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<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<title>Publishing Maintenance Working Group Charter</title>
<link rel="stylesheet" href="https://www.w3.org/2005/10/w3cdoc.css" type="text/css" media="screen">
<link rel="stylesheet" type="text/css" href="https://www.w3.org/OldGuide/pubrules-style.css">
<link rel="stylesheet" type="text/css" href="https://www.w3.org/2006/02/charter-style.css">
<style>
main {
max-width: 60em;
margin: 0 auto;
}
ul#navbar {
font-size: small;
}
dt.spec {
font-weight: bold;
}
dt.spec .new {
background: yellow;
}
ul.out-of-scope>li {
font-weight: bold;
}
ul.out-of-scope>li>ul>li {
font-weight: normal;
}
.issue {
background: cornsilk;
font-style: italic;
}
.todo {
color: #900;
}
footer {
font-size: small;
}
</style>
</head>
<body>
<header id="header">
<aside>
<ul id="navbar">
<li><a href="#background">Background</a></li>
<li><a href="#scope">Scope</a></li>
<li><a href="#deliverables">Deliverables</a></li>
<li><a href="#success-criteria">Success Criteria</a></li>
<li><a href="#coordination">Coordination</a></li>
<li><a href="#participation">Participation</a></li>
<li><a href="#communication">Communication</a></li>
<li><a href="#decisions">Decision Policy</a></li>
<li><a href="#patentpolicy">Patent Policy</a></li>
<li><a href="#licensing">Licensing</a></li>
<li><a href="#about">About this Charter</a></li>
</ul>
</aside>
<p>
<a href="https://www.w3.org/"><img alt="W3C" height="48" src="https://www.w3.org/Icons/w3c_home"
width="72"></a>
</p>
</header>
<main>
<h1 id="title"><i class="todo">[DRAFT]</i> Publishing Maintenance Working Group Charter</h1>
<!-- replace DRAFT with PROPOSED when the AC review starts -->
<!-- delete PROPOSED after AC review completed -->
<p class="mission">
The <strong>mission</strong> of the Publishing Maintenance Working Group is to maintain the Recommendations
developed by the <a href="https://www.w3.org/publishing/groups/publ-wg/">Audiobooks</a> and the
<a href="https://www.w3.org/publishing/groups/epub-wg/">EPUB</a> Working Groups, and work on new
features and ideas to incrementally improve these Recommendations, provide stable
satellite specifications in the form of Working Group Notes, or provide the base for building the next
major revisions of the publishing specifications.
</p>
<div class="noprint">
<p class="join"><a href="https://www.w3.org/groups/wg/pm/join/">Join the Publishing Maintenance Working Group.</a></p>
</div>
<!-- delete the GH link after AC review completed -->
<p style="padding: 0.5ex; border: 1px solid green; width: 89%"> This proposed charter is available
on <a href="https://github.com/w3c/publ-maintenance-wg-charter">GitHub</a>.
<i class="todo">Feel free to raise <a href="https://github.com/w3c/publ-maintenance-wg-charter/issues">issues</a></i>.
</p>
<div id="details">
<table class="summary-table">
<tr id="Status">
<th>
Charter Status
</th>
<td>
See the <a href="https://www.w3.org/groups/wg/pm/charters/">group
status page</a> and <a href="#history">detailed change history</a>.
</td>
</tr>
<tr id="Duration">
<th>
Start date
</th>
<td>
<i class="todo">TBD</i>
</td>
</tr>
<tr id="CharterEnd">
<th>
End date
</th>
<td>
<i class="todo">TBD + 2 years</i>
</td>
</tr>
<tr>
<th>
Chairs
</th>
<td>
Wendy Reid, Rakuten Kobo<br>
Shinya Takami (高見真也), Kadokawa
</td>
</tr>
<tr>
<th>
Team Contacts
</th>
<td>
<a href="mailto:ivan@w3.org">Ivan Herman</a> (0.20 <abbr title="Full-Time Equivalent">FTE</abbr>)
</td>
</tr>
<tr>
<th>
Meeting Schedule
</th>
<td>
<strong>Teleconferences:</strong> On an as-needed basis, at least every month.
<br>
<strong>Face-to-face:</strong> we will meet during the W3C's annual Technical Plenary week;
additional face-to-face meetings may be scheduled by consent of the participants,
usually no more than three per year.
</td>
</tr>
</table>
</div>
<div id="background" class="background">
<h2>Motivation and Background</h2>
<p>
For the past few years, the Publishing Maintenance Working Group (under its
<a href="https://www.w3.org/2023/06/pmwg-charter.html">previous charter</a>)
has maintained the specifications originally published by the
<a href="https://www.w3.org/publishing/groups/publ-wg/">Audiobooks Working Group</a>
and the <a href="https://www.w3.org/publishing/groups/epub-wg/">EPUB Working Group</a>.
