  <p>
    <em>This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current <abbr title="World Wide Web Consortium">W3C</abbr> publications and the latest revision of this technical report can be found in the <a href="https://www.w3.org/TR/"><abbr title="World Wide Web Consortium">W3C</abbr> technical reports index</a> at https://www.w3.org/TR/.</em>
  </p>

  <p>
    This document was published by the <a href="https://www.w3.org/sw/">Service Workers Working Group</a>
    as an Editors Draft. This document is intended to become a W3C Recommendation.
  </p>

  <p>[STATUSTEXT]</p>

  <p>
    Feedback and comments on this specification are welcome, please send them to <a href="mailto:public-webapps@w3.org?subject=%5B[SHORTNAME]%5D">public-webapps@w3.org</a> (<a href="mailto:public-webapps@w3.org?subject=subscribe">subscribe</a>, <a href="https://lists.w3.org/Archives/Public/public-webapps/">archives</a>) with <code>&#x5B;[SHORTNAME]&#x5D;</code> at the start of your email's subject.
  </p>
  
  <p>
    Publication as an Editors Draft does not imply endorsement by the
    <abbr title="World Wide Web Consortium">W3C</abbr> Membership. This is a draft document and may
    be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite
    this document as other than work in progress.
  </p>
  <p>
    This document was produced by a group operating under the <a href="https://www.w3.org/Consortium/Patent-Policy/"><abbr title="World Wide Web Consortium">W3C</abbr> Patent Policy</a>. <abbr title="World Wide Web Consortium">W3C</abbr> maintains a <a href="https://www.w3.org/2004/01/pp-impl/101220/status" rel="disclosure">public list of any patent disclosures</a> made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains <a href="https://www.w3.org/Consortium/Patent-Policy/#def-essential">Essential Claim(s)</a> must disclose the information in accordance with <a href="https://www.w3.org/Consortium/Patent-Policy/#sec-Disclosure">section 6 of the <abbr title="World Wide Web Consortium">W3C</abbr> Patent Policy</a>.
  </p>
  <p>This document is governed by the <a id="w3c_process_revision" href="https://www.w3.org/2019/Process-20190301/">1 March 2019 W3C Process Document</a>.
  </p>
