Hypertext Coordination Group Charter

The mission of the Hypertext Coordination Group, part of the HTML Activity, is to coordinate the work of W3C Working Groups dealing with user-facing technologies, primarily from the Interaction and Ubiquitous Web Domains.

End date 31 January 2011
Confidentiality Proceedings are Member-only
Initial Chairs Chris Lilley, Deborah Dahl
Initial Team Contacts
(FTE %: 15)
Chris Lilley
Usual Meeting Schedule Teleconferences: Every two weeks
Face-to-face: Usually no ftf meetings


The purpose of this group is to identify technical areas where different working groups may overlap, encourage discussion, and to coordinate their work. This includes liaison with other organizations.

The group is also the forum where logistics and procedure issues of common interest can be discussed and coordinated. Such issues include:

When appropriate, the Coordination Group may appoint a task force to address a technical issue that impacts several groups. Members of such tasks forces are proposed by the relevant groups and confirmed by the HCG chairs.


The Hypertext Coordination Group may from time to time publish Coordination group Notes on topic where it is helpful to document consensus of some area touching several of the coordinated groups.


W3C Groups

The initial set of coordinated groups is listed here; any changes to this list will be documented on the Hypertext Coordination Group home page.

Compound Document Formats (CDF) Working Group
The mission of the Compound Document Formats Working Group is to develop specifications which combine selected existing document formats from the W3C and elsewhere, and which specify the runtime behavior of such combined documents.
Cascading Style Sheets (CSS) Working Group
The CSS Working Group is developing CSS2.1, and a modular CSS3.
Device Independence Working Group
The mission of this Working Group is to study issues related to authoring, adaptation and presentation of Web content and applications that can be delivered effectively through different access mechanisms.
HTML Working Group
This working group maintains the various HTML specifications, and maintains and develops the XHTML1.x family.
Internationalization (I18N) Core Working Group
The goal of the I18N Core WG is to propose and coordinate any techniques, conventions, guidelines and activities within W3C that can help to make and keep the Web international. A large part of the I18N WG work consists in reviewing specifications developed by other groups.
Math Working Group
Following the MathML 2.0 Recommendation, the Math Working Group continues the task of facilitating the use of mathematical formalism on the Web, both for scientific documentation and for education.
Mobile Web Best Practices Working Group
The W3C Members chartered the Mobile Web Best Practices Working Group as part of the Mobile Web Initiative, to make it possible to provide an appropriate user experience on mobile devices.
Multimodal Interaction Working Group
The Multimodal Interaction working group is tasked with the development of a suite of specifications that together cover all necessary aspects of multimodal interaction with the Web. This work builds on top of W3C's existing specifications.
MWI Device Description Working Group (DDWG)
The objective of the Mobile Web Initiative is to enable access to the Web from mobile devices. It is envisaged that this will typically require adaptation of Web content, which relies on device knowledge.
Scalable Vector Graphics (SVG) Working Group
The working group is chartered to produce a specification for an SVG format, written as a modular XML tagset and usable as an XML namespace, which can be widely implemented in browsers and authoring tools and which is suitable for widespread adoption by the content authoring community as a replacement for many current uses of raster graphics.
Synchronized Multimedia (SYMM) Working Group
The SYMM Working Group is chartered to continue W3C's work on synchronized multimedia that started with SMIL 1.0. The language and the model should be reusable as a component in other XML-based languages and documents that require timing.
Timed Text Working Group
The Timed Text WG (TTWG) is primarily working on an XML Vocabulary for subtitling, captioning, and other applications where it is necessary to present primarily textual information with explicit timed presentation. The Distribution Format Exchange Profile (DFXP) is a format that may be used as a native distribution format. Furthermore, it is explicitly designed to be able to translate (transcode) into a number of existing distribution formats.
Voice Browser Working Group
This Working Group have the mission to prepare and review documents related to Voice Browsers, for instance, relating to dialog management, extensions to existing Web standards, speech grammar formats and authoring guidelines. It serves also as a coordination body with existing industry groups
Web Application Formats (WAF) Working Group
The W3C Web Application Formats Working Group is chartered to develop languages for client-side Web Application development.
Web API Working Group
The W3C Web API Working Group is chartered to develop standard APIs for client-side Web Application development. This work will include both documenting existing APIs such as XMLHttpRequest and developing new APIs in order to enable richer Web Applications.
WebCGM Working Group
The WebCGM Working group develops WebCGM2.0, a graphical format for technical illustration; this work is done in coordination with OASIS.
Web Security Context Working Group
This group will liaise with other coordinated groups to ensure that Security issues are considered.
XForms Working Group
The XForms Working Group is chartered to develop W3C specifications for the next generation of Web forms The key idea is to separate the user interface and presentation from the data model and logic, allowing the same form to be used on a wide variety of devices such as voice browsers, handhelds, desktops and even paper; while also being backwards compatible with classic HTML forms.
XHTML2 Working Group
This working group develops XHTML2, which combines XForms, XML Events, richer metadata and improved accessibility with elements developed from XHTML1. XHTML2 is the basis of the Device Independent Authoring Language (DIAL).

In addition, the XML Coordination Group and the Web Accessibility Initiative (WAI) Coordination Group maintain liaison with this Coordination Group through the participation of their chairs.

External Groups

The Third Generation Partnership Project
Advanced Television Systems Committee
The International Organization for Standards.
The Organization for the Advancement of Structured Information Standards
The Open Mobile Alliance participates in the Hypertext Coordination Group through a designated representative. W3C and OMA exchange liaison statements via the Hypertext Coordination Group mailing list.


Hypertext CG participants are the chairs of the coordinated groups plus the chairs of other W3C groups that maintain a liaison status with the Hypertext CG. Each Chair or liaison may nominate an alternate representative. The Co-Chairs of the Coordination Group are Debbie Dahl and Chris Lilley.

The list of participants is maintained on the group home page.


This group primarily conducts its work on the Member-only mailing list w3c-html-cg@w3.org (archive). It also holds a bi-weekly teleconference.

Public lists may be created to solicit feedback on specific technical issues.

Information about the group (deliverables, participants, teleconferences, etc.) is available from the Hypertext Coordination Group home page.

Decision Policy

As explained in the Process Document (section 3.3), this group will seek to make decisions when there is consensus. When the Co-chair put a question and observe dissent, after due consideration of different opinions, the Co-Chairs should record a decision (possibly after a formal vote) around any objections, and move on.

This charter is written in accordance with Section 3.4, Votes of the W3C Process Document and includes no voting procedures beyond what the Process Document requires.

Patent Disclosures

W3C reminds Coordination Group participants of their obligation to comply with patent disclosure obligations as set out in Section 6 of the W3C Patent Policy. While the Coordination Group does not produce Recommendation-track documents, when Coordination Group participants review Recommendation-track specifications from Working Groups, the patent disclosure obligations do apply.

About this Charter

This charter for the Hypertext Coordination Group has been created according to section 6.3 of the Process Document. 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.

Charter update history:

Please also see the previous charter for this group.

Chris Lilley, Debbie Dahl

$Date: 2010/02/12 17:28:18 $