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GNU GENERAL PUBLIC LICENSE
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Version 3 , 29 June 2007
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Copyright ( C ) 2007 Free Software Foundation , Inc . < http :// fsf . org />
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Everyone is permitted to copy and distribute verbatim copies
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of this license document , but changing it is not allowed .
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Preamble
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The GNU General Public License is a free , copyleft license for
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software and other kinds of works .
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The licenses for most software and other practical works are designed
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to take away your freedom to share and change the works . By contrast ,
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the GNU General Public License is intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains free
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software for all its users . We , the Free Software Foundation , use the
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GNU General Public License for most of our software ; it applies also to
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any other work released this way by its authors . You can apply it to
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your programs , too .
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When we speak of free software , we are referring to freedom , not
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price . Our General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software ( and charge for
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them if you wish ), that you receive source code or can get it if you
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want it , that you can change the software or use pieces of it in new
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free programs , and that you know you can do these things .
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To protect your rights , we need to prevent others from denying you
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these rights or asking you to surrender the rights . Therefore , you have
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certain responsibilities if you distribute copies of the software , or if
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you modify it : responsibilities to respect the freedom of others .
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For example , if you distribute copies of such a program , whether
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gratis or for a fee , you must pass on to the recipients the same
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freedoms that you received . You must make sure that they , too , receive
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or can get the source code . And you must show them these terms so they
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know their rights .
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Developers that use the GNU GPL protect your rights with two steps :
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( 1 ) assert copyright on the software , and ( 2 ) offer you this License
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giving you legal permission to copy , distribute and / or modify it .
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For the developers ' and authors' protection , the GPL clearly explains
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that there is no warranty for this free software . For both users ' and
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authors' sake , the GPL requires that modified versions be marked as
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changed , so that their problems will not be attributed erroneously to
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authors of previous versions .
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Some devices are designed to deny users access to install or run
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pattern of such abuse occurs in the area of products for individuals to
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use, which is precisely where it is most unacceptable. Therefore, we
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have designed this version of the GPL to prohibit the practice for those
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products. If such problems arise substantially in other domains, we
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stand ready to extend this provision to those domains in future versions
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of the GPL, as needed to protect the freedom of users.
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Finally, every program is threatened constantly by software patents.
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States should not allow patents to restrict development and use of
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avoid the special danger that patents applied to a free program could
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The precise terms and conditions for copying, distribution and
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modification follow.
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TERMS AND CONDITIONS
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0. Definitions.
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"This License" refers to version 3 of the GNU General Public License.
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"Copyright" also means copyright-like laws that apply to other kinds of
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works, such as semiconductor masks.
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"The Program" refers to any copyrightable work licensed under this
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"recipients" may be individuals or organizations.
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To "modify" a work means to copy from or adapt all or part of the work
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A "covered work" means either the unmodified Program or a work based
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To "propagate" a work means to do anything with it that, without
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infringement under applicable copyright law, except executing it on a
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distribution (with or without modification), making available to the
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To "convey" a work means any kind of propagation that enables other
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An interactive user interface displays "Appropriate Legal Notices"
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1. Source Code.
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The "source code" for a work means the preferred form of the work
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A "Standard Interface" means an interface that either is an official
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The "System Libraries" of an executable work include anything, other
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The "Corresponding Source" for a work in object code form means all
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System Libraries , or general-purpose tools or generally available free
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The Corresponding Source need not include anything that users
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can regenerate automatically from other parts of the Corresponding
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Source .
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The Corresponding Source for a work in source code form is that
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same work .
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2 . Basic Permissions .
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All rights granted under this License are granted for the term of
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copyright on the Program , and are irrevocable provided the stated
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conditions are met . This License explicitly affirms your unlimited
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permission to run the unmodified Program . The output from running a
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covered work is covered by this License only if the output , given its
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content , constitutes a covered work . This License acknowledges your
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rights of fair use or other equivalent , as provided by copyright law .
