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1 | 27839 | cmartinez | The GNU General Public License (GPL) |
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2 | |||
3 | Version 2, June 1991 |
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4 | |||
5 | Copyright (C) 1989, 1991 Free Software Foundation, Inc. |
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6 | 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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7 | |||
8 | Everyone is permitted to copy and distribute verbatim copies of this license |
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9 | document, but changing it is not allowed. |
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10 | |||
11 | Preamble |
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12 | |||
13 | The licenses for most software are designed to take away your freedom to share |
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14 | and change it. By contrast, the GNU General Public License is intended to |
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15 | guarantee your freedom to share and change free software--to make sure the |
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16 | software is free for all its users. This General Public License applies to |
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17 | most of the Free Software Foundation's software and to any other program whose |
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18 | authors commit to using it. (Some other Free Software Foundation software is |
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19 | covered by the GNU Library General Public License instead.) You can apply it to |
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20 | your programs, too. |
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21 | |||
22 | When we speak of free software, we are referring to freedom, not price. Our |
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23 | General Public Licenses are designed to make sure that you have the freedom to |
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24 | distribute copies of free software (and charge for this service if you wish), |
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25 | that you receive source code or can get it if you want it, that you can change |
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26 | the software or use pieces of it in new free programs; and that you know you |
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27 | can do these things. |
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28 | |||
29 | To protect your rights, we need to make restrictions that forbid anyone to deny |
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30 | you these rights or to ask you to surrender the rights. These restrictions |
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31 | translate to certain responsibilities for you if you distribute copies of the |
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32 | software, or if you modify it. |
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33 | |||
34 | For example, if you distribute copies of such a program, whether gratis or for |
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35 | a fee, you must give the recipients all the rights that you have. You must |
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36 | make sure that they, too, receive or can get the source code. And you must |
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37 | show them these terms so they know their rights. |
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38 | |||
39 | We protect your rights with two steps: (1) copyright the software, and (2) |
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40 | offer you this license which gives you legal permission to copy, distribute |
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41 | and/or modify the software. |
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42 | |||
43 | Also, for each author's protection and ours, we want to make certain that |
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44 | everyone understands that there is no warranty for this free software. If the |
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45 | software is modified by someone else and passed on, we want its recipients to |
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46 | know that what they have is not the original, so that any problems introduced |
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47 | by others will not reflect on the original authors' reputations. |
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48 | |||
49 | Finally, any free program is threatened constantly by software patents. We |
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50 | wish to avoid the danger that redistributors of a free program will |
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51 | individually obtain patent licenses, in effect making the program proprietary. |
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52 | To prevent this, we have made it clear that any patent must be licensed for |
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53 | everyone's free use or not licensed at all. |
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54 | |||
55 | The precise terms and conditions for copying, distribution and modification |
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56 | follow. |
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57 | |||
58 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
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59 | |||
60 | 0. This License applies to any program or other work which contains a notice |
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61 | placed by the copyright holder saying it may be distributed under the terms of |
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62 | this General Public License. The "Program", below, refers to any such program |
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63 | or work, and a "work based on the Program" means either the Program or any |
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64 | derivative work under copyright law: that is to say, a work containing the |
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65 | Program or a portion of it, either verbatim or with modifications and/or |
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66 | translated into another language. (Hereinafter, translation is included |
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67 | without limitation in the term "modification".) Each licensee is addressed as |
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68 | "you". |
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69 | |||
70 | Activities other than copying, distribution and modification are not covered by |
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71 | this License; they are outside its scope. The act of running the Program is |
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72 | not restricted, and the output from the Program is covered only if its contents |
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73 | constitute a work based on the Program (independent of having been made by |
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74 | running the Program). Whether that is true depends on what the Program does. |
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75 | |||
76 | 1. You may copy and distribute verbatim copies of the Program's source code as |
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77 | you receive it, in any medium, provided that you conspicuously and |
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78 | appropriately publish on each copy an appropriate copyright notice and |
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79 | disclaimer of warranty; keep intact all the notices that refer to this License |
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80 | and to the absence of any warranty; and give any other recipients of the |
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81 | Program a copy of this License along with the Program. |
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82 | |||
83 | You may charge a fee for the physical act of transferring a copy, and you may |
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84 | at your option offer warranty protection in exchange for a fee. |
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85 | |||
86 | 2. You may modify your copy or copies of the Program or any portion of it, thus |
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87 | forming a work based on the Program, and copy and distribute such modifications |
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88 | or work under the terms of Section 1 above, provided that you also meet all of |
