php-doc-en/appendices/license.xml

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<appendix id="opl.license">
 <title>Open Publication License</title>
  <simpara>v1.0, 8 June 1999</simpara>
  <section id="opl.require">
   <title>I. REQUIREMENTS ON BOTH UNMODIFIED AND MODIFIED VERSIONS</title>
   <simpara>
    The Open Publication works may be reproduced and distributed in whole or
    in part, in any medium physical or electronic, provided that the terms of
    this license are adhered to, and that this license or an incorporation of
    it by reference (with any options elected by the author(s)
    and/or publisher) is displayed in the reproduction.
   </simpara>
   <simpara>
    Proper form for an incorporation by reference is as follows:
   </simpara>
   <para>
    Copyright (c) &lt;year&gt; by &lt;author's name or designee&gt;. This
    material may be distributed only subject to the terms and conditions set
    forth in the Open Publication License, vX.Y or later (the latest version
    is presently available at <ulink url="&url.opl;">&url.opl;</ulink>
    </para>
   <simpara>
    The reference must be immediately followed with any options elected by
    the author(s) and/or publisher of the document (see section VI).
    Commercial redistribution of Open Publication-licensed material is
    permitted. Any publication in standard (paper) book form shall require
    the citation of the original publisher and author. The publisher and
    author's names shall appear on all outer surfaces of the book. On all
    outer surfaces of the book the original publisher's name shall be as
    large as the title of the work and cited as possessive with respect to
    the title.
   </simpara>
  </section>

  <section id="opl.copyright">
   <title>II. COPYRIGHT</title>
   <simpara>
    The copyright to each Open Publication is owned by its author(s) or designee.
   </simpara>
  </section>

  <section id="opl.scope">
   <title>III. SCOPE OF LICENSE</title>
   <simpara>
    The following license terms apply to all Open Publication works, unless
    otherwise explicitly stated in the document.
   </simpara>
   <simpara>
    Mere aggregation of Open Publication works or a portion of an Open
    Publication work with other works or programs on the same media shall not
    cause this license to apply to those other works. The aggregate work shall
    contain a notice specifying the inclusion of the Open Publication material
    and appropriate copyright notice.
   </simpara>
   <simpara>
    SEVERABILITY. If any part of this license is found to be unenforceable in
    any jurisdiction, the remaining portions of the license remain in force.
   </simpara>
   <simpara>
    NO WARRANTY. Open Publication works are licensed and provided "as is"
    without warranty of any kind, express or implied, including, but not
    limited to, the implied warranties of merchantability and fitness for a
    particular purpose or a warranty of non-infringement.
   </simpara>
  </section>


  <section id="opl.modified.works">
   <title>IV. REQUIREMENTS ON MODIFIED WORKS</title>
   <para>
    All modified versions of documents covered by this license, including
    translations, anthologies, compilations and partial documents, must meet
    the following requirements:
   </para>
   <para>
    <orderedlist>
     <listitem>
      <simpara>
       The modified version must be labeled as such.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       The person making the modifications must be identified and the
       modifications dated.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Acknowledgement of the original author and publisher if applicable must
       be retained according to normal academic citation practices.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       The location of the original unmodified document must be identified.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       The original author's (or authors') name(s) may not be used to assert
       or imply endorsement of the resulting document without the original
       author's (or authors') permission.
      </simpara>
     </listitem>
    </orderedlist>
   </para>
  </section>

  <section id="opl.good-practice">
   <title>V. GOOD-PRACTICE RECOMMENDATIONS</title>
   <simpara>
    In addition to the requirements of this license, it is requested from and
    strongly recommended of redistributors that:
   </simpara>
   <para>
    <orderedlist>
     <listitem>
      <simpara>
       If you are distributing Open Publication works on hardcopy or CD-ROM,
       you provide email notification to the authors of your intent to
       redistribute at least thirty days before your manuscript or media
       freeze, to give the authors time to provide updated documents. This
       notification should describe modifications, if any, made to the document.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       All substantive modifications (including deletions) be either clearly
       marked up in the document or else described in an attachment to the
       document.
      </simpara>
     </listitem>
     <listitem>
      <simpara>
       Finally, while it is not mandatory under this license, it is considered
       good form to offer a free copy of any hardcopy and CD-ROM expression of
       an Open Publication-licensed work to its author(s).
      </simpara>
     </listitem>
    </orderedlist>
   </para>
  </section>

  <section id="opl.options">
   <title>VI. LICENSE OPTIONS</title>
   <simpara>
    The author(s) and/or publisher of an Open Publication-licensed document
    may elect certain options by appending language to the reference to or
    copy of the license. These options are considered part of the license
    instance and must be included with the license (or its incorporation by
    reference) in derived works.
   </simpara>
   <simpara>
    A. To prohibit distribution of substantively modified versions without the
    explicit permission of the author(s). "Substantive modification" is
    defined as a change to the semantic content of the document, and excludes
    mere changes in format or typographical corrections.
   </simpara>
   <simpara>
    To accomplish this, add the phrase `Distribution of substantively modified
    versions of this document is prohibited without the explicit permission of
    the copyright holder.' to the license reference or copy.
   </simpara>
   <simpara>
    B. To prohibit any publication of this work or derivative works in whole
    or in part in standard (paper) book form for commercial purposes is
    prohibited unless prior permission is obtained from the copyright holder.
   </simpara>
   <simpara>
    To accomplish this, add the phrase 'Distribution of the work or derivative
    of the work in any standard (paper) book form is prohibited unless prior
    permission is obtained from the copyright holder.' to the license
    reference or copy.
   </simpara>
  </section>
</appendix>