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You may make , run and propagate covered works that you do not
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convey , without conditions so long as your license otherwise remains
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in force . You may convey covered works to others for the sole purpose
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of having them make modifications exclusively for you , or provide you
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with facilities for running those works , provided that you comply with
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the terms of this License in conveying all material for which you do
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not control copyright . Those thus making or running the covered works
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for you must do so exclusively on your behalf , under your direction
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and control , on terms that prohibit them from making any copies of
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your copyrighted material outside their relationship with you .
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Conveying under any other circumstances is permitted solely under
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the conditions stated below . Sublicensing is not allowed ; section 10
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makes it unnecessary .
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3 . Protecting Users ' Legal Rights From Anti-Circumvention Law.
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No covered work shall be deemed part of an effective technological
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measure under any applicable law fulfilling obligations under article
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11 of the WIPO copyright treaty adopted on 20 December 1996, or
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similar laws prohibiting or restricting circumvention of such
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measures.
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When you convey a covered work, you waive any legal power to forbid
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modification of the work as a means of enforcing, against the work' s
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users , your or third parties ' legal rights to forbid circumvention of
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technological measures.
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4. Conveying Verbatim Copies.
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You may convey verbatim copies of the Program' s source code as you
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receive it , in any medium , provided that you conspicuously and
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appropriately publish on each copy an appropriate copyright notice ;
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non-permissive terms added in accord with section 7 apply to the code ;
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keep intact all notices of the absence of any warranty ; and give all
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recipients a copy of this License along with the Program .
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You may charge any price or no price for each copy that you convey ,
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You may convey a work based on the Program , or the modifications to
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produce it from the Program , in the form of source code under the
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terms of section 4 , provided that you also meet all of these conditions :
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a ) The work must carry prominent notices stating that you modified
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it , and giving a relevant date .
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b ) The work must carry prominent notices stating that it is
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released under this License and any conditions added under section
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7 . This requirement modifies the requirement in section 4 to
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"keep intact all notices" .
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c ) You must license the entire work , as a whole , under this
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License to anyone who comes into possession of a copy . This
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License will therefore apply , along with any applicable section 7
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additional terms , to the whole of the work , and all its parts ,
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regardless of how they are packaged . This License gives no
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permission to license the work in any other way , but it does not
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invalidate such permission if you have separately received it .
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d ) If the work has interactive user interfaces , each must display
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Appropriate Legal Notices ; however , if the Program has interactive
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interfaces that do not display Appropriate Legal Notices , your
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work need not make them do so .
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A compilation of a covered work with other separate and independent
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works , which are not by their nature extensions of the covered work ,
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and which are not combined with it such as to form a larger program ,
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in or on a volume of a storage or distribution medium , is called an
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"aggregate" if the compilation and its resulting copyright are not
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used to limit the access or legal rights of the compilation 's users
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beyond what the individual works permit. Inclusion of a covered work
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in an aggregate does not cause this License to apply to the other
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parts of the aggregate.
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6. Conveying Non-Source Forms.
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You may convey a covered work in object code form under the terms
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of sections 4 and 5, provided that you also convey the
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machine-readable Corresponding Source under the terms of this License,
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in one of these ways:
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a) Convey the object code in, or embodied in, a physical product
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(including a physical distribution medium), accompanied by the
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customarily used for software interchange.
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b) Convey the object code in, or embodied in, a physical product
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(including a physical distribution medium), accompanied by a
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written offer, valid for at least three years and valid for as
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long as you offer spare parts or customer support for that product
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model, to give anyone who possesses the object code either (1) a
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copy of the Corresponding Source for all the software in the
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product that is covered by this License, on a durable physical
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medium customarily used for software interchange, for a price no
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more than your reasonable cost of physically performing this
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conveying of source, or (2) access to copy the
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Corresponding Source from a network server at no charge.