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89 | these conditions: |
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90 | |||
91 | a) You must cause the modified files to carry prominent notices stating |
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92 | that you changed the files and the date of any change. |
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93 | |||
94 | b) You must cause any work that you distribute or publish, that in whole or |
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95 | in part contains or is derived from the Program or any part thereof, to be |
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96 | licensed as a whole at no charge to all third parties under the terms of |
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97 | this License. |
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98 | |||
99 | c) If the modified program normally reads commands interactively when run, |
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100 | you must cause it, when started running for such interactive use in the |
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101 | most ordinary way, to print or display an announcement including an |
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102 | appropriate copyright notice and a notice that there is no warranty (or |
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103 | else, saying that you provide a warranty) and that users may redistribute |
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104 | the program under these conditions, and telling the user how to view a copy |
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105 | of this License. (Exception: if the Program itself is interactive but does |
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106 | not normally print such an announcement, your work based on the Program is |
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107 | not required to print an announcement.) |
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108 | |||
109 | These requirements apply to the modified work as a whole. If identifiable |
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110 | sections of that work are not derived from the Program, and can be reasonably |
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111 | considered independent and separate works in themselves, then this License, and |
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112 | its terms, do not apply to those sections when you distribute them as separate |
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113 | works. But when you distribute the same sections as part of a whole which is a |
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114 | work based on the Program, the distribution of the whole must be on the terms |
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115 | of this License, whose permissions for other licensees extend to the entire |
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116 | whole, and thus to each and every part regardless of who wrote it. |
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117 | |||
118 | Thus, it is not the intent of this section to claim rights or contest your |
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119 | rights to work written entirely by you; rather, the intent is to exercise the |
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120 | right to control the distribution of derivative or collective works based on |
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121 | the Program. |
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122 | |||
123 | In addition, mere aggregation of another work not based on the Program with the |
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124 | Program (or with a work based on the Program) on a volume of a storage or |
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125 | distribution medium does not bring the other work under the scope of this |
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126 | License. |
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127 | |||
128 | 3. You may copy and distribute the Program (or a work based on it, under |
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129 | Section 2) in object code or executable form under the terms of Sections 1 and |
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130 | 2 above provided that you also do one of the following: |
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131 | |||
132 | a) Accompany it with the complete corresponding machine-readable source |
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133 | code, which must be distributed under the terms of Sections 1 and 2 above |
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134 | on a medium customarily used for software interchange; or, |
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135 | |||
136 | b) Accompany it with a written offer, valid for at least three years, to |
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137 | give any third party, for a charge no more than your cost of physically |
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138 | performing source distribution, a complete machine-readable copy of the |
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139 | corresponding source code, to be distributed under the terms of Sections 1 |
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140 | and 2 above on a medium customarily used for software interchange; or, |
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141 | |||
142 | c) Accompany it with the information you received as to the offer to |
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143 | distribute corresponding source code. (This alternative is allowed only |
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144 | for noncommercial distribution and only if you received the program in |
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145 | object code or executable form with such an offer, in accord with |
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146 | Subsection b above.) |
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147 | |||
148 | The source code for a work means the preferred form of the work for making |
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149 | modifications to it. For an executable work, complete source code means all |
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150 | the source code for all modules it contains, plus any associated interface |
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151 | definition files, plus the scripts used to control compilation and installation |
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152 | of the executable. However, as a special exception, the source code |
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153 | distributed need not include anything that is normally distributed (in either |
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154 | source or binary form) with the major components (compiler, kernel, and so on) |
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155 | of the operating system on which the executable runs, unless that component |
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156 | itself accompanies the executable. |
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157 | |||
158 | If distribution of executable or object code is made by offering access to copy |
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159 | from a designated place, then offering equivalent access to copy the source |
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160 | code from the same place counts as distribution of the source code, even though |
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161 | third parties are not compelled to copy the source along with the object code. |
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162 | |||
163 | 4. You may not copy, modify, sublicense, or distribute the Program except as |
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164 | expressly provided under this License. Any attempt otherwise to copy, modify, |
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165 | sublicense or distribute the Program is void, and will automatically terminate |
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166 | your rights under this License. However, parties who have received copies, or |
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167 | rights, from you under this License will not have their licenses terminated so |
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168 | long as such parties remain in full compliance. |
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169 | |||
170 | 5. You are not required to accept this License, since you have not signed it. |
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171 | However, nothing else grants you permission to modify or distribute the Program |