During that time new features and demands were put forward by the publishing community that the
Working Group was not chartered to answer.
</p>
<p>
The Publishing Maintenance Working Group also plays a role in supporting the broader
publishing community in developing guidance and resources in response to changes in
international accessibility legislation. This includes publishing Working Group Notes
in response to legislation such as the European Accessibility Act (EAA) or the Americans with Disabilities Act (ADA), and to provide
guidance on how EPUB relates to commonly referenced standards like <a href="https://www.w3.org/TR/WCAG22">WCAG</a>.
</p>
<p>
This charter extends the previous charter by adding features to incrementally improve
these Recommendations based on industry demands, provide stable satellite specifications in the
form of Working Group Notes, or to provide the base for building the next major revisions of the
publishing specifications.
</p>
</div>
<section id="scope" class="scope">
<h2>Scope</h2>
<p>
The Working Group plans to work on new technical features for the
<a href="https://www.w3.org/TR/epub-33/">EPUB 3.3</a>,
<a href="https://www.w3.org/TR/epub-rs-33/">EPUB Reading Systems 3.3</a>,
and <a href="https://www.w3.org/TR/epub-a11y-11/">EPUB Accessibility 1.1</a> Recommendations,
answering the needs of the publishing community and based on previous incubation work. These are:
</p>
<ul>
<li>
Define a standard way to publish Continuously Scrolled Comics (a.k.a. Webtoons) in EPUB.
See the <a href="https://github.com/w3c/pm-wg/wiki/Continuously-Scrolled-Comics-(a.k.a.-Webtoons)-in-EPUB">wiki
page on the group's repository</a> for a background, and for further details and references.
</li>
<li>
Define an interoperable annotation standard for EPUB, based on the W3C Web
Annotation <a href="https://www.w3.org/TR/annotation-model/">Data Model</a> and
<a href="https://www.w3.org/TR/annotation-vocab/">Vocabulary</a>, aiming at
interchangeable annotations.
Standard annotation selectors can also be used as standard locators for location-based features
such as bookmarks and citations.
These features would be particularly important for educational and STEM publishing.
See the <a href="https://github.com/readium/annotations">documentation</a> of
the Readium specification on Annotations and its experimental implementation in EDRLab's
<a href="https://thorium.edrlab.org/en/">Thorium Reader</a> that can be used as a starting point.
</li>
<li>
Work with the Publishing CG's <a href="https://github.com/w3c/publ-a11y/">accessibility
task force</a> to incorporate incubated features.
</li>
<li>
Develop guidance to help publishers understand legislated ebook accessibility requirements, as appropriate.
</li>
</ul>
<p>
Furthermore, the Working Group will also work on features which, though mostly maintenance in
nature, involve adding new features to the Recommendations. These are as follows:
</p>
<ul>
<li>
Based on the analysis of current use and deployment, review and possibly update the
specification of the fixed-layout properties addressing spreads
(e.g., <code>spread</code>, <code>page-spread-*</code>, <code>rendition:spread</code>).
See the <a href="https://www.w3.org/2024/10/Manga_tpac_breakout.pdf">breakout presentation at TPAC 2024</a>.
</li>
<li>
Explicitly define the relationship between the <code><script></code> element
(including resources used by the referenced scripts) and exempt resources, for example in
view of the inclusion of Web Assembly (<code>.wasm</code>) content in EPUB. See the (postponed)
<a href="https://github.com/w3c/epub-specs/pull/2655">EPUB Pull Request</a> for further details.
</li>
</ul>
<p>
Finally, the Working Group will also incubate issues without necessarily aiming at the creation of final
Recommendations during the lifetime of this charter.
The results may be incorporated in future versions of the EPUB specifications or published as
Working Group notes.
These include:
</p>
<ul>
<li>Allow non-XML HTML as content document in EPUB.</li>
<li>
Address the general accessibility issues of fixed layout content, with a particular focus on
areas where the content cannot currently meet WCAG requirements.
</li>
<li>
Address issues related to the evolution of synchronized media in publishing, including the usage of technologies like <a href="https://www.w3.org/TR/webvtt1/">WebVTT</a>.
</li>
<li>
Address security or privacy issues that may arise and require changes in a Recommendation.
