annotate COPYING @ 189:e10f5951b905

fix null pointer dereference from missing HELO command
author carl
date Sat, 10 Nov 2007 10:41:04 -0800
parents c7fc218686f5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 GNU GENERAL PUBLIC LICENSE
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3 Version 3, 29 June 2007
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4
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5 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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6 Everyone is permitted to copy and distribute verbatim copies
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7 of this license document, but changing it is not allowed.
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8
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9 Preamble
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10
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11 The GNU General Public License is a free, copyleft license for
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12 software and other kinds of works.
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13
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14 The licenses for most software and other practical works are designed
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15 to take away your freedom to share and change the works. By contrast,
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16 the GNU General Public License is intended to guarantee your freedom to
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17 share and change all versions of a program--to make sure it remains free
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18 software for all its users. We, the Free Software Foundation, use the
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19 GNU General Public License for most of our software; it applies also to
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20 any other work released this way by its authors. You can apply it to
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21 your programs, too.
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22
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23 When we speak of free software, we are referring to freedom, not
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24 price. Our General Public Licenses are designed to make sure that you
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25 have the freedom to distribute copies of free software (and charge for
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26 them if you wish), that you receive source code or can get it if you
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27 want it, that you can change the software or use pieces of it in new
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28 free programs, and that you know you can do these things.
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29
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30 To protect your rights, we need to prevent others from denying you
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31 these rights or asking you to surrender the rights. Therefore, you have
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32 certain responsibilities if you distribute copies of the software, or if
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33 you modify it: responsibilities to respect the freedom of others.
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34
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35 For example, if you distribute copies of such a program, whether
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36 gratis or for a fee, you must pass on to the recipients the same
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37 freedoms that you received. You must make sure that they, too, receive
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38 or can get the source code. And you must show them these terms so they
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39 know their rights.
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41 Developers that use the GNU GPL protect your rights with two steps:
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42 (1) assert copyright on the software, and (2) offer you this License
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43 giving you legal permission to copy, distribute and/or modify it.
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44
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45 For the developers' and authors' protection, the GPL clearly explains
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46 that there is no warranty for this free software. For both users' and
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47 authors' sake, the GPL requires that modified versions be marked as
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48 changed, so that their problems will not be attributed erroneously to
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49 authors of previous versions.
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51 Some devices are designed to deny users access to install or run
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52 modified versions of the software inside them, although the manufacturer
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53 can do so. This is fundamentally incompatible with the aim of
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54 protecting users' freedom to change the software. The systematic
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55 pattern of such abuse occurs in the area of products for individuals to
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56 use, which is precisely where it is most unacceptable. Therefore, we
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57 have designed this version of the GPL to prohibit the practice for those
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58 products. If such problems arise substantially in other domains, we
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59 stand ready to extend this provision to those domains in future versions
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60 of the GPL, as needed to protect the freedom of users.
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61
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62 Finally, every program is threatened constantly by software patents.
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63 States should not allow patents to restrict development and use of
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64 software on general-purpose computers, but in those that do, we wish to
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65 avoid the special danger that patents applied to a free program could
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66 make it effectively proprietary. To prevent this, the GPL assures that
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67 patents cannot be used to render the program non-free.
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68
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69 The precise terms and conditions for copying, distribution and
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70 modification follow.
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71
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72 TERMS AND CONDITIONS
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73
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74 0. Definitions.
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75
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76 "This License" refers to version 3 of the GNU General Public License.
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77
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78 "Copyright" also means copyright-like laws that apply to other kinds of
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79 works, such as semiconductor masks.
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80
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81 "The Program" refers to any copyrightable work licensed under this
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82 License. Each licensee is addressed as "you". "Licensees" and
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83 "recipients" may be individuals or organizations.
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84
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85 To "modify" a work means to copy from or adapt all or part of the work
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86 in a fashion requiring copyright permission, other than the making of an
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87 exact copy. The resulting work is called a "modified version" of the
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88 earlier work or a work "based on" the earlier work.
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89
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90 A "covered work" means either the unmodified Program or a work based
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91 on the Program.
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93 To "propagate" a work means to do anything with it that, without
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94 permission, would make you directly or secondarily liable for
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95 infringement under applicable copyright law, except executing it on a
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96 computer or modifying a private copy. Propagation includes copying,
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97 distribution (with or without modification), making available to the
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98 public, and in some countries other activities as well.
