
   W3C 

XHTML(TM) Basic

W3C Recommendation 19 December 2000

   This version:
          http://www.w3.org/TR/2000/REC-xhtml-basic-20001219
          (Plain text version, PostScript version, PDF version, ZIP
          archive, or Gzip'd TAR archive)

   Latest version:
          http://www.w3.org/TR/xhtml-basic

   Previous version:
          http://www.w3.org/TR/2000/PR-xhtml-basic-20001103

   Editors:
          Mark Baker, Sun Microsystems
          Masayasu Ishikawa, W3C
          Shinichi Matsui, Panasonic
          Peter Stark, Ericsson
          Ted Wugofski, Openwave Systems
          Toshihiko Yamakami, ACCESS Co., Ltd.

   Copyright  1999-2000 W3C (MIT, INRIA, Keio), All Rights Reserved.
   W3C liability, trademark, document use and software licensing rules
   apply.
     _________________________________________________________________

Abstract

   The XHTML Basic document type includes the minimal set of modules
   required to be an XHTML host language document type, and in addition
   it includes images, forms, basic tables, and object support. It is
   designed for Web clients that do not support the full set of XHTML
   features; for example, Web clients such as mobile phones, PDAs,
   pagers, and settop boxes. The document type is rich enough for content
   authoring.

   XHTML Basic is designed as a common base that may be extended. For
   example, an event module that is more generic than the traditional
   HTML 4 event system could be added or it could be extended by
   additional modules from XHTML Modularization such as the Scripting
   Module. The goal of XHTML Basic is to serve as a common language
   supported by various kinds of user agents.

   The document type definition is implemented using XHTML modules as
   defined in "Modularization of XHTML" [XHTMLMOD].

Status of this Document

   This section describes the status of this document at the time of its
   publication. Other documents may supersede this document. The latest
   status of this document series is maintained at the W3C.

   This document has been reviewed by W3C Members and other interested
   parties and has been endorsed by the Director as a W3C Recommendation.
   It is a stable document and may be used as reference material or cited
   as a normative reference from another document. W3C's role in making
   the Recommendation is to draw attention to the specification and to
   promote its widespread deployment. This enhances the functionality and
   interoperability of the Web.

   This document has been produced by the W3C HTML Working Group (members
   only) as part of the W3C HTML Activity. It integrates feedback from
   the WAP Forum and members of the W3C Mobile Access Interest Group
   (members only). This document will be used by the W3C HTML Working
   Group and the W3C Mobile Access Interest Group to find a common ground
   for future markup languages aimed at content for small information
   appliances.

   "Modularization of XHTML" [XHTMLMOD] defines the XHTML modules used in
   the XHTML Basic document type. At the time of this publication, the
   Candidate Recommendation review period for "Modularization of XHTML"
   has closed. Based on that review, the W3C HTML Working Group believes
   that the definition of modules used in XHTML Basic is stable, and the
   Working Group does not expect to make changes to "Modularization of
   XHTML" that would be incompatible with XHTML Basic.

   Public discussion of HTML takes place on www-html@w3.org (archive). To
   subscribe send an email to www-html-request@w3.org with the word
   subscribe in the subject line.

   Please report errors in this document to www-html-editor@w3.org
   (archive). The list of known errors in this document is available at
   http://www.w3.org/2000/12/REC-xhtml-basic-20001219-errata.

   The English version of this specification is the only normative
   version. Information about translations of this document is available
   at http://www.w3.org/MarkUp/translations.

   A list of current W3C Recommendations and other technical documents
   can be found at http://www.w3.org/TR.

Table of Contents

     1. Introduction
          1.1. XHTML for Small Information Appliances
          1.2. Background and Requirements
          1.3. Design Rationale
     2. Conformance
          2.1. Document Conformance
          2.2. User Agent Conformance
     3. The XHTML Basic Document Type
     4. How to Use XHTML Basic
     5. Acknowledgements
     A. References
          A.1. Normative References
          A.2. Informative References
     B. XHTML Basic Document Type Definition
          B.1. SGML Open Catalog Entry for XHTML Basic
          B.2. XHTML Basic Driver
          B.3. XHTML Basic Customizations

1. Introduction

  1.1. XHTML for Small Information Appliances

   HTML 4 is a powerful language for authoring Web content, but its
   design does not take into consideration issues pertinent to small
   devices, including the implementation cost (in power, memory, etc.) of
   the full feature set. Consumer devices with limited resources cannot
   generally afford to implement the full feature set of HTML 4.
   Requiring a full-fledged computer for access to the World Wide Web
   excludes a large portion of the population from consumer device access
   of online information and services.