</li>
</ul>
<p>
As a result of this work, the Working Group will produce an updated version of EPUB 3,
referred to as “EPUB 3.4” in this document. It is a primary goal of the new EPUB version to
remain backward compatible with EPUB 3.3 (i.e., existing conformant EPUB 3.3 would remain
conformant EPUB 3.4 documents).
</p>
<p id="isopas">
Depending on community discussions and demands, this Working Group may also decide to submit the EPUB 3.4,
the EPUB Reading Systems 3.4, and the EPUB Accessibility 1.x specifications to
<a href="https://www.iso.org/committee/45020.html">ISO/IEC JTC1</a> to be published as ISO/IEC standards.
If the decision is to proceed with a submission, this would follow
the <a href="https://www.w3.org/2010/03/w3c-pas-submission.html">PAS Submission process</a>.
This would obsolete the current ISO/IEC 23736-1-6:2020 standards based on
<a href="https://idpf.org/epub/301/spec/epub-publications.html">EPUB 3.0.1</a> (originally published in 2014),
as well as the separate ISO/IEC 23761:2021 EPUB Accessibility standard.
The PAS submission would not affect the current distribution rights of the documents, which will remain free on
www.w3.org, and it can also be expected that the documents will be available on the ISO Web site at no costs as
<a href="https://standards.iso.org/ittf/PubliclyAvailableStandards/index.html">JTC1 freely available standards</a>.
The submission would only permit minor editorial changes on the versions of the specifications submitted to ISO.
</p>
<p>
The Working Group also continues to maintain the
<a href="https://www.w3.org/TR/pub-manifest/">Publication Manifest</a> and
<a href="https://www.w3.org/TR/audiobooks/">Audiobooks</a> Recommendations, as well as
related Notes such as the
<a href="https://www.w3.org/TR/lpf/">Lightweight Packaging Format</a>.
For these specifications, <a href="https://www.w3.org/policies/process/class-4">class 4</a> changes are allowed.
</p>
<p>
For a complete list of documents maintained by this Working Group,
see the <a href="https://www.w3.org/groups/wg/pm/publications">publication list</a> of the Group,
as well as the documents published by the <a href="https://www.w3.org/groups/wg/epub/publications">EPUB</a> and
<a href="https://www.w3.org/groups/wg/publishing/publications/">Digital Publishing</a> Working Groups.
</p>
<section id="section-out-of-scope">
<h3 id="out-of-scope">Out of Scope</h3>
<p>The following features are out of scope and will not be addressed by this Working Group:</p>
<ul class="out-of-scope">
<li>
Removal of any existing features defined by EPUB 3.
Existing features will only be deprecated if they are not needed to support existing EPUB 3
content, as stated in
<a href="https://www.w3.org/TR/html-design-principles/#support-existing-content">HTML’s design
principles</a>.
</li>
<li>
Digital Rights Management (DRM) features for Audiobooks or EPUB Publications.
</li>
<li>
New document identification schemes (i.e., alternatives to DOI or ISBN).
</li>
<li>
New packaging and serialization formats for audiobooks or EPUB 3 files, i.e., alternatives to
the <a href="https://www.w3.org/TR/lpf/">Lightweight Packaging</a> or the <a
href='https://www.w3.org/TR/epub-33/#sec-ocf'>EPUB Open Container formats</a>, respectively.
</li>
<li>
Any new metadata that can be deferred to more appropriate Working Groups or external standards organizations.
</li>
<li>
Any new elements, attributes, properties, or values that would create a fork from Open Web
technologies (e.g., HTML, CSS or SVG).
</li>
<li>
Any new Package Document properties or values that influence rendering inside viewports that can
be deferred to more appropriate Working Groups.
</li>
<li>
EPUB or Audiobooks authoring tools.
</li>
</ul>
</section>
</section>
<section id="deliverables">
<h2>
Deliverables
</h2>
<p>
The current status of publications updated/published by the Publishing Maintenance Working Group is
available on the <a href="https://www.w3.org/groups/wg/pm/publications">publication list</a> of the
group. (Non-updated documents remain on the publication lists of the
<a href="https://www.w3.org/groups/wg/publishing/publications">Audiobooks</a>
and <a href="https://www.w3.org/groups/wg/epub/publications">EPUB</a> Working Groups.)
</p>
<section id="normative">
<h3>
Normative Specifications
</h3>
<p>The Working Group will maintain the following W3C normative specifications:</p>
<dl>
<dt id="pub-manifest" class="spec"><a href="https://www.w3.org/TR/pub-manifest/">Publication Manifest</a></dt>
<dd>
<p>
This specification defines a general manifest format for expressing information about a digital publication.
