Preamble.html 7.1 KB

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  39. <a name="Preamble"></a>
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  57. <a name="Preamble-1"></a>
  58. <h2 class="unnumberedsec">Preamble</h2>
  59. <p> The licenses for most software are designed to take away your
  60. freedom to share and change it. By contrast, the GNU General Public
  61. License is intended to guarantee your freedom to share and change free
  62. software&mdash;to make sure the software is free for all its users. This
  63. General Public License applies to most of the Free Software
  64. Foundation&rsquo;s software and to any other program whose authors commit to
  65. using it. (Some other Free Software Foundation software is covered by
  66. the GNU Library General Public License instead.) You can apply it to
  67. your programs, too.
  68. </p>
  69. <p> When we speak of free software, we are referring to freedom, not
  70. price. Our General Public Licenses are designed to make sure that you
  71. have the freedom to distribute copies of free software (and charge for
  72. this service if you wish), that you receive source code or can get it
  73. if you want it, that you can change the software or use pieces of it
  74. in new free programs; and that you know you can do these things.
  75. </p>
  76. <p> To protect your rights, we need to make restrictions that forbid
  77. anyone to deny you these rights or to ask you to surrender the rights.
  78. These restrictions translate to certain responsibilities for you if you
  79. distribute copies of the software, or if you modify it.
  80. </p>
  81. <p> For example, if you distribute copies of such a program, whether
  82. gratis or for a fee, you must give the recipients all the rights that
  83. you have. You must make sure that they, too, receive or can get the
  84. source code. And you must show them these terms so they know their
  85. rights.
  86. </p>
  87. <p> We protect your rights with two steps: (1) copyright the software, and
  88. (2) offer you this license which gives you legal permission to copy,
  89. distribute and/or modify the software.
  90. </p>
  91. <p> Also, for each author&rsquo;s protection and ours, we want to make certain
  92. that everyone understands that there is no warranty for this free
  93. software. If the software is modified by someone else and passed on, we
  94. want its recipients to know that what they have is not the original, so
  95. that any problems introduced by others will not reflect on the original
  96. authors&rsquo; reputations.
  97. </p>
  98. <p> Finally, any free program is threatened constantly by software
  99. patents. We wish to avoid the danger that redistributors of a free
  100. program will individually obtain patent licenses, in effect making the
  101. program proprietary. To prevent this, we have made it clear that any
  102. patent must be licensed for everyone&rsquo;s free use or not licensed at all.
  103. </p>
  104. <p> The precise terms and conditions for copying, distribution and
  105. modification follow.
  106. </p>
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