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172 | or its derivative works. These actions are prohibited by law if you do not |
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173 | accept this License. Therefore, by modifying or distributing the Program (or |
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174 | any work based on the Program), you indicate your acceptance of this License to |
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175 | do so, and all its terms and conditions for copying, distributing or modifying |
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176 | the Program or works based on it. |
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177 | |||
178 | 6. Each time you redistribute the Program (or any work based on the Program), |
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179 | the recipient automatically receives a license from the original licensor to |
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180 | copy, distribute or modify the Program subject to these terms and conditions. |
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181 | You may not impose any further restrictions on the recipients' exercise of the |
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182 | rights granted herein. You are not responsible for enforcing compliance by |
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183 | third parties to this License. |
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184 | |||
185 | 7. If, as a consequence of a court judgment or allegation of patent |
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186 | infringement or for any other reason (not limited to patent issues), conditions |
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187 | are imposed on you (whether by court order, agreement or otherwise) that |
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188 | contradict the conditions of this License, they do not excuse you from the |
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189 | conditions of this License. If you cannot distribute so as to satisfy |
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190 | simultaneously your obligations under this License and any other pertinent |
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191 | obligations, then as a consequence you may not distribute the Program at all. |
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192 | For example, if a patent license would not permit royalty-free redistribution |
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193 | of the Program by all those who receive copies directly or indirectly through |
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194 | you, then the only way you could satisfy both it and this License would be to |
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195 | refrain entirely from distribution of the Program. |
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196 | |||
197 | If any portion of this section is held invalid or unenforceable under any |
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198 | particular circumstance, the balance of the section is intended to apply and |
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199 | the section as a whole is intended to apply in other circumstances. |
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200 | |||
201 | It is not the purpose of this section to induce you to infringe any patents or |
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202 | other property right claims or to contest validity of any such claims; this |
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203 | section has the sole purpose of protecting the integrity of the free software |
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204 | distribution system, which is implemented by public license practices. Many |
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205 | people have made generous contributions to the wide range of software |
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206 | distributed through that system in reliance on consistent application of that |
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207 | system; it is up to the author/donor to decide if he or she is willing to |
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208 | distribute software through any other system and a licensee cannot impose that |
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209 | choice. |
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210 | |||
211 | This section is intended to make thoroughly clear what is believed to be a |
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212 | consequence of the rest of this License. |
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213 | |||
214 | 8. If the distribution and/or use of the Program is restricted in certain |
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215 | countries either by patents or by copyrighted interfaces, the original |
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216 | copyright holder who places the Program under this License may add an explicit |
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217 | geographical distribution limitation excluding those countries, so that |
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218 | distribution is permitted only in or among countries not thus excluded. In |
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219 | such case, this License incorporates the limitation as if written in the body |
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220 | of this License. |
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221 | |||
222 | 9. The Free Software Foundation may publish revised and/or new versions of the |
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223 | General Public License from time to time. Such new versions will be similar in |
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224 | spirit to the present version, but may differ in detail to address new problems |
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225 | or concerns. |
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226 | |||
227 | Each version is given a distinguishing version number. If the Program |
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228 | specifies a version number of this License which applies to it and "any later |
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229 | version", you have the option of following the terms and conditions either of |
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230 | that version or of any later version published by the Free Software Foundation. |
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231 | If the Program does not specify a version number of this License, you may |
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232 | choose any version ever published by the Free Software Foundation. |
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233 | |||
234 | 10. If you wish to incorporate parts of the Program into other free programs |
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235 | whose distribution conditions are different, write to the author to ask for |
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236 | permission. For software which is copyrighted by the Free Software Foundation, |
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237 | write to the Free Software Foundation; we sometimes make exceptions for this. |
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238 | Our decision will be guided by the two goals of preserving the free status of |
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239 | all derivatives of our free software and of promoting the sharing and reuse of |
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240 | software generally. |
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241 | |||
242 | NO WARRANTY |
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243 | |||
244 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR |
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245 | THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE |
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246 | STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE |
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247 | PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, |
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248 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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249 | FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND |
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250 | PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, |
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251 | YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
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252 | |||