It uses <a href="https://schema.org">schema.org</a> metadata augmented to include various structural properties about publications,
serialized in <a href="https://www.w3.org/TR/json-ld11/">json-ld11</a>, to enable interoperability between publishing
formats while accommodating variances in the information that needs to be expressed.
</p>
<p class="draft-status">
<b>Draft state:</b> <a href="https://www.w3.org/TR/pub-manifest/">Recommendation.</a>
</p>
<p>
<b>Exclusion Draft:</b> <a href='https://www.w3.org/TR/2019/CR-pub-manifest-20191205/'>https://www.https://www.w3.org/TR/2019/CR-pub-manifest-20191205/</a>.
Exclusion period <b>began</b> 2019-12-05; Exclusion period <b>ended</b> 2020-02-03.
</p>
<p>
<b>Exclusion Draft Charter:</b> <a href='https://www.w3.org/2017/04/publ-wg-charter/'>https://www.w3.org/2017/04/publ-wg-charter/</a>.
</p>
</dd>
<dt id="audiobooks" class="spec"><a href="https://www.w3.org/TR/audiobooks/">Audiobooks</a></dt>
<dd>
<p>
This specification describes the requirements for the creation of audiobooks, using a profile of the Publication
Manifest specification.
</p>
<p class="draft-status">
<b>Draft state:</b> <a href="https://www.w3.org/TR/audiobooks/">Recommendation.</a>
</p>
<p>
<b>Exclusion Draft:</b> <a
href='https://www.w3.org/TR/2019/CR-audiobooks-20191205/'>https://www.w3.org/TR/2019/CR-audiobooks-20191205/</a>.
Exclusion period <b>began</b> 2019-12-05; Exclusion period <b>ended</b> 2020-02-03.
</p>
<p>
<b>Exclusion Draft Charter:</b> <a
href='https://www.w3.org/2017/04/publ-wg-charter/'>https://www.w3.org/2017/04/publ-wg-charter/</a>.
</p>
</dd>
<dt id="epub-33" class="spec">EPUB 3.4</dt>
<dd>
<p>
This specification defines the authoring requirements for EPUB publications and represents the third major revision of
the standard.
</p>
<p class="draft-status">
<b>Draft state:</b> <a href="https://www.w3.org/TR/epub-33/">Recommendation.</a>
</p>
<p>
<b>Exclusion Draft:</b> <a
href=' https://www.w3.org/TR/2023/CR-epub-33-20230221/'>https://www.w3.org/TR/2023/CR-epub-33-20230221/</a>.
Exclusion period <b>began</b> 2023-02-21; Exclusion period <b>ended</b> 2023-04-22.
</p>
<p>
<b>Exclusion Draft Charter:</b> <a
href='https://www.w3.org/2020/12/epub3-wg-charter.html'>https://www.w3.org/2020/12/epub3-wg-charter.html</a>.
</p>
</dd>
<dt id="epub-rs-33" class="spec">EPUB Reading Systems 3.4</dt>
<dd>
<p>
This specification defines the conformance requirements for EPUB® 3 reading systems — the user agents that render EPUB
publications.
</p>
<p class="draft-status">
<b>Draft state:</b> <a href="https://www.w3.org/TR/epub-rs-33/">Recommendation.</a>
</p>
<p>
<b>Exclusion Draft:</b> <a
href='https://www.w3.org/TR/2023/CR-epub-rs-33-20230221/'>https://www.w3.org/TR/2023/CR-epub-rs-33-20230221/</a>.
Exclusion period <b>began</b> 2023-02-21; Exclusion period <b>ended</b> 2023-04-22.
</p>
<p>
<b>Exclusion Draft Charter:</b> <a
href='https://www.w3.org/2020/12/epub3-wg-charter.html'>https://www.w3.org/2020/12/epub3-wg-charter.html</a>.
</p>
</dd>
<dt id="epub-a11-11" class="spec"><a href="https://www.w3.org/TR/epub-a11y-11/">EPUB Accessibility 1.1</a></dt>
<dd>
<p>
This specification specifies content conformance requirements for verifying the accessibility of EPUB® Publications. It
also specifies accessibility metadata requirements for the discoverability of EPUB publications.
</p>
<p class="draft-status">
<b>Draft state:</b> <a href="https://www.w3.org/TR/epub-a11y-11/">Recommendation.</a>
</p>
<p>
<b>Exclusion Draft:</b> <a
href='ttps://www.w3.org/TR/2023/CR-epub-a11y-11-20230221/'>ttps://www.w3.org/TR/2023/CR-epub-a11y-11-20230221/</a>.
Exclusion period <b>began</b> 2023-02-21; Exclusion period <b>ended</b> 2023-04-22.
