XHTML™ Modularization 1.1

This document is 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 second version of this specification includes several minor updates to provide clarifications and address errors found in the first version. It also provides an implementation using XML Schemas.

Status of This Document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at http://www.w3.org/TR/.

This is a Proposed Recommendation of "XHTML Modularization 1.1". It reflects changes arising from comments during the Last Call period. A "Disposition of Comments" report is available at http://www.w3.org/MarkUp/2008/xhtml-modularization-lc-doc-20080221.html. An implementation report is available at http://www.w3.org/MarkUp/2008/xhtml-m12n-11-implementation.html. This specification is considered stable by the XHTML2 Working Group. W3C Advisory Committee Representatives are invited to submit their formal review per the instructions in the Call for Review (see Advisory Committee questionnaires). The review period ends on 15 July 2008. Members of the public are also invited to send comments on this Proposed Recommendation to www-html-editor@w3.org (archive). It is inappropriate to send discussion email to this address. Public discussion may take place on www-html@w3.org (archive).

Publication as a Proposed 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.

The Working Group invites implementation feedback during this period. Since this specification represents an incremental improvement to its predecessor, and since there is already substantial implementation experience, we expect to have adequate validation before the end of the Proposed Recommendation review period. While we welcome implementation experience reports, the XHTML2 Working Group will not allow early implementation to constrain its ability to make changes to this specification prior to final release.

Quick Table of Contents

1. Introduction
2. Terms and Definitions
3. Conformance Definition
4. Defining Abstract Modules
5. XHTML Abstract Modules
A. Building Schema Modules
B. Developing Schema with defined and extended modules
C. XHTML Schema Module Implementations
D. Building DTD Modules
E. Developing DTDs with defined and extended modules
F. XHTML DTD Module Implementations
G. References
H. Design Goals
J. Acknowledgements
I. Changes from XHTML Modularization 1.0

