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+CC Attribution
+==============
+
+From https://creativecommons.org/licenses/by/4.0/legalcode
+
+Creative Commons Legal Code
+
+Attribution 4.0 International
+
+Creative Commons Corporation ("Creative Commons") is not a law firm
+and does not provide legal services or legal advice. Distribution of
+Creative Commons public licenses does not create a lawyer-client or
+other relationship. Creative Commons makes its licenses and related
+information available on an "as-is" basis. Creative Commons gives no
+warranties regarding its licenses, any material licensed under their
+terms and conditions, or any related information. Creative Commons
+disclaims all liability for damages resulting from their use to the
+fullest extent possible.
+
+Using Creative Commons Public Licenses
+
+Creative Commons public licenses provide a standard set of terms and
+conditions that creators and other rights holders may use to share
+original works of authorship and other material subject to copyright
+and certain other rights specified in the public license below. The
+following considerations are for informational purposes only, are not
+exhaustive, and do not form part of our licenses.
+
+Considerations for licensors: Our public licenses are intended for use
+by those authorized to give the public permission to use material in
+ways otherwise restricted by copyright and certain other rights. Our
+licenses are irrevocable. Licensors should read and understand the
+terms and conditions of the license they choose before applying
+it. Licensors should also secure all rights necessary before applying
+our licenses so that the public can reuse the material as
+expected. Licensors should clearly mark any material not subject to
+the license. This includes other CC-licensed material, or material
+used under an exception or limitation to copyright. More
+considerations for licensors.
+
+Considerations for the public: By using one of our public licenses, a
+licensor grants the public permission to use the licensed material
+under specified terms and conditions. If the licensor’s permission is
+not necessary for any reason–for example, because of any applicable
+exception or limitation to copyright–then that use is not regulated by
+the license. Our licenses grant only permissions under copyright and
+certain other rights that a licensor has authority to grant. Use of
+the licensed material may still be restricted for other reasons,
+including because others have copyright or other rights in the
+material. A licensor may make special requests, such as asking that
+all changes be marked or described. Although not required by our
+licenses, you are encouraged to respect those requests where
+reasonable. More considerations for the public.
+
+Creative Commons Attribution 4.0 International Public License
+
+By exercising the Licensed Rights (defined below), You accept and
+agree to be bound by the terms and conditions of this Creative Commons
+Attribution 4.0 International Public License ("Public License"). To
+the extent this Public License may be interpreted as a contract, You
+are granted the Licensed Rights in consideration of Your acceptance of
+these terms and conditions, and the Licensor grants You such rights in
+consideration of benefits the Licensor receives from making the
+Licensed Material available under these terms and conditions.
+
+------------------------------------------------------------------------
+
+Section 1 – Definitions.
+
+ a. Adapted Material means material subject to Copyright and Similar
+ Rights that is derived from or based upon the Licensed Material
+ and in which the Licensed Material is translated, altered,
+ arranged, transformed, or otherwise modified in a manner requiring
+ permission under the Copyright and Similar Rights held by the
+ Licensor. For purposes of this Public License, where the Licensed
+ Material is a musical work, performance, or sound recording,
+ Adapted Material is always produced where the Licensed Material is
+ synched in timed relation with a moving image.
+ b. Adapter's License means the license You apply to Your Copyright
+ and Similar Rights in Your contributions to Adapted Material in
+ accordance with the terms and conditions of this Public License.
+ c. Copyright and Similar Rights means copyright and/or similar rights
+ closely related to copyright including, without limitation,
+ performance, broadcast, sound recording, and Sui Generis Database
+ Rights, without regard to how the rights are labeled or
+ categorized. For purposes of this Public License, the rights
+ specified in Section 2(b)(1)-(2) are not Copyright and Similar
+ Rights.
+ d. Effective Technological Measures means those measures that, in the
+ absence of proper authority, may not be circumvented under laws
+ fulfilling obligations under Article 11 of the WIPO Copyright
+ Treaty adopted on December 20, 1996, and/or similar international
+ agreements.
+ e. Exceptions and Limitations means fair use, fair dealing, and/or
+ any other exception or limitation to Copyright and Similar Rights
+ that applies to Your use of the Licensed Material.
+ f. Licensed Material means the artistic or literary work, database,
+ or other material to which the Licensor applied this Public
+ License.
+ g. Licensed Rights means the rights granted to You subject to the
+ terms and conditions of this Public License, which are limited to
+ all Copyright and Similar Rights that apply to Your use of the
+ Licensed Material and that the Licensor has authority to license.