</p>
<p>
<b>Exclusion Draft Charter:</b> <a
href='https://www.w3.org/2020/12/epub3-wg-charter.html'>https://www.w3.org/2020/12/epub3-wg-charter.html</a>.
</p>
</dd>
</dl>
</section>
<section id="wg-new-deliverables">
<h3>New Deliverables</h3>
<dl>
<dt id="epub-annotations" class="spec">EPUB 3.4 Annotations (title not final)</dt>
<dd>
<p>
This specification defines an interoperable annotation standard for EPUB, based on the W3C Web
Annotation <a href="https://www.w3.org/TR/annotation-model/">Data Model</a> and
<a href="https://www.w3.org/TR/annotation-vocab/">Vocabulary</a>, aiming at standard,
interchangeable annotations.
</p>
<p class="draft-status"><b>Draft state:</b> external document</p>
<p class="milestone"><b>Expected completion:</b> <i class="todo">[TBD+2 years]</i></p>
<p><b>Adopted Draft:</b> <a href="https://github.com/readium/annotations">Readium Annotations</a>.
<p><b>Exclusion Draft:</b> n/a</p>
<p><b>Exclusion Draft Charter:</b> n/a</p>
<p>
Note: it is undecided whether this specification will be published as a separate Recommendation, or
whether its content will be folded into EPUB 3.4.
</p>
</dd>
</dl>
</section>
<section id="wg-other-deliverables">
<h3>
Other Deliverables
</h3>
<p>
The Working Group will maintain the non-normative documents originally published by the EPUB and Publishing Working
Groups, as well as the notes published recently by the Publishing Maintenance Working Group, namely:
</p>
<ul>
<li>
<a href="https://www.w3.org/TR/epub-a11y-eaa-mapping/">EPUB Accessibility — EU
Accessibility Act Mapping</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-a11y-tech-11/">EPUB Accessibility Techniques 1.1</a>
(Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-fxl-a11y/">EPUB Fixed Layout Accessibility</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-overview-33/">EPUB 3 Overview</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-multi-rend-11/">EPUB 3 Multiple-Rendition
Publications 1.1</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-ssv-11/">EPUB 3 Structural Semantics
Vocabulary 1.1</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-tts-10/">EPUB 3 Text-to-Speech
Enhancements 1.0</a> (Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/epub-aria-authoring-11/">EPUB Type to ARIA Role Authoring Guide 1.1</a>
(Working Group Note)
</li>
<li>
<a href="https://www.w3.org/TR/lpf/">Lightweight Packaging Format</a> (Working Group Note)
</li>
<li>
<a href="https://w3c.github.io/publ-tests/">Test suites and implementation reports for the
Audiobooks and the Publication Manifest specifications</a>
</li>
<li>
<a href="https://w3c.github.io/epub-tests/">Test suites and implementation reports for the
EPUB specifications</a>
</li>
<li>
<a href="https://www.w3.org/TR/epub-a11y-exemption/">The EPUB Accessibility exemption property</a> (Working Group
Note)
</li>
</ul>
<p>The Working Group may also publish new non-normative documents.</p>
</section>
<section id="timeline">
<h3>Timeline</h3>
<ul>
<li>TBD + 1 week: First teleconference</li>
<li>TBD + 2 months: First F2F meeting</li>
<li>TBD + 6 months: FPWD for in-scope changes</li>
<li>TBD + 12 months: First CR snapshot for a new version</li>
<li>TBD + 24: EPUB 3.4 final version</li>
</ul>
</section>
</section>
<section id="success-criteria">
<h2>Success Criteria</h2>
<!-- Testing and interop -->
<p>In order to advance beyond
<a href="https://www.w3.org/policies/process/#RecsCR" title="Candidate Recommendation">Candidate Recommendation</a>, each normative specification is expected to have
<a href="https://www.w3.org/policies/process/#implementation-experience">at least two independent
interoperable
implementations</a> of every feature defined in the specification, where
interoperability can be verified by passing open test suites.
</p>
<p>There should be testing plans for each specification, starting from the earliest drafts.</p>
<p>
To promote interoperability, all changes made to specifications should have
<a href="https://www.w3.org/2019/02/testing-policy.html">tests</a>.