   Because there are many ways to subset HTML, there are many almost
   identical subsets defined by organizations and companies. Without a
   common base set of features, developing applications for a wide range
   of Web clients is difficult.

   The motivation for XHTML Basic is to provide an XHTML document type
   that can be shared across communities (e.g. desktop, TV, and mobile
   phones), and that is rich enough to be used for simple content
   authoring. New community-wide document types can be defined by
   extending XHTML Basic in such a way that XHTML Basic documents are in
   the set of valid documents of the new document type. Thus an XHTML
   Basic document can be presented on the maximum number of Web clients.

   The document type definition for XHTML Basic is implemented based on
   the XHTML modules defined in Modularization of XHTML [XHTMLMOD].

  1.2. Background and Requirements

   Information appliances are targeted for particular uses. They support
   the features they need for the functions they are designed to fulfill.
   The following are examples of different information appliances:

     * Mobile phones
     * Televisions
     * PDAs
     * Vending machines
     * Pagers
     * Car navigation systems
     * Mobile game machines
     * Digital book readers
     * Smart watches

   Existing subsets and variants of HTML for these clients include
   Compact HTML [CHTML], the Wireless Markup Language [WML], and the
   "HTML 4.0 Guidelines for Mobile Access" [GUIDELINES]. The common
   features found in these document types include:

     * Basic text (including headings, paragraphs, and lists)
     * Hyperlinks and links to related documents
     * Basic forms
     * Basic tables
     * Images
     * Meta information

   This set of HTML features has been the starting point for the design
   of XHTML Basic. Since many content developers are familiar with these
   HTML features, they comprise a useful host language that may be
   combined with markup modules from other languages according to the
   methods described in "Modularization of XHTML" [XHTMLMOD]. For
   example, XHTML Basic may be extended with an event module that is more
   generic than the traditional HTML 4 event system or it could be
   extended by additional modules from XHTML Modularization such as the
   Scripting Module.

   It is not the intention of XHTML Basic to limit the functionality of
   future languages. But since the features in HTML 4 (frames, advanced
   tables, a fixed set of attribute event handlers, etc.) were developed
   for a desktop computer type of client, they have proved to be
   inappropriate for many non-desktop devices. XHTML Basic will be
   extended and built upon. Extending XHTML from a common and basic set
   of features, instead of almost identical subsets or the too-large set
   of functions in HTML 4, will be good for interoperability on the Web,
   as well as for scalability.

   Compared to the rich functionality of HTML 4, XHTML Basic may look
   like one step back, but in fact, it is two steps forward for clients
   that do not need what is in HTML 4 and for content developers who get
   one XHTML subset instead of many.

  1.3. Design Rationale

   This section explains why certain HTML features are not part of XHTML
   Basic.

    1.3.1. Style Sheets

   The style element is not supported. External style sheets are
   recommended. The link element can be used to include external style
   sheets. The div and span elements and the class attribute are
   supported to hook style information onto the structure. Separation
   between structure and presentation allows user agents to download the
   style sheets if they support style sheets; user agents that do not
   support style sheets can ignore the external stylesheet. The media
   attribute can be used to select the appropriate style sheets. See the
   section on "Media types" in the HTML 4.01 specification ([HTML4],
   section 14.2.4) for more details.

    1.3.2. Script and Events

   The script and noscript elements are not supported. Usually small
   devices have limited memory and CPU power. Execution of script
   programs may not be supported. Contents should be readable even if
   scripts are not executed.

   Event handler attributes used to invoke script programs are not
   supported. Events are device dependent. An incoming-call event is
   unlikely to happen in a television. A generic event handling mechanism
   would be more appropriate than hardwiring the event names in the
   document type definition.