253 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL |
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254 | ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE |
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255 | PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY |
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256 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR |
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257 | INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA |
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258 | BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A |
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259 | FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER |
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260 | OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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261 | |||
262 | END OF TERMS AND CONDITIONS |
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263 | |||
264 | How to Apply These Terms to Your New Programs |
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265 | |||
266 | If you develop a new program, and you want it to be of the greatest possible |
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267 | use to the public, the best way to achieve this is to make it free software |
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268 | which everyone can redistribute and change under these terms. |
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269 | |||
270 | To do so, attach the following notices to the program. It is safest to attach |
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271 | them to the start of each source file to most effectively convey the exclusion |
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272 | of warranty; and each file should have at least the "copyright" line and a |
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273 | pointer to where the full notice is found. |
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274 | |||
275 | One line to give the program's name and a brief idea of what it does. |
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276 | |||
277 | Copyright (C) <year> <name of author> |
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278 | |||
279 | This program is free software; you can redistribute it and/or modify it |
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280 | under the terms of the GNU General Public License as published by the Free |
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281 | Software Foundation; either version 2 of the License, or (at your option) |
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282 | any later version. |
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283 | |||
284 | This program is distributed in the hope that it will be useful, but WITHOUT |
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285 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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286 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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287 | more details. |
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288 | |||
289 | You should have received a copy of the GNU General Public License along |
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290 | with this program; if not, write to the Free Software Foundation, Inc., 59 |
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291 | Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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292 | |||
293 | Also add information on how to contact you by electronic and paper mail. |
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294 | |||
295 | If the program is interactive, make it output a short notice like this when it |
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296 | starts in an interactive mode: |
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297 | |||
298 | Gnomovision version 69, Copyright (C) year name of author Gnomovision comes |
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299 | with ABSOLUTELY NO WARRANTY; for details type 'show w'. This is free |
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300 | software, and you are welcome to redistribute it under certain conditions; |
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301 | type 'show c' for details. |
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302 | |||
303 | The hypothetical commands 'show w' and 'show c' should show the appropriate |
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304 | parts of the General Public License. Of course, the commands you use may be |
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305 | called something other than 'show w' and 'show c'; they could even be |
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306 | mouse-clicks or menu items--whatever suits your program. |
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307 | |||
308 | You should also get your employer (if you work as a programmer) or your school, |
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309 | if any, to sign a "copyright disclaimer" for the program, if necessary. Here |
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310 | is a sample; alter the names: |
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311 | |||
312 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program |
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313 | 'Gnomovision' (which makes passes at compilers) written by James Hacker. |
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314 | |||
315 | signature of Ty Coon, 1 April 1989 |
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316 | |||
317 | Ty Coon, President of Vice |
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318 | |||
319 | This General Public License does not permit incorporating your program into |
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320 | proprietary programs. If your program is a subroutine library, you may |
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321 | consider it more useful to permit linking proprietary applications with the |
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322 | library. If this is what you want to do, use the GNU Library General Public |
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323 | License instead of this License. |
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324 | |||
325 | |||
326 | "CLASSPATH" EXCEPTION TO THE GPL |
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327 | |||
328 | Certain source files distributed by Sun Microsystems, Inc. are subject to |
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329 | the following clarification and special exception to the GPL, but only where |
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330 | Sun has expressly included in the particular source file's header the words |
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331 | "Sun designates this particular file as subject to the "Classpath" exception |
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332 | as provided by Sun in the LICENSE file that accompanied this code." |
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333 | |||
334 | Linking this library statically or dynamically with other modules is making |
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335 | a combined work based on this library. Thus, the terms and conditions of |
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336 | the GNU General Public License cover the whole combination. |
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337 | |||
338 | As a special exception, the copyright holders of this library give you |
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339 | permission to link this library with independent modules to produce an |
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340 | executable, regardless of the license terms of these independent modules, |
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341 | and to copy and distribute the resulting executable under terms of your |
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342 | choice, provided that you also meet, for each linked independent module, |
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343 | the terms and conditions of the license of that module. An independent |
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344 | module is a module which is not derived from or based on this library. If |
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345 | you modify this library, you may extend this exception to your version of |
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346 | the library, but you are not obligated to do so. If you do not wish to do |
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347 | so, delete this exception statement from your version. |