</p>
<!-- Horizontal review -->
<p>Each specification should contain separate sections detailing all known security and
privacy implications for implementers, Web authors, and end users.</p>
<p>
Each specification should contain a section on accessibility that describes the benefits and
impacts, including ways specification features can be used to address them, and
recommendations for maximising accessibility in implementations.</p>
<p>To ensure the real-world usability of EPUB 3.4 in the publishing ecosystem, <a href="https://www.w3.org/publishing/epubcheck/">EPUBCheck</a> must
fully support the specification at the time of its release. To facilitate this, all changes that
add, remove, or clarify publication conformance requirements must be logged.</p>
<!-- Design principles -->
<p>This Working Group expects to follow the
TAG <a href="https://www.w3.org/TR/design-principles/">Web Platform Design Principles</a>.
</p>
</section>
<section id="coordination">
<h2>Coordination</h2>
<p>For all specifications, this Working Group will seek <a
href="https://www.w3.org/Guide/documentreview/#how_to_get_horizontal_review">horizontal
review</a> for
accessibility, internationalization, privacy, and security with the relevant Working and
Interest Groups, and with the <a href="https://www.w3.org/groups/other/tag/"
title="Technical Architecture Group">TAG</a>.
Invitation for review must be issued during each major standards-track document transition,
including
<a href="https://www.w3.org/policies/process/#RecsWD" title="First Public Working Draft">FPWD</a>.
The
Working Group is encouraged to engage collaboratively with the
horizontal review groups throughout development of
each specification. The Working Group is advised to seek a review at
least 3 months before first entering
<a href="https://www.w3.org/policies/process/#RecsCR" title="Candidate Recommendation">CR</a> and is
encouraged
to proactively notify the horizontal review groups when major changes occur in a specification
following a review.
</p>
<p>
This group is expected to coordinate with the
<a href="https://www.w3.org/community/publishingcg/">Publishing Community Group</a> on consensus-based
proposals related to content changes for the Publishing Maintenance Working Group Deliverables.
The Chairs of this group should reject proposals that are incompatible with this Charter.
</p>
<p>Additional technical coordination with the following Groups will be made, per the <a
href="https://www.w3.org/policies/process/#WGCharter">W3C Process Document</a>:</p>
<section>
<h3 id="w3c-coordination">W3C Groups</h3>
<dl>
<dt><a href="https://www.w3.org/community/a11y-discov-vocab/">Accessibility Discoverability Vocabulary for
Schema.org Community Group</a></dt>
<dd>
<p>
The primary objective of this Community Group is to maintain and develop the vocabularies for the
accessibility discoverability properties in <a href="https://schema.org">schema.org</a>, that enable discovery
of accessible content.
The <a href="https://schema.org">schema.org</a> vocabulary is essential for publishing and used, for example, by
the Publication Manifest.
</p>
</dd>
<dt><a href="https://www.w3.org/WAI/GL/">Accessibility Guidelines Working Group</a></dt>
<dd>
<p>
The Accessibility Guidelines Working Group develops guidelines to make Web content
accessible for people with disabilities and is responsible for the development and
maintenance of the WCAG series of Recommendations.
The EPUB Accessibility specification is already based on WCAG, and a liaison will be
set up to ensure that any new features in EPUB 3.4, in particular EPUB Accessibility 1.1,
would continue to refer to WCAG 2.X, when applicable.
</p>
</dd>
<dt><a href="https://www.w3.org/WAI/APA/">Accessible Platform Architectures Working Group</a></dt>
<dd>
<p>
The APA WG provides horizontal review of potential accessibility issues in the architecture,
including knowledge domains for STEM accessibility; as well as accessibility impact of a
specification.
That Working Group may also develop new technologies that may impact future versions
of Digital Publishing standards, such as the specification for
<a href="https://www.w3.org/TR/spoken-html/">Spoken Presentation in HTML</a>.
</p>
</dd>
<dt><a href="https://www.w3.org/WAI/ARIA/">ARIA Working Group</a></dt>
<dd>
<p>
The ARIA Working Group is responsible for the development of ARIA and the development of
DPUB-ARIA Module 1.1.
The Publishing Maintenance Working Group will support the ARIA Working Group’s work to maintain this
specification.
</p>
</dd>
<dt><a href="https://www.w3.org/community/publishingbg/">Publishing Business Group</a></dt>
<dd>
<p>
The Publishing Business Group will provide business cases and guidance to the working group
as needed.
The PBG will also provide support for industry outreach.
</p>
</dd>
<dt><a href="https://www.w3.org/community/publishingcg/">Publishing Community Group</a></dt>
<dd>
<p>
The Publishing Community Group functions as an incubator group to explore, test, and possibly specify
new ideas that may be included, eventually, into updated versions of EPUB 3.4 Recommendations or
Working Group Notes.
</p>
</dd>
<dt><a href="https://www.w3.org/community/schemaorg/">Schema.org Community Group</a></dt>
<dd>
<p>
Synchronization on the <a href="https://schema.org">schema.org terms</a> used in the Publication
Manifest and in EPUB 3 (e.g., for accessibility).
