed as "you".<p><a name="scope">Activities</a><a href="faqs.html#copying">other than copying, distribution and modification are not covered by this License;</a>they are outside its scope. The act ofrunning the Program is not restricted, and the output from the Programis covered only if its contents constitute a work based on theProgram (independent of having been made by running the Program).<p><a name="depends">Whether that is true depends on what the Program does.</a><br><ol type="1"><li><a name="verbatim">You may copy</a>and distribute verbatim copies of the Program'ssource code as you receive it, in any medium, provided that youconspicuously and appropriately publish on each copy an appropriatecopyright notice and disclaimer of warranty; keep intact all thenotices that refer to this License and to the absence of any warranty;and give any other recipients of the Program a copy of this Licensealong with the Program.<p><a name="fee">You may charge a fee</a>for the physical act of transferring a copy, andyou may at your option offer warranty protection in exchange for a fee.<li><a name="modify">You may modify</a>your copy or copies of the Program or any portionof it, thus forming a work based on the Program, and copy anddistribute such modifications or work under the terms of Section 1above, provided that you also meet all of these conditions:<br><ol type="a"><li><a name="notices">You must cause</a>the modified files to carry prominent noticesstating that you changed the files and the date of any change.<li><a name="nocharge">You must</a>cause any work that you distribute or publish, that inwhole or in part contains or is derived from the Program or anypart thereof, to be licensed as a whole at no charge to all thirdparties under the terms of this License.<li><a name="interactive">If the modified program</a>normally reads commands interactivelywhen run, you must cause it, when started running for suchinteractive use in the most ordinary way, to print or display anannouncement including an appropriate copyright notice and anotice that there is no warranty (or else, saying that you providea warranty) and that users may redistribute the program underthese conditions, and telling the user how to view a copy of thisLicense. (Exception: if the Program itself is interactive butdoes not normally print such an announcement, your work based onthe Program is not required to print an announcement.)</ol><p><a name="sections">These requirements</a>apply to the modified work as a whole. Ifidentifiable sections of that work are not derived from the Program,and can be reasonably considered independent and separate works inthemselves, then this License, and its terms, do not apply to thosesections when you distribute them as separate works. But when youdistribute the same sections as part of a whole which is a work basedon the Program, the distribution of the whole must be on the terms ofthis License, whose permissions for other licensees extend to theentire whole, and thus to each and every part regardless of who wrote it.<p><a name="intent">Thus,</a>it is not the intent of this section to claim rights or contestyour rights to work written entirely by you; rather, the intent is toexercise the right to control the distribution of derivative orcollective works based on the Program.<p><a name="aggregation">In addition,</a>mere aggregation of another work not based on the Programwith the Program (or with a work based on the Program) on a volume ofa storage or distribution medium does not bring the other work underthe scope of this License.<li><a name="exeutable">You may copy</a>and distribute the Program (or a work based on it,under Section 2) in object code or executable form under the terms ofSections 1 and 2 above provided that you also do one of the following:<br><ol type="a"><li><a name="medium">Accompany it</a>with the complete corresponding machine-readable⌨️ 快捷键说明
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