User guide

98
A “covered work” means either the unmodified Program or a work based on the Program.
To “propagate” a work means to do anything with it that, without permission, would make you directly or
secondarily liable for infringement under applicable copyright law, except executing it on a computer or
modifying a private copy. Propagation includes copying, distribution (with or without modification),
making available to the public, and in some countries other activities as well.
To “convey” a work means any kind of propagation that enables other parties to make or receive copies.
Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a
convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells
the user that there is no warranty for the work (except to the extent that warranties are provided), that
licensees may convey the work under this License, and how to view a copy of this License. If the interface
presents a list of user commands or options, such as a menu, a prominent item in the list meets this
criterion.
1. Source Code.
The “source code” for a work means the preferred form of the work for making modifications to it. “Object
code” means any non-source form of a work.
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included in the normal form of packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that Major Component, or to implement a
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The “Corresponding Source” for a work in object code form means all the source code needed to
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purpose tools or generally available free programs which are used unmodified in performing those
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definition files associated with source files for the work, and the source code for shared libraries and
dynamically linked subprograms that the work is specifically designed to require, such as by intimate data
communication or control flow between those subprograms and other parts of the work.
The Corresponding Source need not include anything that users can regenerate automatically from other
parts of the Corresponding Source.
The Corresponding Source for a work in source code form is that same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of copyright on the Program, and are
irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a covered work is covered by this
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rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not convey, without conditions so long as
your license otherwise remains in force. You may convey covered works to others for the sole purpose of
having them make modifications exclusively for you, or provide you with facilities for running those works,
provided that you comply with the terms of this License in conveying all material for which you do not
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Conveying under any other circumstances is permitted solely under the conditions stated below.
Sublicensing is not allowed; section 10 makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological measure under any applicable law
fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such measures.
When you convey a covered work, you waive any legal power to forbid circumvention of technological
measures to the extent such circumvention is effected by exercising rights under this License with respect
to the covered work, and you disclaim any intention to limit operation or modification of the work as a
means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided
that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep
intact all notices stating that this License and any non-permissive terms added in accord with section 7
apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of
this License along with the Program.
You may charge any price or no price for each copy that you convey, and you may offer support or
warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to produce it from the Program, in
the form of source code under the terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
b) The work must carry prominent notices stating that it is released under this License and any conditions
added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
c) You must license the entire work, as a whole, under this License to anyone who comes into possession
of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the
whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission
to license the work in any other way, but it does not invalidate such permission if you have separately
received it.
d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the
Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not
make them do so.
A compilation of a covered work with other separate and independent works, which are not by their
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program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the
compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's
users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not
cause this License to apply to the other parts of the aggregate.
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You may convey a covered work in object code form under the terms of sections 4 and 5, provided that
you also convey the machine-readable Corresponding Source under the terms of this License, in one of
these ways:
a) Convey the object code in, or embodied in, a physical product (including a physical distribution
medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily
used for software interchange.
b) Convey the object code in, or embodied in, a physical product (including a physical distribution
medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer
spare parts or customer support for that product model, to give anyone who possesses the object code
either (1) a copy of the Corresponding Source for all the software in the product that is covered by this
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Corresponding Source from a network server at no charge.
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received the object code with such an offer, in accord with subsection 6b.
d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer
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the place to copy the object code is a network server, the Corresponding Source may be on a different
server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the Corresponding Source. Regardless of
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long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the
object code and Corresponding Source of the work are being offered to the general public at no charge
under subsection 6d.
A separable portion of the object code, whose source code is excluded from the Corresponding Source as
a System Library, need not be included in conveying the object code work.
A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is
normally used for personal, family, or household purposes, or (2) anything designed or sold for
incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases
shall be resolved in favor of coverage. For a particular product received by a particular user, “normally
used” refers to a typical or common use of that class of product, regardless of the status of the particular
user or of the way in which the particular user actually uses, or expects or is expected to use, the product.
A product is a consumer product regardless of whether the product has substantial commercial, industrial
or non-consumer uses, unless such uses represent the only significant mode of use of the product.
“Installation Information” for a User Product means any methods, procedures, authorization keys, or other
information required to install and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must suffice to ensure that the continued
functioning of the modified object code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or specifically for use in, a User Product,
and the conveying occurs as part of a transaction in which the right of possession and use of the User
Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction
is characterized), the Corresponding Source conveyed under this section must be accompanied by the
Installation Information. But this requirement does not apply if neither you nor any third party retains the
ability to install modified object code on the User Product (for example, the work has been installed in
ROM).
The requirement to provide Installation Information does not include a requirement to continue to provide
support service, warranty, or updates for a work that has been modified or installed by the recipient, or
for the User Product in which it has been modified or installed. Access to a network may be denied when
the modification itself materially and adversely affects the operation of the network or violates the rules
and protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided, in accord with this section must
be in a format that is publicly documented (and with an implementation available to the public in source
code form), and must require no special password or key for unpacking, reading or copying.