</p>
</dd>
<dt><a href="https://www.w3.org/community/tdmrep/">Text and Data Mining Reservation Protocol Community Group</a></dt>
<dd>
<p>
The goal of this Group is to facilitate Text and Data Mining (TDM) Reservation Protocol, by
specifying a simple and practical machine-readable solution, capable of expressing the reservation of TDM rights.
Expressing these rights for an EPUB publication is an important part of the Reservation Protocol.
</p>
</dd>
<dt><a href="https://www.w3.org/AudioVideo/TT/">Timed Text Working Group</a></dt>
<dd>
<p>
The Timed Text Working Group maintains the <a href="https://www.w3.org/TR/webvtt1/">WebVTT specification</a>, which may be reused
by EPUB 3.4 as part of the incubation on synchronized media.
</p>
</dd>
</dl>
</section>
<section>
<h3 id="external-coordination">External Organizations</h3>
<dl>
<dt><a href="https://daisy.org/">DAISY Consortium</a></dt>
<dd>
<p>
The DAISY consortium currently manages <a href="https://epubtest.org/">epubtest.org</a>,
the support grid for EPUB. They also provide support on specification writing,
accessibility, and feedback on EPUB implementation.
Their feedback on the further development of EPUB in general, and EPUB Accessibility in
particular, will be essential.
</p>
</dd>
<dt><a href="https://www.edrlab.org/">EDRLab</a></dt>
<dd>
<p>
EDRLab is actively working on the different Readium projects and develops an open-source
and highly accessible desktop reading application (called
<a href="https://www.edrlab.org/software/thorium-reader/">Thorium</a>)
for EPUB 3 and Audiobooks.
</p>
</dd>
<dt>The <a href="https://github.com/w3c/epubcheck">EPUBCheck</a> Community</dt>
<dd>
<p>
<a href="https://github.com/w3c/epubcheck">EPUBCheck</a>, the EPUB validation tool, is an open
source software, currently maintained by the <a href="https://daisy.org/">DAISY
Consortium</a> on behalf of the W3C, and widely used by virtually all major publishers
around the World.
The EPUB 3 Working Group worked closely with the developers of EPUBCheck, and this cooperation
should continue with the Publishing Maintenance Working Group.
</p>
</dd>
<dt><a href="https://www.iso.org">International Standards Organization (ISO)</a></dt>
<dd>
<p>
The <a href="https://www.iso.org/committee/45020.html">ISO/IEC JTC1</a> committee has published,
and maintains, some EPUB based ISO standards.
A liaison will monitor and provide input regarding any EPUB-related
documents developed by ISO, such as the forthcoming
<a href="https://www.iso.org/standard/87780.html">EPUB/A technical standard</a>.
This liaison will become especially important in the case this Working Group decides to
submit the EPUB 3.4 Recommendations to be published as ISO/IEC standard via the PAS process.
See also the <a href="#isopas">Scope section</a> for further details.
</p>
</dd>
<dt><a href="https://readium.org/">Readium Foundation</a></dt>
<dd>
<p>
The Readium projects are at the core of a number of EPUB 3 reading systems around the world,
and they also implement the Audiobook specification.
As such, the feedback of that development will be essential to the maintenance work of these
specifications.
</p>
</dd>
</dl>
</section>
</section>
<section class="participation">
<h2 id="participation">
Participation
</h2>
<p>
To be successful, this Working Group is expected to have six or more
active participants for its duration, including representatives from the key implementors of this
specification, and active Editors and Test Leads for each specification. The Chairs, specification
Editors, and Test Leads are expected to contribute half of a working day per week towards the Working Group. There is no minimum requirement for other
Participants.
</p>
<p>
The group encourages questions, comments and issues on its public mailing lists and document
repositories, as described in <a href='#communication'>Communication</a>.
</p>
<p>
The group also welcomes non-Members to contribute technical submissions for consideration upon their
agreement to the terms of the <a href="https://www.w3.org/policies/patent-policy/">W3C Patent
Policy</a>.
</p>
<p>Participants in the group are required (by the <a
href="https://www.w3.org/policies/process/#ParticipationCriteria">W3C Process</a>) to follow the
W3C <a href="https://www.w3.org/policies/code-of-conduct/">Code of Conduct</a>.</p>
</section>
<section id="communication">
<h2>
Communication
</h2>
<p id="public">
Technical discussions for this Working Group are conducted in <a
href="https://www.w3.org/policies/process/#confidentiality-levels">public</a>: the meeting
minutes from teleconference and face-to-face meetings will be archived for public review, and
technical discussions and issue tracking will be conducted in a manner that can be both read and
written to by the general public. Working Drafts and Editor's Drafts of specifications will be
developed in public repositories and may permit direct public contribution requests.
