# XHTML™ Modularization 1.1 - Second Edition

## W3C Editor's Draft 18 November 2009

This version:
  http://www.w3.org/TR/2009/ED-xhtml-modularization-20091118
Latest version:
  http://www.w3.org/TR/xhtml-modularization
Previous version:
  http://www.w3.org/TR/2008/REC-xhtml-modularization-20081008
Diff-marked version:
  xhtml-modularization-diff.html
Version 1.1 Second Edition Editors:
  Shane McCarron, Applied Testing and Technology, Inc.
Version 1.1 Editors:
  Daniel Austin, Sun Microsystems
  Subramanian Peruvemba, Oracle Corporation
  Shane McCarron, Applied Testing and Technology, Inc.
  Masayasu Ishikawa, W3C
  Mark Birbeck, webBackplane mark.birbeck@webBackplane.com
Version 1.0 Editors:
  Murray Altheim, Sun Microsystems
  Frank Boumphrey, HTML Writers Guild
  Sam Dooley, IBM
  Shane McCarron, Applied Testing and Technology
  Sebastian Schnitzenbaumer, Mozquito Technologies AG
  Ted Wugofski, Openwave (formerly Gateway)

Please refer to the errata for this document, which may include some normative corrections.

This document is also available in these non-normative formats: Single HTML file, PostScript version, PDF version, ZIP archive, or Gzip'd TAR archive.

See also translations.

Copyright ©2001-2009 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C liability, trademark and document use rules apply.

## Abstract

This document is the second edition of version 1.1 of XHTML Modularization, an abstract modularization of XHTML and implementations of the abstraction using XML Document Type Definitions (DTDs) and XML Schemas. This modularization provides a means for subsetting and extending XHTML, a feature needed for extending XHTML's reach onto emerging platforms. This specification is intended for use by language designers as they construct new XHTML Family Markup Languages. This specification does not define the semantics of elements and attributes, only how those elements and attributes are assembled into modules, and from those modules into markup languages. This update includes several minor updates to provide clarifications and address errors found in version 1.1.

## Status of This Document

This document is a W3C Proposed Edited Recommendation. If approved, it will supersede the previous edition of XHTML Modularization 1.1. It reflects minor corrections to ensure consistency among various markup languages that rely upon XHTML Modularization. Most significant among these are:

1. Changing the datatype of the `class` attribute so that it permits an empty value - historically the class attribute was permitted to be empty.
2. Moving the `name` attribute for the `form` and img elements out of the legacy module and into their base modules - this attribute is required for some scripting constructs.
3. Changing the datatype for the `usemap` attribute from `IDREF` to `URIREF` - most user agents require that map references be relative URIs that are local to the document.

A version that shows the specific changes from that Recommendation is available in diff-marked form. A disposition of comments document is also available.

Publication as a Proposed Edited Recommendation does not imply endorsement by the W3C 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.

W3C Advisory Committee Members are invited to send formal review comments on this Proposed Edited Recommendation to the W3C Team until @@@@SOME DATE@@@@. Members of the W3C Advisory Committee will find the appropriate review form for this document by consulting their list of current WBS questionnaires.

This document has been produced by the W3C XHTML 2 Working Group as part of the HTML Activity. The goals of the XHTML 2 Working Group are discussed in the XHTML 2 Working Group charter.

This document was produced by a group operating under the 5 February 2004 W3C Patent Policy. W3C maintains a public list of any patent disclosures 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 Essential Claim(s) must disclose the information in accordance with section 6 of the W3C Patent Policy.

# Quick Table of Contents

# Full Table of Contents