    1.3.3. Presentation

   Many simple Web clients cannot display fonts other than monospace.
   Bi-directional text, bold faced font, and other text extension
   elements are not supported.

   It is recommended that style sheets be used to create a presentation
   that is appropriate for the device.

    1.3.4. Forms

   Basic XHTML forms ([XHTMLMOD], section 5.5.1) are supported. Since
   only devices with a local file system can take advantage of file and
   image input types in forms, they are not included in the basic forms.
   Also, content developers should keep in mind that users may not be
   able to input many characters from some devices (e.g. from a mobile
   phone).

    1.3.5. Tables

   Basic XHTML tables ([XHTMLMOD], section 5.6.1) are supported, but
   tables can be difficult to display on small devices. It is recommended
   that content developers follow the Web Content Accessibility
   Guidelines 1.0 for creating accessible tables ([WCAG10], Guideline 5).
   Note that in the Basic Tables Module, nesting of tables is prohibited.

    1.3.6. Frames

   Frames are not supported. Frames depend on a screen interface and may
   not be applicable to some small appliances like phones, pagers, and
   watches.

2. Conformance

   This section is normative.

  2.1. Document Conformance

   A Conforming XHTML Basic document is a document that requires only the
   facilities described as mandatory in this specification. Such a
   document must meet all of the following criteria:

    1. The document must conform to the constraints expressed in Appendix
       B.
    2. The root element of the document must be <html>.
    3. The name of the default namespace on the root element must be the
       XHTML namespace name, http://www.w3.org/1999/xhtml.
    4. There must be a DOCTYPE declaration in the document prior to the
       root element. If present, the public identifier included in the
       DOCTYPE declaration must reference the DTD found in Appendix B
       using its Formal Public Identifier. The system identifier may be
       modified appropriately.

           <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
               "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd">

    5. The DTD subset must not be used to override any parameter entities
       in the DTD.

  2.2. User Agent Conformance

   The user agent must conform to the "User Agent Conformance" section of
   the XHTML 1.0 specification ([XHTML1], section 3.2).

3. The XHTML Basic Document Type

   This section is normative.

   The XHTML Basic document type is defined as a set of XHTML modules.
   All XHTML modules are defined in the "Modularization of XHTML"
   specification [XHTMLMOD].

   XHTML Basic consists of the following XHTML modules:

   Structure Module*
          body, head, html, title

   Text Module*
          abbr, acronym, address, blockquote, br, cite, code, dfn, div,
          em, h1, h2, h3, h4, h5, h6, kbd, p, pre, q, samp, span, strong,
          var

   Hypertext Module*
          a

   List Module*
          dl, dt, dd, ol, ul, li

   Basic Forms Module
          form, input, label, select, option, textarea

   Basic Tables Module
          caption, table, td, th, tr

   Image Module
          img

   Object Module
          object, param

   Metainformation Module
          meta

   Link Module
          link

   Base Module
          base

   (*) = This module is a required XHTML Host Language module.

   An XML 1.0 DTD is available in Appendix B.

   NOTE: Since the HTML event handler attributes are not included in
   XHTML Basic, form controls outside forms may not function as expected
   by the user.

4. How to Use XHTML Basic

   Although XHTML Basic can be used as it is - a simple XHTML language
   with text, links, and images - the intention of its simple design is
   for use as a host language. A host language can contain a mix of
   vocabularies all rolled into one document type. It is natural that
   XHTML is the host language, since that is what most Web developers are
   used to.

   When markup from other languages is added to XHTML Basic, the
   resulting document type will be an extension of XHTML Basic. Content
   developers can develop for XHTML Basic or take advantage of the
   extensions. The goal of XHTML Basic is to serve as a common language
   supported by various kinds of user agents.