+ h. Licensor means the individual(s) or entity(ies) granting rights
+ under this Public License.
+ i. Share means to provide material to the public by any means or
+ process that requires permission under the Licensed Rights, such
+ as reproduction, public display, public performance, distribution,
+ dissemination, communication, or importation, and to make material
+ available to the public including in ways that members of the
+ public may access the material from a place and at a time
+ individually chosen by them.
+ j. Sui Generis Database Rights means rights other than copyright
+ resulting from Directive 96/9/EC of the European Parliament and of
+ the Council of 11 March 1996 on the legal protection of databases,
+ as amended and/or succeeded, as well as other essentially
+ equivalent rights anywhere in the world.
+ k. You means the individual or entity exercising the Licensed Rights
+ under this Public License. Your has a corresponding meaning.
+
+Section 2 – Scope.
+
+ a. License grant.
+ 1. Subject to the terms and conditions of this Public License,
+ the Licensor hereby grants You a worldwide, royalty-free,
+ non-sublicensable, non-exclusive, irrevocable license to
+ exercise the Licensed Rights in the Licensed Material to:
+ A. reproduce and Share the Licensed Material, in whole or in
+ part; and
+ B. produce, reproduce, and Share Adapted Material.
+ 2. Exceptions and Limitations. For the avoidance of doubt, where
+ Exceptions and Limitations apply to Your use, this Public
+ License does not apply, and You do not need to comply with its
+ terms and conditions.
+ 3. Term. The term of this Public License is specified in Section
+ 6(a).
+ 4. Media and formats; technical modifications allowed. The
+ Licensor authorizes You to exercise the Licensed Rights in all
+ media and formats whether now known or hereafter created, and
+ to make technical modifications necessary to do so. The
+ Licensor waives and/or agrees not to assert any right or
+ authority to forbid You from making technical modifications
+ necessary to exercise the Licensed Rights, including technical
+ modifications necessary to circumvent Effective Technological
+ Measures. For purposes of this Public License, simply making
+ modifications authorized by this Section 2(a)(4) never
+ produces Adapted Material.
+ 5. Downstream recipients.
+ A. Offer from the Licensor – Licensed Material. Every
+ recipient of the Licensed Material automatically receives
+ an offer from the Licensor to exercise the Licensed Rights
+ under the terms and conditions of this Public License.
+ B. No downstream restrictions. You may not offer or impose
+ any additional or different terms or conditions on, or
+ apply any Effective Technological Measures to, the
+ Licensed Material if doing so restricts exercise of the
+ Licensed Rights by any recipient of the Licensed Material.
+ 6. No endorsement. Nothing in this Public License constitutes or
+ may be construed as permission to assert or imply that You
+ are, or that Your use of the Licensed Material is, connected
+ with, or sponsored, endorsed, or granted official status by,
+ the Licensor or others designated to receive attribution as
+ provided in Section 3(a)(1)(A)(i).
+ b. Other rights.
+ 1. Moral rights, such as the right of integrity, are not licensed
+ under this Public License, nor are publicity, privacy, and/or
+ other similar personality rights; however, to the extent
+ possible, the Licensor waives and/or agrees not to assert any
+ such rights held by the Licensor to the limited extent
+ necessary to allow You to exercise the Licensed Rights, but
+ not otherwise.
+ 2. Patent and trademark rights are not licensed under this Public
+ License.
+ 3. To the extent possible, the Licensor waives any right to
+ collect royalties from You for the exercise of the Licensed
+ Rights, whether directly or through a collecting society under
+ any voluntary or waivable statutory or compulsory licensing
+ scheme. In all other cases the Licensor expressly reserves any
+ right to collect such royalties.
+
+Section 3 – License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+ a. Attribution.
+
+ 1. If You Share the Licensed Material (including in modified
+ form), You must:
+ A. retain the following if it is supplied by the Licensor
+ with the Licensed Material:
+ i. identification of the creator(s) of the Licensed
+ Material and any others designated to receive
+ attribution, in any reasonable manner requested by the
+ Licensor (including by pseudonym if designated);
+ ii. a copyright notice;
+ iii. a notice that refers to this Public License;
+ iv. a notice that refers to the disclaimer of warranties;
+ v. a URI or hyperlink to the Licensed Material to the
+ extent reasonably practicable;
+ B. indicate if You modified the Licensed Material and retain
+ an indication of any previous modifications; and
+ C. indicate the Licensed Material is licensed under this
+ Public License, and include the text of, or the URI or
+ hyperlink to, this Public License.
