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<h1>Protocols and Formats Working Group (<acronym>PFWG</acronym>) Public
Page</h1> <div id="contents">
<h2>Page Contents</h2>
<ul>
<li><a href="#announcements" shape="rect">Announcements and
Meetings</a></li>
<li><a href="#current" shape="rect">Current Work</a></li>
<li><a href="#pubs" shape="rect">Publications</a></li>
<li><a href="#about" shape="rect">About the PFWG</a></li>
</ul>
<!-- end (page) contents (list)-->
</div> <h2><a name="announcements" id="announcements" shape="rect"
></a>Announcements and Meetings</h2> <p>3 January 2012: Published <a
href="http://www.w3.org/TR/2012/WD-media-accessibility-reqs-20120103/"
>Media Accessibility User Requirements</a> First Public Working Draft.
Please <a href="http://www.w3.org/WAI/PF/comments/instructions"
shape="rect">comment</a> by 10 February 2012.</p> <p>18 January 2011:
Published <a href="http://www.w3.org/TR/2011/CR-wai-aria-20110118/"
shape="rect">WAI-ARIA 1.0 Candidate Recommendation</a>. Read the <a
href="http://www.w3.org/QA/2011/01/wai-aria-cr.html" shape="rect">WAI-ARIA
publication announcement</a>. Please <a
href="http://www.w3.org/WAI/PF/comments/instructions" shape="rect"
>comment</a> by 25 February 2011.</p> <p>13 January 2011: Published <a
href="http://www.w3.org/TR/2011/WD-role-attribute-20110113/" shape="rect"
>Last Call Working Draft of Role Attribute 1.0</a>. Please <a
href="http://www.w3.org/WAI/PF/comments/instructions" shape="rect"
>comment</a> by 25 February 2011.</p> <p><a href="Group/meetings/f2fmar12"
>Face to face meeting 5 - 7 March 2012 in Austin, TX</a></p> <h2><a
name="current" id="current" shape="rect">Current Work</a></h2> <h3><a
name="review" id="review" shape="rect"></a>Public Working Drafts under
review</h3> <p>The Protocols and Formats Working Group invites public
comment on the 3 January 2012 Working Draft of <a
href="http://www.w3.org/TR/2012/WD-media-accessibility-reqs-20120103/"
>Media Accessibility User Requirements</a>. Follow the <a
href="http://www.w3.org/WAI/PF/comments/instructions" shape="rect"
>instructions for commenting</a> page to submit comments. <a
href="http://www.w3.org/WAI/PF/comments/submit?document_version_id=6"
shape="rect">Submit comments online</a> (preferred) or by email to to <a
href="mailto:public-pfwg-comments@w3.org" shape="rect"
>public-pfwg-comments@w3.org</a> (<a
href="http://lists.w3.org/Archives/Public/public-pfwg-comments/"
title="PFWG public comments list archive" shape="rect">Archive</a>).