5. Acknowledgements

   This specification was prepared by the W3C HTML Working Group. The
   members were:

     * Steven Pemberton, CWI (HTML Working Group Chair)
     * Robert Adams, Intel (until November 2000)
     * Murray Altheim, Sun Microsystems
     * Takuya Asada, W3C (until October 2000)
     * Daniel Austin, Mozquito Technologies
     * Mark Baker, Sun Microsystems
     * Wayne Carr, Intel
     * Tantek elik, Microsoft
     * Andrew W. Donoho, IBM
     * Herman Elenbaas, Philips Electronics
     * Beth Epperson, Netscape/AOL
     * Masayasu Ishikawa, W3C (HTML Activity Lead)
     * Shin'ichi Matsui, Panasonic
     * Shane McCarron, Applied Testing and Technology
     * Ann Navarro, WebGeek, Inc.
     * Dave Raggett, W3C/Openwave Systems
     * Sebastian Schnitzenbaumer, Mozquito Technologies (until September
       2000)
     * Peter Stark, Ericsson
     * Michel Suignard, Microsoft
     * Markku Vartiainen, Openwave Systems
     * Jeremy Wadsworth, Quark Inc.
     * Malte Wedel, Mozquito Technologies
     * Linda Welsh, Intel
     * Ted Wugofski, Openwave Systems

   Thanks to Gary Adams (Sun Microsystems), Jonny Axelsson (Metastasis
   design), Peter Chen (Philips), Dan Connolly (W3C), John Cowan
   (Reuters), Martin J. Drst (W3C), Johan Hjelm (Ericsson), Ian Jacobs
   (W3C), Susan Lesch (W3C), Louis Theran (Nokia), Quinton Zondervan
   (Lotus), members of the W3C Mobile Access Interest Group, the W3C
   Synchronized Multimedia Working Group, the W3C WAI Protocols and
   Formats Working Group, and the WAP Forum, for contributing, reviewing
   and commenting on this document.

A. References

  A.1. Normative References

   [HTML4]
          "HTML 4.01 Specification", W3C Recommendation, D. Raggett, A.
          Le Hors, I. Jacobs, eds., 24 December 1999. Available at:
          http://www.w3.org/TR/1999/REC-html401-19991224
          The latest version is available at: http://www.w3.org/TR/html4

   [XHTML1]
          "XHTML 1.0: The Extensible HyperText Markup Language - A
          Reformulation of HTML 4 in XML 1.0", W3C Recommendation, Steven
          Pemberton et al., 26 January 2000. Available at:
          http://www.w3.org/TR/2000/REC-xhtml1-20000126
          The latest version is available at: http://www.w3.org/TR/xhtml1

   [XHTMLMOD]
          "Modularization of XHTML", W3C Candidate Recommendation, R.
          Adams, M. Altheim, F. Boumphrey, S. Dooley, S. McCarron, S.
          Schnitzenbaumer, T. Wugofski, eds., 20 October 2000. Available
          at: http://www.w3.org/TR/2000/CR-xhtml-modularization-20001020
          The latest version is available at:
          http://www.w3.org/TR/xhtml-modularization

   [XML]
          "Extensible Markup Language (XML) 1.0 (Second Edition)", W3C
          Recommendation, T. Bray, J. Paoli, C. M. Sperberg-McQueen, E.
          Maler, eds., 6 October 2000. Available at:
          http://www.w3.org/TR/2000/REC-xml-20001006
          The latest version is available at:
          http://www.w3.org/TR/REC-xml

  A.2. Informative References

   [CHTML]
          "Compact HTML for Small Information Appliances", W3C Note, T.
          Kamada, 9 February 1998. Available at:
          http://www.w3.org/TR/1998/NOTE-compactHTML-19980209

   [GUIDELINES]
          "HTML 4.0 Guidelines for Mobile Access, W3C Note, T. Kamada, T.
          Asada, M. Ishikawa, S. Matsui, eds., 15 March 1999. Available
          at: http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315
          The latest version is available at:
          http://www.w3.org/TR/NOTE-html40-mobile

   [WCAG10]
          "Web Content Accessibility Guidelines 1.0", W3C Recommendation,
          W. Chisholm, G. Vanderheiden, I. Jacobs, eds., 5 May 1999.
          Available at: http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505
          The latest version is available at: http://www.w3.org/TR/WCAG10

   [WML]
          "Wireless Markup Language Specification", WAP Forum Ltd.
          Available from http://www.wapforum.org/what/technical.htm

B. XHTML Basic Document Type Definition

   This appendix is normative.