Full Table of Contents

1. Introduction
- 1.1. What is XHTML?
- 1.2. What is XHTML Modularization?
- 1.3. Why Modularize XHTML?
  - 1.3.1. Abstract modules
  - 1.3.2. Module implementations
  - 1.3.3. Hybrid document types
  - 1.3.4. Validation
  - 1.3.5. Formatting Model
2. Terms and Definitions
3. Conformance Definition
- 3.1. XHTML Host Language Document Type Conformance
- 3.2. XHTML Integration Set Document Type Conformance
- 3.3. XHTML Family Module Conformance
- 3.4. XHTML Family Document Conformance
- 3.5. XHTML Family User Agent Conformance
- 3.6. Naming Rules
- 3.7. XHTML Module Evolution
4. Defining Abstract Modules
- 4.1. Syntactic Conventions
- 4.2. Content Types
- 4.3. Attribute Types
- 4.4. An Example Abstract Module Definition
  - 4.4.1. XHTML Skiing Module
5. XHTML Abstract Modules
- 5.1. Attribute Collections
- 5.2. Core Modules
  - 5.2.1. Structure Module
  - 5.2.2. Text Module
  - 5.2.3. Hypertext Module
  - 5.2.4. List Module
- 5.3. Applet Module
- 5.4. Text Extension Modules
  - 5.4.1. Presentation Module
  - 5.4.2. Edit Module
  - 5.4.3. Bi-directional Text Module
- 5.5. Forms Modules
  - 5.5.1. Basic Forms Module
  - 5.5.2. Forms Module
- 5.6. Table Modules
  - 5.6.1. Basic Tables Module
  - 5.6.2. Tables Module
- 5.7. Image Module
- 5.8. Client-side Image Map Module
- 5.9. Server-side Image Map Module
- 5.10. Object Module
- 5.11. Frames Module
- 5.12. Target Module
- 5.13. Iframe Module
- 5.14. Intrinsic Events Module
- 5.15. Metainformation Module
- 5.16. Scripting Module
- 5.17. Style Sheet Module
- 5.18. Style Attribute Module
- 5.19. Link Module
- 5.20. Base Module
- 5.21. Name Identification Module
- 5.22. Legacy Module
A. Building Schema Modules
- A.1. Named Content Models
- A.2. Defining the Namespace of a Module
  - A.2.1. Global and Local Element Declarations
  - A.2.2. Global and Local Attribute Declarations
- A.3. Importing External Namespace Schema Components
- A.4. Datatype Definitions and Namespaces
- A.5. Content Model Redefinitions
B. Developing Schema with defined and extended modules
- B.1. Defining additional attributes
- B.2. Defining additional elements
- B.3. Defining the content model for a collection of modules
  - B.3.1. Integrating a stand-alone module into XHTML
  - B.3.2. Mixing a new module throughout the modules in XHTML
- B.4. Creating a new Document Type
  - B.4.1. Creating a simple Document Type
  - B.4.2. Creating a Language by extending XHTML
  - B.4.3. Creating a Language by removing and replacing XHTML modules
  - B.4.4. Creating a the new Document Type
C. XHTML Schema Module Implementations
- C.1. Character Entities
- C.2. XHTML Schema Modular Framework
  - C.2.1. XHTML Notations
  - C.2.2. XHTML Datatypes
  - C.2.3. XHTML Common Attribute Definitions
  - C.2.4. XHTML Character Entities
- C.3. XHTML Module Implementations
  - C.3.1. XHTML Core Modules
  - C.3.2. Applet
  - C.3.3. Text Modules
  - C.3.4. Forms
  - C.3.5. Tables
  - C.3.6. Image
  - C.3.7. Client-side Image Map
  - C.3.8. Server-side Image Map
  - C.3.9. Object
  - C.3.10. Frames
  - C.3.11. Target
  - C.3.12. Iframe
  - C.3.13. Intrinsic Events
  - C.3.14. Metainformation
  - C.3.15. Scripting
  - C.3.16. Style Sheet
  - C.3.17. Style Attribute
  - C.3.18. Link
  - C.3.19. Base
  - C.3.20. Name Identification
  - C.3.21. Legacy
  - C.3.22. Ruby
- C.4. XHTML Schema Support Modules
  - C.4.1. Block Phrasal
  - C.4.2. Block Presentational
  - C.4.3. Block Structural
  - C.4.4. Inline Phrasal
  - C.4.5. Inline Presentational
  - C.4.6. Inline Structural
  - C.4.7. Param
  - C.4.8. Legacy - Miscellaneous
D. Building DTD Modules
- D.1. Parameter Entity Naming
- D.2. Defining the Namespace of a Module
  - D.2.1. Qualified Names sub-module
  - D.2.2. Declaration sub-module(s)
  - D.2.3. Using the module as a stand-alone DTD
  - D.2.4. Namespace Idiosyncrasies
E. Developing DTDs with defined and extended modules
- E.1. Defining additional attributes
- E.2. Defining additional elements
- E.3. Defining the content model for a collection of modules
  - E.3.1. Integrating a stand-alone module into XHTML
  - E.3.2. Mixing a new module throughout the modules in XHTML
- E.4. Creating a new DTD
  - E.4.1. Creating a simple DTD
  - E.4.2. Creating a DTD by extending XHTML
  - E.4.3. Creating a DTD by removing and replacing XHTML modules
  - E.4.4. Creating a new DTD
- E.5. Using the new DTD
F. XHTML DTD Module Implementations
- F.1. XHTML Character Entities
  - F.1.1. XHTML Latin 1 Character Entities
  - F.1.2. XHTML Special Characters
  - F.1.3. XHTML Mathematical, Greek, and Symbolic Characters
- F.2. XHTML Modular Framework
  - F.2.1. XHTML Base Architecture
  - F.2.2. XHTML Notations
  - F.2.3. XHTML Datatypes
  - F.2.4. XHTML Common Attribute Definitions
  - F.2.5. XHTML Qualified Names
  - F.2.6. XHTML Character Entities
- F.3. XHTML Module Implementations
  - F.3.1. XHTML Core Modules
  - F.3.2. Applet
  - F.3.3. Text Modules
  - F.3.4. Forms
  - F.3.5. Tables
  - F.3.6. Image
  - F.3.7. Client-side Image Map
  - F.3.8. Server-side Image Map
  - F.3.9. Object
  - F.3.10. Frames
  - F.3.11. Target
  - F.3.12. Iframe
  - F.3.13. Intrinsic Events
  - F.3.14. Metainformation
  - F.3.15. Scripting
  - F.3.16. Style Sheet
  - F.3.17. Style Attribute
  - F.3.18. Link
  - F.3.19. Base
  - F.3.20. Name Identification
  - F.3.21. Legacy
- F.4. XHTML DTD Support Modules
  - F.4.1. Block Phrasal
  - F.4.2. Block Presentational
  - F.4.3. Block Structural
  - F.4.4. Inline Phrasal
  - F.4.5. Inline Presentational
  - F.4.6. Inline Structural
  - F.4.7. Param
  - F.4.8. Legacy Redeclarations
G. References
- G.1. Normative References
- G.2. Informative References
H. Design Goals
- H.1. Requirements
  - H.1.1. Granularity
  - H.1.2. Composibility
  - H.1.3. Ease of Use
  - H.1.4. Compatibility
  - H.1.5. Conformance
J. Acknowledgements
I. Changes from XHTML Modularization 1.0

XHTML™ Modularization 1.1

W3C Proposed Recommendation 11 June 2008

Abstract

Status of This Document

Quick Table of Contents

Full Table of Contents