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99
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100 To "convey" a work means any kind of propagation that enables other
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101 parties to make or receive copies. Mere interaction with a user through
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102 a computer network, with no transfer of a copy, is not conveying.
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103
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104 An interactive user interface displays "Appropriate Legal Notices"
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105 to the extent that it includes a convenient and prominently visible
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106 feature that (1) displays an appropriate copyright notice, and (2)
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107 tells the user that there is no warranty for the work (except to the
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108 extent that warranties are provided), that licensees may convey the
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109 work under this License, and how to view a copy of this License. If
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110 the interface presents a list of user commands or options, such as a
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111 menu, a prominent item in the list meets this criterion.
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112
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113 1. Source Code.
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114
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115 The "source code" for a work means the preferred form of the work
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116 for making modifications to it. "Object code" means any non-source
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117 form of a work.
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118
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119 A "Standard Interface" means an interface that either is an official
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120 standard defined by a recognized standards body, or, in the case of
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121 interfaces specified for a particular programming language, one that
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122 is widely used among developers working in that language.
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123
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124 The "System Libraries" of an executable work include anything, other
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125 than the work as a whole, that (a) is included in the normal form of
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126 packaging a Major Component, but which is not part of that Major
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127 Component, and (b) serves only to enable use of the work with that
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128 Major Component, or to implement a Standard Interface for which an
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129 implementation is available to the public in source code form. A
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130 "Major Component", in this context, means a major essential component
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131 (kernel, window system, and so on) of the specific operating system
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132 (if any) on which the executable work runs, or a compiler used to
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133 produce the work, or an object code interpreter used to run it.
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134
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135 The "Corresponding Source" for a work in object code form means all
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136 the source code needed to generate, install, and (for an executable
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137 work) run the object code and to modify the work, including scripts to
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138 control those activities. However, it does not include the work's
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139 System Libraries, or general-purpose tools or generally available free
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140 programs which are used unmodified in performing those activities but
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141 which are not part of the work. For example, Corresponding Source
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142 includes interface definition files associated with source files for
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143 the work, and the source code for shared libraries and dynamically
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144 linked subprograms that the work is specifically designed to require,
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145 such as by intimate data communication or control flow between those
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146 subprograms and other parts of the work.
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148 The Corresponding Source need not include anything that users
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149 can regenerate automatically from other parts of the Corresponding
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150 Source.
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151
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152 The Corresponding Source for a work in source code form is that
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153 same work.
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154
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155 2. Basic Permissions.
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156
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157 All rights granted under this License are granted for the term of
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158 copyright on the Program, and are irrevocable provided the stated
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159 conditions are met. This License explicitly affirms your unlimited
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160 permission to run the unmodified Program. The output from running a
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161 covered work is covered by this License only if the output, given its
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162 content, constitutes a covered work. This License acknowledges your
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163 rights of fair use or other equivalent, as provided by copyright law.
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164
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165 You may make, run and propagate covered works that you do not
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166 convey, without conditions so long as your license otherwise remains
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167 in force. You may convey covered works to others for the sole purpose
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168 of having them make modifications exclusively for you, or provide you
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169 with facilities for running those works, provided that you comply with
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170 the terms of this License in conveying all material for which you do
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171 not control copyright. Those thus making or running the covered works
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172 for you must do so exclusively on your behalf, under your direction
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173 and control, on terms that prohibit them from making any copies of
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174 your copyrighted material outside their relationship with you.
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175
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176 Conveying under any other circumstances is permitted solely under
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177 the conditions stated below. Sublicensing is not allowed; section 10
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178 makes it unnecessary.
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179
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180 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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181
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182 No covered work shall be deemed part of an effective technological
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183 measure under any applicable law fulfilling obligations under article
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184 11 of the WIPO copyright treaty adopted on 20 December 1996, or
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185 similar laws prohibiting or restricting circumvention of such
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186 measures.
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187
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188 When you convey a covered work, you waive any legal power to forbid
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189 circumvention of technological measures to the extent such circumvention
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190 is effected by exercising rights under this License with respect to
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191 the covered work, and you disclaim any intention to limit operation or
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192 modification of the work as a means of enforcing, against the work's
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193 users, your or third parties' legal rights to forbid circumvention of
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194 technological measures.
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195
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196 4. Conveying Verbatim Copies.
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197
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198 You may convey verbatim copies of the Program's source code as you
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199 receive it, in any medium, provided that you conspicuously and
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200 appropriately publish on each copy an appropriate copyright notice;
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201 keep intact all notices stating that this License and any
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202 non-permissive terms added in accord with section 7 apply to the code;
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203 keep intact all notices of the absence of any warranty; and give all
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204 recipients a copy of this License along with the Program.