  B.1. SGML Open Catalog Entry for XHTML Basic

   This section contains the SGML Open Catalog-format definition of the
   XHTML Basic FPI.

-- .......................................................................... --
-- File catalog  ............................................................ --

--  XHTML Basic Catalog Data File

    Revision:  $Id: xhtml-basic10.cat,v 2.4 2000/12/18 21:42:58 mimasa Exp $ SMI

    See "Entity Management", SGML Open Technical Resolution 9401 for detailed
    information on supplying and using catalog data. This document is available
    from OASIS at URL:

        <http://www.oasis-open.org/html/tr9401.html>
--

-- .......................................................................... --
-- SGML declaration associated with XML  .................................... --

OVERRIDE YES

SGMLDECL "xml1.dcl"

-- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: --

-- XHTML Basic DTD modular driver file  ..................................... --

PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"                       "xhtml-basic10.dtd"

-- XHTML Basic framework module ............................................. --

PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"  "xhtml-basic10-model-1.mod"


-- End of catalog data  ..................................................... --
-- .......................................................................... --

  B.2. XHTML Basic Driver

   This section contains the driver for the XHTML Basic document type
   implementation as an XML DTD. It relies upon XHTML module
   implementations defined in [XHTMLMOD].

<!-- XHTML Basic 1.0 DTD  ...................................................... -->
<!-- file: xhtml-basic10.dtd -->

<!-- XHTML Basic 1.0 DTD

     This is XHTML Basic, a proper subset of XHTML.

     The Extensible HyperText Markup Language (XHTML)
     Copyright 1998-2000 World Wide Web Consortium
        (Massachusetts Institute of Technology, Institut National de
         Recherche en Informatique et en Automatique, Keio University).
         All Rights Reserved.

     Permission to use, copy, modify and distribute the XHTML Basic DTD
     and its accompanying documentation for any purpose and without fee is
     hereby granted in perpetuity, provided that the above copyright notice
     and this paragraph appear in all copies.  The copyright holders make
     no representation about the suitability of the DTD for any purpose.

     It is provided "as is" without expressed or implied warranty.

        Editors:    Murray M. Altheim <mailto:altheim@eng.sun.com>
                    Peter Stark       <mailto:Peter.Stark@ecs.ericsson.se>
        Revision:   $Id: xhtml-basic10.dtd,v 2.13 2000/12/18 12:56:23 mimasa Exp $ SMI

-->
<!-- This is the driver file for version 1.0 of the XHTML Basic DTD.

     This DTD is identified by the PUBLIC and SYSTEM identifiers:

     PUBLIC: "-//W3C//DTD XHTML Basic 1.0//EN"
     SYSTEM: "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd"
-->
<!ENTITY % XHTML.version  "-//W3C//DTD XHTML Basic 1.0//EN" >

<!-- Use this URI to identify the default namespace:

         "http://www.w3.org/1999/xhtml"

     See the Qualified Names module for information
     on the use of namespace prefixes in the DTD.
-->
<!ENTITY % NS.prefixed "IGNORE" >
<!ENTITY % XHTML.prefix  "" >

<!-- Reserved for use with the XLink namespace:
-->
<!ENTITY % XLINK.xmlns "" >
<!ENTITY % XLINK.xmlns.attrib "" >

<!-- For example, if you are using XHTML Basic 1.0 directly, use
     the FPI in the DOCTYPE declaration, with the xmlns attribute
     on the document element to identify the default namespace:

         <?xml version="1.0"?>
         <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
             "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd" >
         <html xmlns="http://www.w3.org/1999/xhtml"
               xml:lang="en" >
         ...
         </html>
-->

<!-- reserved for future use with document profiles -->
<!ENTITY % XHTML.profile  "" >

<!-- Bidirectional Text features
     This feature-test entity is used to declare elements
     and attributes used for bidirectional text support.
-->
<!ENTITY % XHTML.bidi  "IGNORE" >

<?doc type="doctype" role="title" { XHTML Basic 1.0 } ?>

<!-- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -->

<!ENTITY % xhtml-events.module   "IGNORE" >
<!ENTITY % xhtml-bdo.module      "%XHTML.bidi;" >