7. Additional Terms.
“Additional permissions” are terms that supplement the terms of this License by making exceptions from
one or more of its conditions. Additional permissions that are applicable to the entire Program shall be
treated as though they were included in this License, to the extent that they are valid under applicable law.
If additional permissions apply only to part of the Program, that part may be used separately under those
permissions, but the entire Program remains governed by this License without regard to the additional
permissions.
When you convey a copy of a covered work, you may at your option remove any additional permissions
from that copy, or from any part of it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place additional permissions on material,
added by you to a covered work, for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you add to a covered work, you may (if
authorized by the copyright holders of that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License;
or
b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in
the Appropriate Legal Notices displayed by works containing it; or
c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such
material be marked in reasonable ways as different from the original version; or
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e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service
marks; or
f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material
(or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that
these contractual assumptions directly impose on those licensors and authors.
All other non-permissive additional terms are considered “further restrictions” within the meaning of
section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed
by this License along with a term that is a further restriction, you may remove that term. If a license
document contains a further restriction but permits relicensing or conveying under this License, you may
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restriction does not survive such relicensing or conveying.
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a statement of the additional terms that apply to those files, or a notice indicating where to find the
applicable terms.
Additional terms, permissive or non-permissive, may be stated in the form of a separately written license,
or stated as exceptions; the above requirements apply either way.
8. Termination.
You may not propagate or modify a covered work except as expressly provided under this License. Any
attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third paragraph of section 11).
However, if you cease all violation of this License, then your license from a particular copyright holder is
reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your
license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable
means prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder
notifies you of the violation by some reasonable means, this is the first time you have received notice of
violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30
days after your receipt of the notice.
Termination of your rights under this section does not terminate the licenses of parties who have received
copies or rights from you under this License. If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same material under section 10.
9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or run a copy of the Program. Ancillary
propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to
receive a copy likewise does not require acceptance. However, nothing other than this License grants you
permission to propagate or modify any covered work. These actions infringe copyright if you do not
accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance
of this License to do so.
10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically receives a license from the original
licensors, to run, modify and propagate that work, subject to this License. You are not responsible for
enforcing compliance by third parties with this License.
An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of
one, or subdividing an organization, or merging organizations. If propagation of a covered work results
from an entity transaction, each party to that transaction who receives a copy of the work also receives
whatever licenses to the work the party's predecessor in interest had or could give under the previous
paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in
interest, if the predecessor has it or can get it with reasonable efforts.
You may not impose any further restrictions on the exercise of the rights granted or affirmed under this
License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights
granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a
lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing
the Program or any portion of it.
11. Patents.
A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on
which the Program is based. The work thus licensed is called the contributor's “contributor version”.
A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor,
whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by
this License, of making, using, or selling its contributor version, but do not include claims that would be
infringed only as a consequence of further modification of the contributor version. For purposes of this
definition, “control” includes the right to grant patent sublicenses in a manner consistent with the
requirements of this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's
essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate
the contents of its contributor version.
In the following three paragraphs, a “patent license” is any express agreement or commitment, however
denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not
to sue for patent infringement). To “grant” such a patent license to a party means to make such an
agreement or commitment not to enforce a patent against the party.
If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the
work is not available for anyone to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means, then you must either (1) cause the
Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent
license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License,
to extend the patent license to downstream recipients. “Knowingly relying” means you have actual
knowledge that, but for the patent license, your conveying the covered work in a country, or your
recipient's use of the covered work in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by
procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the
covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work,
then the patent license you grant is automatically extended to all recipients of the covered work and
works based on it.
A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the
exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted
under this License. You may not convey a covered work if you are a party to an arrangement with a third
party that is in the business of distributing software, under which you make payment to the third party
based on the extent of your activity of conveying the work, and under which the third party grants, to any
of the parties who would receive the covered work from you, a discriminatory patent license (a) in
connection with copies of the covered work conveyed by you (or copies made from those copies), or (b)
primarily for and in connection with specific products or compilations that contain the covered work,
unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting any implied license or other defenses
to infringement that may otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the
conditions of this License, they do not excuse you from the conditions of this License. If you cannot
convey a covered work so as to satisfy simultaneously your obligations under this License and any other
pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to
terms that obligate you to collect a royalty for further conveying from those to whom you convey the
Program, the only way you could satisfy both those terms and this License would be to refrain entirely
from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have permission to link or combine any covered
work with a work licensed under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this License will continue to apply to the
part which is the covered work, but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of the GNU General Public License
from time to time. Such new versions will be similar in spirit to the present version, but may differ in
detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program specifies that a certain numbered
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following the terms and conditions either of that numbered version or of any later version published by
the Free Software Foundation. If the Program does not specify a version number of the GNU General
Public License, you may choose any version ever published by the Free Software Foundation.
If the Program specifies that a proxy can decide which future versions of the GNU General Public License
can be used, that proxy's public statement of acceptance of a version permanently authorizes you to
choose that version for the Program.
Later license versions may give you additional or different permissions. However, no additional obligations
are imposed on any author or copyright holder as a result of your choosing to follow a later version.
15. Disclaimer of Warranty.