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c) Convey individual copies of the object code with a copy of the
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written offer to provide the Corresponding Source. This
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alternative is allowed only occasionally and noncommercially, and
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only if you received the object code with such an offer, in accord
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with subsection 6b.
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d) Convey the object code by offering access from a designated
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Corresponding Source in the same way through the same place at no
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may be on a different server (operated by you or a third party)
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that supports equivalent copying facilities, provided you maintain
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clear directions next to the object code saying where to find the
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available for as long as needed to satisfy these requirements.
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e) Convey the object code using peer-to-peer transmission, provided
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you inform other peers where the object code and Corresponding
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Source of the work are being offered to the general public at no
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charge under subsection 6d.
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A separable portion of the object code, whose source code is excluded
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from the Corresponding Source as a System Library, need not be
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included in conveying the object code work.
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A "User Product" is either (1) a "consumer product", which means any
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tangible personal property which is normally used for personal, family,
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doubtful cases shall be resolved in favor of coverage. For a particular
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typical or common use of that class of product, regardless of the status
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actually uses, or expects or is expected to use, the product. A product
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is a consumer product regardless of whether the product has substantial
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commercial, industrial or non-consumer uses, unless such uses represent
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the only significant mode of use of the product.
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"Installation Information" for a User Product means any methods,
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procedures, authorization keys, or other information required to install
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and execute modified versions of a covered work in that User Product from
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a modified version of its Corresponding Source. The information must
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suffice to ensure that the continued functioning of the modified object
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code is in no case prevented or interfered with solely because
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modification has been made.
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If you convey an object code work under this section in, or with, or
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specifically for use in, a User Product, and the conveying occurs as
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part of a transaction in which the right of possession and use of the
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User Product is transferred to the recipient in perpetuity or for a
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fixed term (regardless of how the transaction is characterized), the
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Corresponding Source conveyed under this section must be accompanied
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by the Installation Information. But this requirement does not apply
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if neither you nor any third party retains the ability to install
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modified object code on the User Product (for example, the work has
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been installed in ROM).
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The requirement to provide Installation Information does not include a
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requirement to continue to provide support service, warranty, or updates
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for a work that has been modified or installed by the recipient, or for
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the User Product in which it has been modified or installed. Access to a
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network may be denied when the modification itself materially and
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protocols for communication across the network.
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Corresponding Source conveyed, and Installation Information provided,
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in accord with this section must be in a format that is publicly
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documented (and with an implementation available to the public in
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source code form), and must require no special password or key for
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unpacking, reading or copying.
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7. Additional Terms.
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"Additional permissions" are terms that supplement the terms of this
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License by making exceptions from one or more of its conditions.
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Additional permissions that are applicable to the entire Program shall
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be treated as though they were included in this License, to the extent
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that they are valid under applicable law. If additional permissions
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apply only to part of the Program, that part may be used separately
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under those permissions, but the entire Program remains governed by
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this License without regard to the additional permissions.
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When you convey a copy of a covered work, you may at your option
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remove any additional permissions from that copy, or from any part of
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it. (Additional permissions may be written to require their own
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removal in certain cases when you modify the work.) You may place
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additional permissions on material, added by you to a covered work,
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for which you have or can give appropriate copyright permission.
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Notwithstanding any other provision of this License, for material you
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add to a covered work, you may (if authorized by the copyright holders of
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that material) supplement the terms of this License with terms:
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a) Disclaiming warranty or limiting liability differently from the
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terms of sections 15 and 16 of this License; or
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b) Requiring preservation of specified reasonable legal notices or
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author attributions in that material or in the Appropriate Legal
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Notices displayed by works containing it; or
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c) Prohibiting misrepresentation of the origin of that material, or
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requiring that modified versions of such material be marked in
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reasonable ways as different from the original version; or
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d) Limiting the use for publicity purposes of names of licensors or
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authors of the material; or
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e) Declining to grant rights under trademark law for use of some
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those licensors and authors.