<!ENTITY % xhtml-model.mod
     PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"
            "xhtml-basic10-model-1.mod" >

<!ENTITY % xhtml-framework.mod
     PUBLIC "-//W3C//ENTITIES XHTML Modular Framework 1.0//EN"
            "xhtml-framework-1.mod" >
%xhtml-framework.mod;

<!ENTITY % pre.content
     "( #PCDATA
      | %InlStruct.class;
      %InlPhras.class;
      %Anchor.class;
      %Inline.extra; )*"
>

<!ENTITY % xhtml-text.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Text 1.0//EN"
            "xhtml-text-1.mod" >
%xhtml-text.mod;

<!ENTITY % xhtml-hypertext.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Hypertext 1.0//EN"
            "xhtml-hypertext-1.mod" >
%xhtml-hypertext.mod;

<!ENTITY % xhtml-list.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Lists 1.0//EN"
            "xhtml-list-1.mod" >
%xhtml-list.mod;

<!-- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -->

<!-- Image Module  ............................................... -->
<!ENTITY % xhtml-image.module "INCLUDE" >
<![%xhtml-image.module;[
<!ENTITY % xhtml-image.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Images 1.0//EN"
            "xhtml-image-1.mod" >
%xhtml-image.mod;]]>

<!-- Tables Module ............................................... -->
<!ENTITY % xhtml-table.module "INCLUDE" >
<![%xhtml-table.module;[
<!ENTITY % xhtml-table.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Basic Tables 1.0//EN"
            "xhtml-basic-table-1.mod" >
%xhtml-table.mod;]]>

<!-- Forms Module  ............................................... -->
<!ENTITY % xhtml-form.module "INCLUDE" >
<![%xhtml-form.module;[
<!ENTITY % xhtml-form.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Basic Forms 1.0//EN"
            "xhtml-basic-form-1.mod" >
%xhtml-form.mod;]]>

<!-- Link Element Module  ........................................ -->
<!ENTITY % xhtml-link.module "INCLUDE" >
<![%xhtml-link.module;[
<!ENTITY % xhtml-link.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Link Element 1.0//EN"
            "xhtml-link-1.mod" >
%xhtml-link.mod;]]>

<!-- Document Metainformation Module  ............................ -->
<!ENTITY % xhtml-meta.module "INCLUDE" >
<![%xhtml-meta.module;[
<!ENTITY % xhtml-meta.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Metainformation 1.0//EN"
            "xhtml-meta-1.mod" >
%xhtml-meta.mod;]]>

<!-- Base Element Module  ........................................ -->
<!ENTITY % xhtml-base.module "INCLUDE" >
<![%xhtml-base.module;[
<!ENTITY % xhtml-base.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Base Element 1.0//EN"
            "xhtml-base-1.mod" >
%xhtml-base.mod;]]>

<!-- Param Element Module  ....................................... -->
<!ENTITY % xhtml-param.module "INCLUDE" >
<![%xhtml-param.module;[
<!ENTITY % xhtml-param.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Param Element 1.0//EN"
            "xhtml-param-1.mod" >
%xhtml-param.mod;]]>

<!-- Embedded Object Module  ..................................... -->
<!ENTITY % xhtml-object.module "INCLUDE" >
<![%xhtml-object.module;[
<!ENTITY % xhtml-object.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Embedded Object 1.0//EN"
            "xhtml-object-1.mod" >
%xhtml-object.mod;]]>

<!ENTITY % xhtml-struct.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Document Structure 1.0//EN"
            "xhtml-struct-1.mod" >
%xhtml-struct.mod;

<!-- end of XHTML Basic 1.0 DTD  ........................................... -->

  B.3. XHTML Basic Customizations

   An XHTML Family Document Type (such as XHTML Basic) must define the
   content model that it uses. This is done through a separate content
   model module that is instantiated by the XHTML Modular Framework. The
   content model module and the XHTML Basic Driver (above) work together
   to customize the module implementations to the document type's
   specific requirements. The content model module for XHTML Basic is
   defined below:

<!-- ....................................................................... -->
<!-- XHTML Basic 1.0 Document Model Module  .................................... -->
<!-- file: xhtml-basic10-model-1.mod

     This is XHTML Basic, a proper subset of XHTML.
     Copyright 1998-2000 W3C (MIT, INRIA, Keio), All Rights Reserved.
     Revision: $Id: xhtml-basic10-model-1.mod,v 2.8 2000/11/03 14:28:25 mimasa Exp $ SMI

     This DTD module is identified by the PUBLIC and SYSTEM identifiers:

       PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"
       SYSTEM "http://www.w3.org/TR/xhtml-basic/xhtml-basic10-model-1.mod"

     Revisions:
     (none)
     ....................................................................... -->

<!-- XHTML Basic Document Model

     This module describes the groupings of elements that make up
     common content models for XHTML elements.
-->

<!-- Optional Elements in head  .............. -->

<!ENTITY % HeadOpts.mix
     "( %meta.qname; | %link.qname; | %object.qname; )*" >

<!-- Miscellaneous Elements  ................. -->

<!ENTITY % Misc.class "" >

<!-- Inline Elements  ........................ -->

<!ENTITY % InlStruct.class "%br.qname; | %span.qname;" >

<!ENTITY % InlPhras.class
     "| %em.qname; | %strong.qname; | %dfn.qname; | %code.qname;
      | %samp.qname; | %kbd.qname; | %var.qname; | %cite.qname;
      | %abbr.qname; | %acronym.qname; | %q.qname;" >

<!ENTITY % InlPres.class "" >

<!ENTITY % I18n.class "" >

<!ENTITY % Anchor.class "| %a.qname;" >

<!ENTITY % InlSpecial.class "| %img.qname; | %object.qname;" >

<!ENTITY % InlForm.class
     "| %input.qname; | %select.qname; | %textarea.qname;
      | %label.qname;"
>

<!ENTITY % Inline.extra "" >

<!ENTITY % Inline.class
     "%InlStruct.class;
      %InlPhras.class;
      %Anchor.class;
      %InlSpecial.class;
      %InlForm.class;
      %Inline.extra;"
>

<!ENTITY % InlNoAnchor.class
     "%InlStruct.class;
      %InlPhras.class;
      %InlSpecial.class;
      %InlForm.class;
      %Inline.extra;"
>

<!ENTITY % InlNoAnchor.mix
     "%InlNoAnchor.class;
      %Misc.class;"
>

<!ENTITY % Inline.mix
     "%Inline.class;
      %Misc.class;"
>

<!-- Block Elements  ......................... -->

<!ENTITY % Heading.class
     "%h1.qname; | %h2.qname; | %h3.qname;
      | %h4.qname; | %h5.qname; | %h6.qname;"
>
<!ENTITY % List.class  "%ul.qname; | %ol.qname; | %dl.qname;" >

<!ENTITY % Table.class "| %table.qname;" >

<!ENTITY % Form.class  "| %form.qname;" >

<!ENTITY % BlkStruct.class "%p.qname; | %div.qname;" >

<!ENTITY % BlkPhras.class
     "| %pre.qname; | %blockquote.qname; | %address.qname;"
>

<!ENTITY % BlkPres.class "" >

<!ENTITY % BlkSpecial.class
     "%Table.class;
      %Form.class;"
>

<!ENTITY % Block.extra "" >

<!ENTITY % Block.class
     "%BlkStruct.class;
      %BlkPhras.class;
      %BlkSpecial.class;
      %Block.extra;"
>

<!ENTITY % Block.mix
     "%Heading.class;
      | %List.class;
      | %Block.class;
      %Misc.class;"
>

<!-- All Content Elements  ................... -->

<!-- declares all content except tables
-->
<!ENTITY % FlowNoTable.mix
     "%Heading.class;
      | %List.class;
      | %BlkStruct.class;
      %BlkPhras.class;
      %Form.class;
      %Block.extra;
      | %Inline.class;
      %Misc.class;"
>

<!ENTITY % Flow.mix
     "%Heading.class;
      | %List.class;
      | %Block.class;
      | %Inline.class;
      %Misc.class;"
>

<!-- end of xhtml-basic10-model-1.mod -->