Comments should be made by <strong>25 February 2011</strong>.</p> <h3><a
name="specreview" id="specreview" shape="rect"></a>Technology Review</h3>
<p>W3C invites public comment on the <a
href="http://www.w3.org/TR/tr-status-all.html#tr_LCWD" shape="rect"
>Working Drafts in Last Call</a>. The WAI and the Protocols and Formats
Working Group invite anyone who perceives an access problem with these
drafts to comment. Submit your comments as directed in the individual
drafts; the email addresses vary from document to document.</p><h3>
Technical Specifications</h3> <p>Please note that Editors' Drafts:</p> <ul>
<li> May not be up-to-date with recent Working Group decisions</li>
<li> Do not necessarily represent Working Group consensus, that is, the
drafts may include proposals that the Working Group has not agreed
on</li>
<li> May change frequently without public notification </li>
<li> Include "Editorial notes" that are intended for public review and
comment </li>
<li> Include internal "Todo" notes and areas that are not ready for review
</li>
</ul> <p>Edits to documents are posted regularly to the publicly visible
editors' draft. People interested in following the work can subscribe to
the public-pfwg-cvs mailing list to receive notification when changes are
checked in. Techniques and examples of how to apply these technologies to
create rich internet applications are discussed on the <a
href="http://lists.w3.org/Archives/Public/wai-xtech/latest" shape="rect"
>wai-xtech</a> mailing list. See <a href="#participation" shape="rect"
>participation</a> for how to follow or get involved in this work.</p>
<h4><a name="aria" id="aria" shape="rect"></a>Accessible Rich Internet
Applications (WAI-ARIA)</h4><p>WAI-ARIA, the Accessible Rich Internet
Applications Suite, defines a way to make Web content and Web applications
more accessible to people with disabilities. It especially helps with
dynamic content and advanced user interface controls developed with Ajax,
HTML, JavaScript, and related technologies.</p> <p>The work has been
divided into five documents. The current editor's working drafts of these
are: </p> <dl>
<dt><a href="aria-roadmap/" shape="rect">Roadmap for Accessible Rich
Internet Applications (WAI-ARIA Roadmap) (public editor's draft)
</a></dt>
<dd>This roadmap that describes the problem, what W3C specifications will
be used to correct the problem, and the timeline for the new
specifications. See also the <a href="/TR/wai-aria-roadmap/"
shape="rect">Public Working Draft of the WAI-ARIA Roadmap</a>. </dd>
<dt><a href="aria/" shape="rect">Accessible Rich Internet Applications
(WAI-ARIA) (public editor's draft) </a><a
href="http://www.w3.org/WAI/PF/GUI/" shape="rect"></a></dt>
<dd>This specification provides an ontology of roles, states, and
properties that set out an abstract model for accessible interfaces and
can be used to improve the accessibility and interoperability of Web
Content and Applications. This information can be mapped to
accessibility frameworks that use this information to provide
alternative access solutions. Similarly, this information can be used to
change the rendering of content dynamically using different style sheet
properties. The result is an interoperable method for associating
behaviors with document-level markup. See also the <a
href="/TR/wai-aria/" shape="rect">Public version of WAI-ARIA</a>.</dd>
<dt><a href="aria-primer/" shape="rect">WAI-ARIA Primer (public editor's
draft) </a></dt>
<dd>Explains the accessibility problems posed by hybrid technologies such
as DHTML and AJAX and introduces the technologies to map controls, AJAX
live regions, and events to accessibility APIs. Also describes new
navigation techniques to mark common Web elements such as menus, primary
content, secondary content, banner information and other types of Web
structures. See also the <a href="/TR/wai-aria-primer/" shape="rect"
>Public Working Draft of the WAI-ARIA Primer </a>.</dd>
<dt><a href="aria-practices/" shape="rect">WAI-ARIA Authoring Practices
(public editor's draft) </a></dt>
<dd>Provides recommended approaches to create accessible Web content using
WAI-ARIA roles, states, and properties to make widgets, navigation, and
behaviors accessible. Also describes considerations that might not be
evident to most implementors from the WAI-ARIA specification alone. See
also the <a href="/TR/wai-aria-practices/" shape="rect">Public Working
Draft of the WAI-ARIA Authoring Practices</a>.</dd>
<dt><a href="aria-implementation/" shape="rect">WAI-ARIA User Agent
Implementation Guide (public editor's draft)</a></dt>
<dd>Describes how user agents should map WAI-ARIA features to platform
accessibility APIs. See also the <a href="/TR/wai-aria-implementation/"
shape="rect">Public Working Draft of the WAI-ARIA User Agent
Implementation Guide</a>.</dd>
</dl> <p>Formal Public Working Drafts of these documents can be found from
the <a href="/WAI/intro/aria" shape="rect">WAI-ARIA Overview Page</a>.