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All other non-permissive additional terms are considered "further
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restrictions" within the meaning of section 10. If the Program as you
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received it, or any part of it, contains a notice stating that it is
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governed by this License along with a term that is a further
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restriction, you may remove that term. If a license document contains
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a further restriction but permits relicensing or conveying under this
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License, you may add to a covered work material governed by the terms
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not survive such relicensing or conveying.
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If you add terms to a covered work in accord with this section, you
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must place, in the relevant source files, a statement of the
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additional terms that apply to those files, or a notice indicating
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where to find the applicable terms.
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Additional terms, permissive or non-permissive, may be stated in the
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form of a separately written license, or stated as exceptions;
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the above requirements apply either way.
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8. Termination.
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You may not propagate or modify a covered work except as expressly
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provided under this License. Any attempt otherwise to propagate or
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modify it is void, and will automatically terminate your rights under
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this License (including any patent licenses granted under the third
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paragraph of section 11).
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However, if you cease all violation of this License, then your
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license from a particular copyright holder is reinstated (a)
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provisionally, unless and until the copyright holder explicitly and
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finally terminates your license, and (b) permanently, if the copyright
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holder fails to notify you of the violation by some reasonable means
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prior to 60 days after the cessation.
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Moreover, your license from a particular copyright holder is
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reinstated permanently if the copyright holder notifies you of the
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violation by some reasonable means, this is the first time you have
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received notice of violation of this License (for any work) from that
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copyright holder, and you cure the violation prior to 30 days after
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your receipt of the notice.
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Termination of your rights under this section does not terminate the
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licenses of parties who have received copies or rights from you under
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this License. If your rights have been terminated and not permanently
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reinstated, you do not qualify to receive new licenses for the same
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material under section 10.
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9. Acceptance Not Required for Having Copies.
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You are not required to accept this License in order to receive or
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run a copy of the Program. Ancillary propagation of a covered work
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occurring solely as a consequence of using peer-to-peer transmission
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to receive a copy likewise does not require acceptance. However,
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nothing other than this License grants you permission to propagate or
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modify any covered work. These actions infringe copyright if you do
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not accept this License. Therefore, by modifying or propagating a
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covered work, you indicate your acceptance of this License to do so.
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10. Automatic Licensing of Downstream Recipients.
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Each time you convey a covered work, the recipient automatically
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receives a license from the original licensors, to run, modify and
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propagate that work, subject to this License. You are not responsible
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An "entity transaction" is a transaction transferring control of an
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organization, or substantially all assets of one, or subdividing an
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organization, or merging organizations. If propagation of a covered
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licenses to the work the party' s predecessor in interest had or could
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give under the previous paragraph , plus a right to possession of the
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Corresponding Source of the work from the predecessor in interest , if
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the predecessor has it or can get it with reasonable efforts .
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You may not impose any further restrictions on the exercise of the
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rights granted or affirmed under this License . For example , you may
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not impose a license fee , royalty , or other charge for exercise of
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rights granted under this License , and you may not initiate litigation
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( including a cross-claim or counterclaim in a lawsuit ) alleging that
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any patent claim is infringed by making , using , selling , offering for
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sale , or importing the Program or any portion of it .
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11 . Patents .
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A "contributor" is a copyright holder who authorizes use under this
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License of the Program or a work on which the Program is based . The
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work thus licensed is called the contributor 's "contributor version".
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A contributor' s "essential patent claims" are all patent claims
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owned or controlled by the contributor , whether already acquired or
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hereafter acquired , that would be infringed by some manner , permitted
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by this License , of making , using , or selling its contributor version ,
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but do not include claims that would be infringed only as a
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consequence of further modification of the contributor version . For
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purposes of this definition , "control" includes the right to grant
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patent sublicenses in a manner consistent with the requirements of
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this License .