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205
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206 You may charge any price or no price for each copy that you convey,
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207 and you may offer support or warranty protection for a fee.
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208
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209 5. Conveying Modified Source Versions.
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210
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211 You may convey a work based on the Program, or the modifications to
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212 produce it from the Program, in the form of source code under the
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213 terms of section 4, provided that you also meet all of these conditions:
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214
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215 a) The work must carry prominent notices stating that you modified
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216 it, and giving a relevant date.
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217
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218 b) The work must carry prominent notices stating that it is
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219 released under this License and any conditions added under section
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220 7. This requirement modifies the requirement in section 4 to
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221 "keep intact all notices".
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222
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223 c) You must license the entire work, as a whole, under this
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224 License to anyone who comes into possession of a copy. This
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225 License will therefore apply, along with any applicable section 7
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226 additional terms, to the whole of the work, and all its parts,
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227 regardless of how they are packaged. This License gives no
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228 permission to license the work in any other way, but it does not
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229 invalidate such permission if you have separately received it.
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230
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231 d) If the work has interactive user interfaces, each must display
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232 Appropriate Legal Notices; however, if the Program has interactive
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233 interfaces that do not display Appropriate Legal Notices, your
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234 work need not make them do so.
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235
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236 A compilation of a covered work with other separate and independent
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237 works, which are not by their nature extensions of the covered work,
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238 and which are not combined with it such as to form a larger program,
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239 in or on a volume of a storage or distribution medium, is called an
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240 "aggregate" if the compilation and its resulting copyright are not
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241 used to limit the access or legal rights of the compilation's users
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242 beyond what the individual works permit. Inclusion of a covered work
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243 in an aggregate does not cause this License to apply to the other
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244 parts of the aggregate.
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245
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246 6. Conveying Non-Source Forms.
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247
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248 You may convey a covered work in object code form under the terms
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249 of sections 4 and 5, provided that you also convey the
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250 machine-readable Corresponding Source under the terms of this License,
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251 in one of these ways:
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252
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253 a) Convey the object code in, or embodied in, a physical product
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254 (including a physical distribution medium), accompanied by the
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255 Corresponding Source fixed on a durable physical medium
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256 customarily used for software interchange.
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257
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258 b) Convey the object code in, or embodied in, a physical product
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259 (including a physical distribution medium), accompanied by a
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carl
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260 written offer, valid for at least three years and valid for as
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261 long as you offer spare parts or customer support for that product
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262 model, to give anyone who possesses the object code either (1) a
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263 copy of the Corresponding Source for all the software in the
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264 product that is covered by this License, on a durable physical
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265 medium customarily used for software interchange, for a price no
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266 more than your reasonable cost of physically performing this
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267 conveying of source, or (2) access to copy the
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268 Corresponding Source from a network server at no charge.
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269
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270 c) Convey individual copies of the object code with a copy of the
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271 written offer to provide the Corresponding Source. This
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272 alternative is allowed only occasionally and noncommercially, and
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273 only if you received the object code with such an offer, in accord
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274 with subsection 6b.
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275
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276 d) Convey the object code by offering access from a designated
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277 place (gratis or for a charge), and offer equivalent access to the
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278 Corresponding Source in the same way through the same place at no
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279 further charge. You need not require recipients to copy the
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280 Corresponding Source along with the object code. If the place to
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281 copy the object code is a network server, the Corresponding Source
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282 may be on a different server (operated by you or a third party)
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283 that supports equivalent copying facilities, provided you maintain
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284 clear directions next to the object code saying where to find the
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285 Corresponding Source. Regardless of what server hosts the
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286 Corresponding Source, you remain obligated to ensure that it is
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287 available for as long as needed to satisfy these requirements.
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288
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289 e) Convey the object code using peer-to-peer transmission, provided
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290 you inform other peers where the object code and Corresponding
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291 Source of the work are being offered to the general public at no
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292 charge under subsection 6d.
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293
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294 A separable portion of the object code, whose source code is excluded
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295 from the Corresponding Source as a System Library, need not be
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296 included in conveying the object code work.