</p> <h4><a name="role-attribute" id="role-attribute" shape="rect"
></a>Role Attribute</h4> <p>The <a href="role-attribute/" shape="rect"
>Role Attribute (public editor's draft)</a> allows the author to annotate
markup languages with machine-extractable semantic information about the
purpose of an element. Use cases include accessibility, device adaptation,
server-side processing, and complex data description. This attribute can
be integrated into any markup language. The role attribute is necessary to
support WAI-ARIA to define roles in XML-based languages, when the
languages do not define their own role attribute. See also the <a
href="/TR/role-attribute/" shape="rect">Public Working Draft of the Role
Attribute</a>.</p> <h4><a name="media-a11y-reqs" id="media-a11y-reqs"
shape="rect"></a>Media Accessibility User Requirements</h4> <p><a
href="media-a11y-reqs/" shape="rect">Media Accessibility User Requiremenst
(public editors' draft)</a> aggregates the requirements of an
accessibility user that the W3C HTML5 Accessibility Task Force has
collected with respect to audio and video on the Web. See also the <a
href="http://www.w3.org/TR/media-accessibility-reqs/">Public Working Draft
of Media Accessibility User Requirements</a>.</p> <h3><a name="taskforces"
id="taskforces" shape="rect"></a>Task Forces</h3> <h4><a name="tf-aria"
id="tf-aria" shape="rect"></a>WAI-ARIA Task Force</h4> <p>This task force
develops the WAI-ARIA technology. Currently we are processing comments
received on the latest ARIA Working Draft. ARIA issues are tracked in the
<a href="comments/" shape="rect">PFWG public comments tracker</a>. The <a
href="#aria" shape="rect">section on WAI-ARIA</a> has further information
about how to follow this work.</p> <h4><a name="tf-aria-uaig"
id="tf-aria-uaig" shape="rect"></a>WAI-ARIA User Agent Implementation Task
Force</h4> <p>The publicly visible <a href="/WAI/PF/aria-ua-task-force"
shape="rect">User Agent Implementation Task Force</a> is a joint task
force of the PFWG and the <a href="http://www.w3.org/html/wg/"
shape="rect">HTML Working Group (HTML WG)</a>. The objective of UAI TF is
to develop guidelines for interoperable user agent implementation of the
WAI-ARIA specification. Discussion and meeting information is posted to
the WAI-XTech mailing list with the subject prefix "aapi". The <a
href="#aria" shape="rect">section on WAI-ARIA</a> has further information
about how to follow this work.</p> <h4><a name="tf-html-a11y"
id="tf-html-a11y" shape="rect"></a>HTML Accessibility Task Force</h4>
<p>The <a href="/WAI/PF/html-task-force" shape="rect">HTML Accessibility
Task Force</a> is a joint task force of the PFWG and the <a
href="http://www.w3.org/html/wg/" shape="rect">HTML Working Group (HTML
WG)</a>. The objective of this task force is to review accessibility
considerations for HTML 5. The work of this task force is mainly tracked
in the <a href="http://www.w3.org/WAI/PF/HTML/wiki/" shape="rect">HTML
Accessibility Task Force wiki</a>. The task force currently has a number
of sub-groups focusing on <a
href="http://www.w3.org/WAI/PF/HTML/wiki/Media_Sub-Group" shape="rect"
>media</a>, <a href="http://www.w3.org/WAI/PF/HTML/wiki/Canvas"
shape="rect">canvas</a>, <a
href="http://www.w3.org/WAI/PF/HTML/wiki/ARIA_Integration" shape="rect"
>ARIA integration</a>, and <a
href="http://www.w3.org/WAI/PF/HTML/wiki/Bug_Triage" shape="rect">bug
triage</a>.</p> <h4>Specification Accessibility Task Force</h4> <p><a
name="tf-spec-review" id="tf-spec-review" shape="rect"></a>The <a
href="/WAI/PF/Group/spec-review-tf" shape="rect">Specification
Accessibility Task Force</a> assists the Working Group with accessibility
review of W3C specifications. Currently this work is done by the working
group as a whole.</p> <h2><a id="pubs" name="pubs" shape="rect"
>Publications</a></h2> <p>In addition to the <a href="#aria" shape="rect"
>WAI-ARIA documents</a> and the Role Attribute, the PFWG has been
responsible in the past for the incorporation of a number of the
accessibility improvements introduced into W3C formats from HTML 4.0
onward including CSS, SMIL, SVG and VoiceXML. Some specific publications
developed in service of this work:</p> <dl>
<dt><a href="http://www.w3.org/TR/turingtest" shape="rect">Inaccessibility
of Visually-Oriented Anti-Robot Tests: Problems and
Alternatives</a></dt>
<dd>This paper evaluates the accessibility problems with <a
href="http://www.captcha.net/" shape="rect"><acronym