The meetings themselves are not open to public participation, however.
</p>
<p>
Information about the group (including details about deliverables, issues, actions, status,
participants, and meetings) will be available from the <a href="https://www.w3.org/groups/wg/pm/">Working Group home page.</a>
</p>
<p>
Most Publishing Maintenance Working Group teleconferences will
focus on discussion of particular specifications and will be conducted on an as-needed basis.
</p>
<p>
This group primarily conducts its technical work on <a id="public-github"
href="https://www.w3.org/groups/wg/pm/tools">GitHub issues</a>. The public is invited to review,
discuss and contribute to this work.
</p>
<p>
The group may use a Member-confidential mailing list for administrative purposes and, at the
discretion of the Chairs and members of the group, for member-only discussions in special cases when
a participant requests such a discussion.
</p>
</section>
<section id="decisions">
<h2>
Decision Policy
</h2>
<p>
This group will seek to make decisions through consensus and due process, per the <a
href="https://www.w3.org/policies/process/#Consensus">W3C Process Document (section 5.2.1,
Consensus)</a>. Typically, an editor or other participant makes an initial proposal, which is
then refined in discussion with members of the group and other reviewers, and consensus emerges with
little formal voting being required.</p>
<p>
However, if a decision is necessary for timely progress and consensus is not achieved after careful
consideration of the range of views presented, the Chairs may call for a group vote and record a
decision along with any objections.
</p>
<p>
To afford asynchronous decisions and organizational deliberation, any resolution (including
publication decisions) taken in a face-to-face meeting or teleconference will be considered
provisional.
A call for consensus (CfC) will be issued for all resolutions (for example, via email, GitHub issue
or web-based survey), with a response period from 5 to 10 working days, depending on the chair's evaluation of the
group consensus on the issue.
If no objections are raised by the end of the response period, the resolution will be considered to
have consensus as a resolution of the Working Group.
</p>
<p>
All decisions made by the group should be considered resolved unless and until new information
becomes available or unless reopened at the discretion of the Chairs.
</p>
<p>
This charter is written in accordance with the <a
href="https://www.w3.org/policies/process/#Votes">W3C Process Document (Section 5.2.3, Deciding
by Vote)</a> and includes no voting procedures beyond what the Process Document requires.
</p>
</section>
<section id="patentpolicy">
<h2>
Patent Policy
</h2>
<p>
This Working Group operates under the <a href="https://www.w3.org/policies/patent-policy/">W3C
Patent Policy</a> (Version of 15 September 2020). To promote the widest adoption of Web
standards, W3C seeks to issue Web specifications that can be implemented, according to this policy,
on a Royalty-Free basis.
For more information about disclosure obligations for this group, please see the <a
href="https://www.w3.org/groups/wg/pm/ipr/">licensing information</a>.
</p>
</section>
<section id="licensing">
<h2>Licensing</h2>
<p>This Working Group will use the <a
href="https://www.w3.org/copyright/software-license/">W3C Software and Document license</a> for
all its deliverables.</p>
</section>
<section id="about">
<h2>
About this Charter
</h2>
<p>
This charter has been created according to <a
href="https://www.w3.org/policies/process/#GAGeneral">section 3.4</a> of the <a
href="https://www.w3.org/policies/process/">Process Document</a>. In the event of a conflict
between this document or the provisions of any charter and the W3C Process, the W3C Process shall
take precedence.
</p>
<section id="history">
<h3>
Charter History
</h3>
<p>The following table lists details of all changes from the initial charter, per the <a
href="https://www.w3.org/policies/process/#CharterReview">W3C Process Document (section 4.3,
Advisory Committee Review of a Charter)</a>:</p>
<table class="history">
<thead>
<tr>
<th>Charter Period</th>
<th>Start Date</th>
<th>End Date</th>
<th>Changes</th>
</tr>
</thead>
<tbody>
<tr>
<th>
<a href="https://www.w3.org/2023/06/pmwg-charter.html">Initial Charter</a>
</th>
<td>
2023-06-20
</td>
<td>
2023-06-30
</td>
<td>
</td>
</tr>
<tr>
<th>
<a href="https://lists.w3.org/Archives/Member/w3c-ac-members/2023OctDec/0008.html">Dave Cramer
stepping down as co-chair</a>
</th>
<td>
2023-10-05
</td>
<td>
</td>
<td>