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297
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298 A "User Product" is either (1) a "consumer product", which means any
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299 tangible personal property which is normally used for personal, family,
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300 or household purposes, or (2) anything designed or sold for incorporation
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301 into a dwelling. In determining whether a product is a consumer product,
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302 doubtful cases shall be resolved in favor of coverage. For a particular
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303 product received by a particular user, "normally used" refers to a
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304 typical or common use of that class of product, regardless of the status
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305 of the particular user or of the way in which the particular user
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306 actually uses, or expects or is expected to use, the product. A product
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307 is a consumer product regardless of whether the product has substantial
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308 commercial, industrial or non-consumer uses, unless such uses represent
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309 the only significant mode of use of the product.
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310
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311 "Installation Information" for a User Product means any methods,
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312 procedures, authorization keys, or other information required to install
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313 and execute modified versions of a covered work in that User Product from
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314 a modified version of its Corresponding Source. The information must
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315 suffice to ensure that the continued functioning of the modified object
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316 code is in no case prevented or interfered with solely because
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317 modification has been made.
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318
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319 If you convey an object code work under this section in, or with, or
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320 specifically for use in, a User Product, and the conveying occurs as
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321 part of a transaction in which the right of possession and use of the
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322 User Product is transferred to the recipient in perpetuity or for a
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323 fixed term (regardless of how the transaction is characterized), the
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324 Corresponding Source conveyed under this section must be accompanied
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325 by the Installation Information. But this requirement does not apply
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326 if neither you nor any third party retains the ability to install
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327 modified object code on the User Product (for example, the work has
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328 been installed in ROM).
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329
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330 The requirement to provide Installation Information does not include a
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331 requirement to continue to provide support service, warranty, or updates
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332 for a work that has been modified or installed by the recipient, or for
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333 the User Product in which it has been modified or installed. Access to a
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334 network may be denied when the modification itself materially and
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335 adversely affects the operation of the network or violates the rules and
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336 protocols for communication across the network.
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337
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338 Corresponding Source conveyed, and Installation Information provided,
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339 in accord with this section must be in a format that is publicly
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340 documented (and with an implementation available to the public in
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341 source code form), and must require no special password or key for
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342 unpacking, reading or copying.
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343
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344 7. Additional Terms.
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345
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346 "Additional permissions" are terms that supplement the terms of this
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347 License by making exceptions from one or more of its conditions.
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348 Additional permissions that are applicable to the entire Program shall
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349 be treated as though they were included in this License, to the extent
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350 that they are valid under applicable law. If additional permissions
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351 apply only to part of the Program, that part may be used separately
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352 under those permissions, but the entire Program remains governed by
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353 this License without regard to the additional permissions.
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355 When you convey a copy of a covered work, you may at your option
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356 remove any additional permissions from that copy, or from any part of
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362 Notwithstanding any other provision of this License, for material you
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366 a) Disclaiming warranty or limiting liability differently from the
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391 received it, or any part of it, contains a notice stating that it is
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430 Termination of your rights under this section does not terminate the
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438 You are not required to accept this License in order to receive or
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447 10. Automatic Licensing of Downstream Recipients.
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474 A "contributor" is a copyright holder who authorizes use under this
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527 in the business of distributing software, under which you make payment
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528 to the third party based on the extent of your activity of conveying
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529 the work, and under which the third party grants, to any of the
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530 parties who would receive the covered work from you, a discriminatory
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531 patent license (a) in connection with copies of the covered work
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532 conveyed by you (or copies made from those copies), or (b) primarily
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533 for and in connection with specific products or compilations that
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534 contain the covered work, unless you entered into that arrangement,
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535 or that patent license was granted, prior to 28 March 2007.
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536
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537 Nothing in this License shall be construed as excluding or limiting
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538 any implied license or other defenses to infringement that may
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539 otherwise be available to you under applicable patent law.
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540
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541 12. No Surrender of Others' Freedom.
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542
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543 If conditions are imposed on you (whether by court order, agreement or
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544 otherwise) that contradict the conditions of this License, they do not
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545 excuse you from the conditions of this License. If you cannot convey a
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546 covered work so as to satisfy simultaneously your obligations under this
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547 License and any other pertinent obligations, then as a consequence you may
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548 not convey it at all. For example, if you agree to terms that obligate you
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549 to collect a royalty for further conveying from those to whom you convey
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550 the Program, the only way you could satisfy both those terms and this
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551 License would be to refrain entirely from conveying the Program.
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552
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553 13. Use with the GNU Affero General Public License.