title="Completely Automated Public Turing test to tell Computers and Humans Apart"
>CAPTCHA</acronym></a>, a visual verification system popular on many Web
sites, and evaluates a number of more-accessible alternatives to the
same problems CAPTCHA claims to solve.</dd>
<dt><a href="http://www.w3.org/WAI/PF/natural-lang-20030326.html"
shape="rect">Natural Language Usage -- Issues and Strategies for
Universal Access to Information</a></dt>
<dd>This paper suggests a possible implementation of a language annotation
system to clarify meaning in potentially ambiguous terms.</dd>
<dt><a href="http://www.w3.org/WAI/PF/XML/about" shape="rect">XML
Accessibility Guidelines</a></dt>
<dd>The discussions for XAG take place on the public <a
href="http://lists.w3.org/Archives/Public/wai-xtech/" shape="rect"
>wai-xtech list</a>. This specification is developed by the Working
Group.</dd>
</dl> Some of these are are discussed in the following education notes: <ul>
<li><a href="/WAI/References/HTML4-access" shape="rect">HTML4
accessibility improvements</a></li>
<li><a href="/WAI/EO/NOTE-css-access-19990309" shape="rect">CSS2
accessibility improvements</a></li>
<li><a href="/WAI/EO/SMIL-access.html" shape="rect">SMIL accessibility
improvements</a></li>
<li><a href="/TR/SVG-access/" shape="rect">SVG accessibility Note</a></li>
</ul> <h2><a id="about" name="about" shape="rect">About the PFWG</a></h2>
<h3><a name="contacts" id="contacts" shape="rect"></a>Contacts</h3> <ul>
<li>PFWG Chair: Janina Sajka <<a href="mailto:janina@rednote.net"
shape="rect">janina@rednote.net</a>></li>
<li>PFWG W3C Staff Contact: Michael Cooper <<a
href="mailto:cooper@w3.org" shape="rect">cooper@w3.org</a>></li>
</ul> <h3><a name="activities" id="activities" shape="rect"
></a>Activities</h3> <p>The PFWG looks at the formal Web technologies
(protocols, formats, etc.) from an accessibility perspective. Best
practices for using these technologies are addressed by <a
href="#wai-groups" shape="rect">other WAI groups</a>, producing guidelines
explaining how to use the technologies.</p> <p>The principal output of
this working group is feedback to other W3C working groups developing
specification, on how to ensure that their work can allow for
accessibility. This does not generally create deliverables in the form of
W3C publications.</p> <p>In particular, the group tries to review at least
every <a href="/TR/#last-call" shape="rect">Last Call working
draft</a>.</p> <p>The PFWG also works on the <a href="/TR/xag"
shape="rect">XML Accessibility Guidelines (XAG)</a>.</p> <h3><a
name="charter" id="charter" shape="rect"></a>Charter</h3> <p>The <a
href="charter201006" shape="rect">charter of the working group</a>
outlines the goals, work methods, and requirements for participation. It
also explains why the working drafts and email archives of this group are
in the <a href="Group/" shape="rect">members-only</a> area. This activity
is conducted by the <a href="/" shape="rect">W3C</a> as part of its <a
href="/WAI/" shape="rect">Web Accessibility Initiative</a></p> <h3><a
name="participation" id="participation" shape="rect"
></a>Participation</h3> <p>The participation page provides details about
<a href="participation" shape="rect">how to join the group</a>. </p> <p>To
follow the work of the WG without joining, the following resources are
available:</p> <ul>
<li>Subscribe to public <a href="#lists" shape="rect">mailing
lists</a>;</li>
<li>Review formal and editors' drafts of <a href="#aria" shape="rect"
>publications</a>;</li>
<li>Submit <a href="comments/" shape="rect">public comments</a> on current
work and review existing comments;</li>
<li>Join <a href="#taskforces" shape="rect">task forces</a> where
participation requirements allow.</li>
</ul> <h3><a name="lists" id="lists" shape="rect"></a>Mailing Lists</h3> <ul>
<li><a href="http://lists.w3.org/Archives/Public/wai-xtech/" shape="rect"
>wai-xtech@w3.org</a> is a public list for discussion of items within
PFWG's scope, where W3C Member-confidentiality is not required;</li>
<li>public-pfwg-cvs@w3.org is a public non-archived announcement list to
alert followers when edits to documents are committed;</li>
<li><a href="http://lists.w3.org/Archives/Member/w3c-wai-pf" shape="rect"
>w3c-wai-pf@w3.org</a> is a W3C member-confidential list for working
group business, and for discussions of PFWG work where
Member-confidentiality is required.</li>
</ul> <p>Anyone can join the wai-xtech and public-pfwg-cvs mailing lists.
