Statement of Purpose

The laws of most jurisdictions throughout the world automatically confer
exclusive Copyright and Related Rights (defined below) upon the creator
and subsequent owner(s) (each and all, an "owner") of an original work
of authorship and/or a database (each, a "Work").

Certain owners wish to permanently relinquish those rights to a Work for
the purpose of contributing to a commons of creative, cultural and
scientific works ("Commons") that the public can reliably and without
fear of later claims of infringement build upon, modify, incorporate in
other works, reuse and redistribute as freely as possible in any form
whatsoever and for any purposes, including without limitation commercial
purposes. These owners may contribute to the Commons to promote the
ideal of a free culture and the further production of creative, cultural
and scientific works, or to gain reputation or greater distribution for
their Work in part through the use and efforts of others.

For these and/or other purposes and motivations, and without any
expectation of additional consideration or compensation, the person
associating CC0 with a Work (the "Affirmer"), to the extent that he or
she is an owner of Copyright and Related Rights in the Work, voluntarily
elects to apply CC0 to the Work and publicly distribute the Work under
its terms, with knowledge of his or her Copyright and Related Rights in
the Work and the meaning and intended legal effect of CC0 on those
rights.

1. Copyright and Related Rights.

   A Work made available under CC0 may be protected by copyright and
   related or neighboring rights ("Copyright and Related Rights").
   Copyright and Related Rights include, but are not limited to, the
   following:

    i. the right to reproduce, adapt, distribute, perform, display,
    communicate, and translate a Work;
    
    ii. moral rights retained by the original author(s) and/or
    performer(s);

    iii. publicity and privacy rights pertaining to a person's image or
    likeness depicted in a Work;

    iv. rights protecting against unfair competition in regards to a
    Work, subject to the limitations in paragraph 4(a), below;

    v. rights protecting the extraction, dissemination, use and reuse of
    data in a Work;

    vi. database rights (such as those arising under Directive 96/9/EC
    of the European Parliament and of the Council of 11 March 1996 on
    the legal protection of databases, and under any national
    implementation thereof, including any amended or successor version
    of such directive); and

    vii. other similar, equivalent or corresponding rights throughout
    the world based on applicable law or treaty, and any national
    implementations thereof.

2. Waiver.

   To the greatest extent permitted by, but not in contravention of,
   applicable law, Affirmer hereby overtly, fully, permanently,
   irrevocably and unconditionally waives, abandons, and surrenders all
   of Affirmer's Copyright and Related Rights and associated claims and
   causes of action, whether now known or unknown (including existing as
   well as future claims and causes of action), in the Work (i) in all
   territories worldwide, (ii) for the maximum duration provided by
   applicable law or treaty (including future time extensions), (iii) in
   any current or future medium and for any number of copies, and (iv)
   for any purpose whatsoever, including without limitation commercial,
   advertising or promotional purposes (the "Waiver"). Affirmer makes
   the Waiver for the benefit of each member of the public at large and
   to the detriment of Affirmer's heirs and successors, fully intending
   that such Waiver shall not be subject to revocation, rescission,
   cancellation, termination, or any other legal or equitable action to
   disrupt the quiet enjoyment of the Work by the public as contemplated
   by Affirmer's express Statement of Purpose.

3. Public License Fallback.

   Should any part of the Waiver for any reason be judged legally
   invalid or ineffective under applicable law, then the Waiver shall be
   preserved to the maximum extent permitted taking into account
   Affirmer's express Statement of Purpose. In addition, to the extent
   the Waiver is so judged Affirmer hereby grants to each affected
   person a royalty-free, non transferable, non sublicensable, non
   exclusive, irrevocable and unconditional license to exercise
   Affirmer's Copyright and Related Rights in the Work
   
   (i) in all territories worldwide,

   (ii) for the maximum duration provided by applicable law or treaty
   (including future time extensions),

   (iii) in any current or future medium and for any number of copies,
   and

   (iv) for any purpose whatsoever, including without limitation
   commercial, advertising or promotional purposes (the "License").

   The License shall be deemed effective as of the date CC0 was applied
   by Affirmer to the Work. Should any part of the License for any
   reason be judged legally invalid or ineffective under applicable law,
   such partial invalidity or ineffectiveness shall not invalidate the
   remainder of the License, and in such case Affirmer hereby affirms
   that he or she will not

   (i) exercise any of his or her remaining Copyright and Related Rights
   in the Work or

   (ii) assert any associated claims and causes of action with respect
   to the Work, in either case contrary to Affirmer's express Statement
   of Purpose.

4. Limitations and Disclaimers.

    a. No trademark or patent rights held by Affirmer are waived,
    abandoned, surrendered, licensed or otherwise affected by this
    document.

    b. Affirmer offers the Work as-is and makes no representations or
    warranties of any kind concerning the Work, express, implied,
    statutory or otherwise, including without limitation warranties of
    title, merchantability, fitness for a particular purpose, non
    infringement, or the absence of latent or other defects, accuracy,
    or the present or absence of errors, whether or not discoverable,
    all to the greatest extent permissible under applicable law.

    c. Affirmer disclaims responsibility for clearing rights of other
    persons that may apply to the Work or any use thereof, including
    without limitation any person's Copyright and Related Rights in the
    Work. Further, Affirmer disclaims responsibility for obtaining any
    necessary consents, permissions or other rights required for any use
    of the Work.

    d. Affirmer understands and acknowledges that Creative Commons is
    not a party to this document and has no duty or obligation with
    respect to this CC0 or use of the Work.

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https://creativecommons.org/publicdomain/zero/1.0/legalcode