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554
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555 Notwithstanding any other provision of this License, you have
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556 permission to link or combine any covered work with a work licensed
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557 under version 3 of the GNU Affero General Public License into a single
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558 combined work, and to convey the resulting work. The terms of this
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559 License will continue to apply to the part which is the covered work,
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560 but the special requirements of the GNU Affero General Public License,
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561 section 13, concerning interaction through a network will apply to the
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562 combination as such.
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563
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564 14. Revised Versions of this License.
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565
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566 The Free Software Foundation may publish revised and/or new versions of
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567 the GNU General Public License from time to time. Such new versions will
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568 be similar in spirit to the present version, but may differ in detail to
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569 address new problems or concerns.
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570
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571 Each version is given a distinguishing version number. If the
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572 Program specifies that a certain numbered version of the GNU General
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573 Public License "or any later version" applies to it, you have the
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574 option of following the terms and conditions either of that numbered
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575 version or of any later version published by the Free Software
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576 Foundation. If the Program does not specify a version number of the
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577 GNU General Public License, you may choose any version ever published
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578 by the Free Software Foundation.
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579
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580 If the Program specifies that a proxy can decide which future
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581 versions of the GNU General Public License can be used, that proxy's
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582 public statement of acceptance of a version permanently authorizes you
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583 to choose that version for the Program.
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584
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585 Later license versions may give you additional or different
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586 permissions. However, no additional obligations are imposed on any
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587 author or copyright holder as a result of your choosing to follow a
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588 later version.
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589
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590 15. Disclaimer of Warranty.
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591
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592 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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593 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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594 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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595 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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596 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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597 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
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598 IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
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599 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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600
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601 16. Limitation of Liability.
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602
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603 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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604 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
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605 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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606 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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carl
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607 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
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carl
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608 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
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609 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
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610 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
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611 SUCH DAMAGES.
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612
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613 17. Interpretation of Sections 15 and 16.
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614
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615 If the disclaimer of warranty and limitation of liability provided
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616 above cannot be given local legal effect according to their terms,
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617 reviewing courts shall apply local law that most closely approximates
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618 an absolute waiver of all civil liability in connection with the
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619 Program, unless a warranty or assumption of liability accompanies a
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620 copy of the Program in return for a fee.
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621
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622 END OF TERMS AND CONDITIONS
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623
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624 How to Apply These Terms to Your New Programs
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625
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626 If you develop a new program, and you want it to be of the greatest
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627 possible use to the public, the best way to achieve this is to make it
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628 free software which everyone can redistribute and change under these terms.
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629
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630 To do so, attach the following notices to the program. It is safest
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631 to attach them to the start of each source file to most effectively
152
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632 state the exclusion of warranty; and each file should have at least
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633 the "copyright" line and a pointer to where the full notice is found.
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634
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635 <one line to give the program's name and a brief idea of what it does.>
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636 Copyright (C) <year> <name of author>
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637
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638 This program is free software: you can redistribute it and/or modify
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639 it under the terms of the GNU General Public License as published by
152
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640 the Free Software Foundation, either version 3 of the License, or
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641 (at your option) any later version.
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642
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643 This program is distributed in the hope that it will be useful,
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644 but WITHOUT ANY WARRANTY; without even the implied warranty of
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645 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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646 GNU General Public License for more details.
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647
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648 You should have received a copy of the GNU General Public License
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649 along with this program. If not, see <http://www.gnu.org/licenses/>.
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650
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651 Also add information on how to contact you by electronic and paper mail.
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652
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653 If the program does terminal interaction, make it output a short
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654 notice like this when it starts in an interactive mode:
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655
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656 <program> Copyright (C) <year> <name of author>
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657 This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
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658 This is free software, and you are welcome to redistribute it
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659 under certain conditions; type `show c' for details.
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660
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661 The hypothetical commands `show w' and `show c' should show the appropriate
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662 parts of the General Public License. Of course, your program's commands
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663 might be different; for a GUI interface, you would use an "about box".
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664
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665 You should also get your employer (if you work as a programmer) or school,
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666 if any, to sign a "copyright disclaimer" for the program, if necessary.
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667 For more information on this, and how to apply and follow the GNU GPL, see
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668 <http://www.gnu.org/licenses/>.
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669
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670 The GNU General Public License does not permit incorporating your program
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671 into proprietary programs. If your program is a subroutine library, you
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672 may consider it more useful to permit linking proprietary applications with
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673 the library. If this is what you want to do, use the GNU Lesser General
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674 Public License instead of this License. But first, please read
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675 <http://www.gnu.org/philosophy/why-not-lgpl.html>.
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676