+ 2. You may satisfy the conditions in Section 3(a)(1) in any
+ reasonable manner based on the medium, means, and context in
+ which You Share the Licensed Material. For example, it may be
+ reasonable to satisfy the conditions by providing a URI or
+ hyperlink to a resource that includes the required
+ information.
+ 3. If requested by the Licensor, You must remove any of the
+ information required by Section 3(a)(1)(A) to the extent
+ reasonably practicable.
+ 4. If You Share Adapted Material You produce, the Adapter's
+ License You apply must not prevent recipients of the Adapted
+ Material from complying with this Public License.
+
+Section 4 – Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+ a. for the avoidance of doubt, Section 2(a)(1) grants You the right to
+ extract, reuse, reproduce, and Share all or a substantial portion of the
+ contents of the database;
+ b. if You include all or a substantial portion of the database
+ contents in a database in which You have Sui Generis Database
+ Rights, then the database in which You have Sui Generis Database
+ Rights (but not its individual contents) is Adapted Material; and
+ c. You must comply with the conditions in Section 3(a) if You Share
+ all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+Section 5 – Disclaimer of Warranties and Limitation of Liability.
+
+ a. Unless otherwise separately undertaken by the Licensor, to the
+ extent possible, the Licensor offers the Licensed Material as-is
+ and as-available, and makes no representations or warranties of
+ any kind concerning the Licensed Material, whether express,
+ implied, statutory, or other. This includes, without limitation,
+ warranties of title, merchantability, fitness for a particular
+ purpose, non-infringement, absence of latent or other defects,
+ accuracy, or the presence or absence of errors, whether or not
+ known or discoverable. Where disclaimers of warranties are not
+ allowed in full or in part, this disclaimer may not apply to You.
+ b. To the extent possible, in no event will the Licensor be liable to
+ You on any legal theory (including, without limitation,
+ negligence) or otherwise for any direct, special, indirect,
+ incidental, consequential, punitive, exemplary, or other losses,
+ costs, expenses, or damages arising out of this Public License or
+ use of the Licensed Material, even if the Licensor has been
+ advised of the possibility of such losses, costs, expenses, or
+ damages. Where a limitation of liability is not allowed in full or
+ in part, this limitation may not apply to You.
+ c. The disclaimer of warranties and limitation of liability provided
+ above shall be interpreted in a manner that, to the extent
+ possible, most closely approximates an absolute disclaimer and
+ waiver of all liability.
+
+Section 6 – Term and Termination.
+
+ a. This Public License applies for the term of the Copyright and
+ Similar Rights licensed here. However, if You fail to comply with
+ this Public License, then Your rights under this Public License
+ terminate automatically.
+ b. Where Your right to use the Licensed Material has terminated under
+ Section 6(a), it reinstates:
+ 1. automatically as of the date the violation is cured, provided
+ it is cured within 30 days of Your discovery of the violation;
+ or
+ 2. upon express reinstatement by the Licensor.
+ For the avoidance of doubt, this Section 6(b) does not affect any
+ right the Licensor may have to seek remedies for Your violations
+ of this Public License.
+ c. For the avoidance of doubt, the Licensor may also offer the
+ Licensed Material under separate terms or conditions or stop
+ distributing the Licensed Material at any time; however, doing so
+ will not terminate this Public License.
+ d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+ License.
+
+Section 7 – Other Terms and Conditions.
+
+ a. The Licensor shall not be bound by any additional or different
+ terms or conditions communicated by You unless expressly agreed.
+ b. Any arrangements, understandings, or agreements regarding the
+ Licensed Material not stated herein are separate from and
+ independent of the terms and conditions of this Public License.
+
+Section 8 – Interpretation.
+
+ a. For the avoidance of doubt, this Public License does not, and
+ shall not be interpreted to, reduce, limit, restrict, or impose
+ conditions on any use of the Licensed Material that could lawfully
+ be made without permission under this Public License.
+ b. To the extent possible, if any provision of this Public License is
+ deemed unenforceable, it shall be automatically reformed to the
+ minimum extent necessary to make it enforceable. If the provision
+ cannot be reformed, it shall be severed from this Public License
+ without affecting the enforceability of the remaining terms and
+ conditions.
+ c. No term or condition of this Public License will be waived and no
+ failure to comply consented to unless expressly agreed to by the
+ Licensor.
+ d. Nothing in this Public License constitutes or may be interpreted
+ as a limitation upon, or waiver of, any privileges and immunities
+ that apply to the Licensor or You, including from the legal
+ processes of any jurisdiction or authority.
+
+------------------------------------------------------------------------
+
+Creative Commons is not a party to its public
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