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Each contributor grants you a non-exclusive , worldwide , royalty-free
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patent license under the contributor 's essential patent claims, to
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make, use, sell, offer for sale, import and otherwise run, modify and
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propagate the contents of its contributor version.
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In the following three paragraphs, a "patent license" is any express
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If you convey a covered work, knowingly relying on a patent license,
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license to downstream recipients. "Knowingly relying" means you have
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actual knowledge that, but for the patent license, your conveying the
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covered work in a country, or your recipient' s use of the covered work
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If , pursuant to or in connection with a single transaction or
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or convey a specific copy of the covered work , then the patent license
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work and works based on it .
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A patent license is "discriminatory" if it does not include within
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specifically granted under this License . You may not convey a covered
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patent license ( a ) in connection with copies of the covered work
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conveyed by you ( or copies made from those copies ), or ( b ) primarily
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for and in connection with specific products or compilations that
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contain the covered work , unless you entered into that arrangement ,
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or that patent license was granted , prior to 28 March 2007 .
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Nothing in this License shall be construed as excluding or limiting
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any implied license or other defenses to infringement that may
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12 . No Surrender of Others ' Freedom.
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If conditions are imposed on you (whether by court order, agreement or
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otherwise) that contradict the conditions of this License, they do not
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excuse you from the conditions of this License. If you cannot convey a
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not convey it at all. For example, if you agree to terms that obligate you
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the Program, the only way you could satisfy both those terms and this
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License would be to refrain entirely from conveying the Program.
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13. Use with the GNU Affero General Public License.
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Notwithstanding any other provision of this License, you have
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permission to link or combine any covered work with a work licensed
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under version 3 of the GNU Affero General Public License into a single
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License will continue to apply to the part which is the covered work,
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but the special requirements of the GNU Affero General Public License,
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section 13, concerning interaction through a network will apply to the
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combination as such.
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14. Revised Versions of this License.
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The Free Software Foundation may publish revised and/or new versions of
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be similar in spirit to the present version, but may differ in detail to
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address new problems or concerns.
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Each version is given a distinguishing version number. If the
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option of following the terms and conditions either of that numbered
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version or of any later version published by the Free Software
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Foundation. If the Program does not specify a version number of the
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GNU General Public License, you may choose any version ever published
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If the Program specifies that a proxy can decide which future
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Later license versions may give you additional or different
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later version .
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15 . Disclaimer of Warranty .
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THERE IS NO WARRANTY FOR THE PROGRAM , TO THE EXTENT PERMITTED BY
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APPLICABLE LAW . EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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HOLDERS AND / OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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OF ANY KIND , EITHER EXPRESSED OR IMPLIED , INCLUDING , BUT NOT LIMITED TO ,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE . THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
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IS WITH YOU . SHOULD THE PROGRAM PROVE DEFECTIVE , YOU ASSUME THE COST OF
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ALL NECESSARY SERVICING , REPAIR OR CORRECTION .
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16 . Limitation of Liability .
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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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WILL ANY COPYRIGHT HOLDER , OR ANY OTHER PARTY WHO MODIFIES AND / OR CONVEYS
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THE PROGRAM AS PERMITTED ABOVE , BE LIABLE TO YOU FOR DAMAGES , INCLUDING ANY
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GENERAL , SPECIAL , INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
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USE OR INABILITY TO USE THE PROGRAM ( INCLUDING BUT NOT LIMITED TO LOSS OF
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DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS ),
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EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGES .
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17 . Interpretation of Sections 15 and 16 .
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If the disclaimer of warranty and limitation of liability provided
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above cannot be given local legal effect according to their terms ,
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reviewing courts shall apply local law that most closely approximates
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an absolute waiver of all civil liability in connection with the
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Program , unless a warranty or assumption of liability accompanies a
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copy of the Program in return for a fee .
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+ − 621
END OF TERMS AND CONDITIONS
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