Follow Instructions for <a href="participation.html#mail" shape="rect"
>subscribing to the PFWG mailing lists</a>; in short, send email to <a
href="mailto:wai-pf-call@w3.org?Subject=Request%20to%20join%20PF%20mailing%20list"
shape="rect">wai-pf-call@w3.org</a> indicating which list you would like
to join.</p> <h3><a id="neighborhood" name="neighborhood" shape="rect"
>Some areas of related work</a></h3> <h4><a id="protols-formats"
name="protols-formats" shape="rect">Protocols and Formats</a></h4> <p>On
the growing edge of the Web we find Protocols and Formats such as:</p> <ul>
<li>The <a href="/XML/" shape="rect">Extensible Markup Language (XML)</a>
provides for continuous enhancement of the hypertext medium.</li>
<li>The <a href="/Graphics/" shape="rect">Scalable Vector Graphics
(SVG)</a> which introduces symbolic representation of graphics.</li>
<li>The <a href="/Metadata/" shape="rect">Resource Description Framework
(RDF)</a> introduces knowledge about resources to the Web.</li>
<li>The <a href="/AudioVideo/" shape="rect">Synchronized Multimedia
Integration Language (SMIL)</a> offers a means to exchange multimedia
content across the breadth of the Web.</li>
<li>The <a href="/DOM/" shape="rect">Document Object Model (DOM)</a>
offers a neutral API for accessing the document tree.</li>
</ul> <h4><a id="wai-groups" name="wai-groups" shape="rect">Other WAI
Groups</a></h4> <p>Most accessibility issues involve cooperative work
between the PFWG and its sister groups within the WAI, particularly</p> <ul>
<li><a href="/WAI/ER/" shape="rect">Evaluation and Repair Tools (ERT)</a>
which deals with assessing and correcting accessibility in Web
pages</li>
<li><a href="/WAI/GL/" shape="rect">Web Content Accessibility Guidelines
(WCAG)</a> on the use of document formats to build resource webs of
universal accessibility.</li>
<li><a href="/WAI/UA/" shape="rect">User Agent Accessibility Guidelines
(UAAG)</a> analyzes user interface dialogs and requirements, and what
browsers and access agents that form part of the adapted client can do
to optimize access.</li>
<li><a href="/WAI/AU/" shape="rect">Authoring Tools Accessibility
Guidelines (ATAG)</a> deals with the automation of accessible resource
development and the accessibility of resource development
automation.</li>
<li><a href="/WAI/AU/" shape="rect">Education and Outreach (EOWG)</a>
carries the message to various segments of the Web community.</li>
</ul> <h3><a name="patent" id="patent" shape="rect"></a>Patent Disclosures
</h3> <p>W3C maintains a <a rel="disclosure"
href="http://www.w3.org/2004/01/pp-impl/32212/status" shape="rect">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.</p> <p>Janina Sajka <<a
href="mailto:janina@rednote.net" shape="rect">janina@rednote.net</a>> -
Chair, PFWG <br clear="none" /> Michael Cooper <<a
href="mailto:cooper@w3.org" shape="rect">cooper@w3.org</a>> - Staff
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