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2321 lines
94 KiB
2321 lines
94 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"
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"http://www.w3.org/TR/REC-html40/strict.dtd">
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<HTML lang="en">
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<HEAD>
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<TITLE>HTML 4.0 Guidelines for Mobile Access</TITLE>
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<LINK rel="stylesheet" type="text/css" media="print"
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title="style sheets for printing" href="style/print.css">
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<LINK rel="stylesheet" type="text/css" media="screen"
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title="style sheets for W3C Notes"
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href="http://www.w3.org/StyleSheets/TR/W3C-NOTE">
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<LINK rel="stylesheet" type="text/css" media="screen"
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title="style sheets for screen rendering" href="style/screen.css">
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<LINK rel="alternate" type="text/plain" title="plain text version"
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href="NOTE-html40-mobile.txt">
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<LINK rel="alternate" type="application/octet-stream"
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title="gzip'd tar file version" href="NOTE-html40-mobile.tgz">
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<LINK rel="alternate" type="application/zip" title="zip file version"
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href="NOTE-html40-mobile.zip">
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</HEAD>
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<BODY>
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<DIV class="head">
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<P class="logo"><A accesskey="W" href="http://www.w3.org/"><IMG alt="W3C"
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src="http://www.w3.org/Icons/WWW/w3c_home"></A></P>
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</DIV>
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<H1 class="title">
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<ACRONYM title="HyperText Markup Language">HTML</ACRONYM>
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4.0 Guidelines for Mobile Access
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</H1>
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<H2 class="date">
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<ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Note - 15 March 1999
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</H2>
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<DL>
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<DT>This version:</DT>
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<DD><SPAN class="URI"><<A href="http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315</A>></SPAN></DD>
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<DT>Latest version:</DT>
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<DD><SPAN class="URI"><<A href="http://www.w3.org/TR/NOTE-html40-mobile">http://www.w3.org/TR/NOTE-html40-mobile</A>></SPAN></DD>
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<DT>Editors:</DT>
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<DD>Tomihisa Kamada, ACCESS Co.,<ABBR title="Limited">Ltd.</ABBR> <SPAN class="URI"><<A href="mailto:tomy@access.co.jp">tomy@access.co.jp</A>></SPAN></DD>
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<DD>Takuya Asada, <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> <SPAN class="URI"><<A href="mailto:asada@w3.org">asada@w3.org</A>></SPAN></DD>
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<DD>Masayasu Ishikawa, <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> <SPAN class="URI"><<A href="mailto:mimasa@w3.org">mimasa@w3.org</A>></SPAN></DD>
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<DD>Shin'ichi Matsui, <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM>/Panasonic <SPAN class="URI"><<A href="mailto:matsui@w3.org">matsui@w3.org</A>></SPAN></DD>
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</DL>
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<P class="copyright">
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<A href="http://www.w3.org/Consortium/Legal/ipr-notice.html#Copyright">Copyright</A> © 1998-1999 <A href="http://www.w3.org/"><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM></A>
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(<A href="http://www.lcs.mit.edu/"><ACRONYM
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title="Massachusetts Institute of Technology">MIT</ACRONYM></A>,
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<A href="http://www.inria.fr/"><ACRONYM lang="fr"
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title="Institut National de Recherche en Informatique et en Automatique">INRIA</ACRONYM></A>,
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<A href="http://www.keio.ac.jp/">Keio</A>), All Rights Reserved.
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<ACRONYM title="World Wide Web Consortium">W3C</ACRONYM>
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<A href="http://www.w3.org/Consortium/Legal/ipr-notice.html#Legal_Disclaimer">liability</A>,
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<A href="http://www.w3.org/Consortium/Legal/ipr-notice.html#W3C_Trademarks">trademark</A>,
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<A href="http://www.w3.org/Consortium/Legal/copyright-documents.html">document use</A> and
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<A href="http://www.w3.org/Consortium/Legal/copyright-software.html">software licensing</A>
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rules apply.
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</P>
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<H2><A name="Status">Status of This Document</A></H2>
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<P>
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This document is a Note made available by the World Wide Web Consortium
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(<ACRONYM title="World Wide Web Consortium">W3C</ACRONYM>) for discussion.
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This document may be updated, replaced or rendered obsolete by other
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documents at any time. It is inappropriate to use this document
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as reference material or to cite them as other than "work in progress".
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This is work in progress, and does not imply endorsement by,
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or the consensus of, either <A href="http://www.w3.org/Consortium/Member/List"><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> membership</A>
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or members of the <A href="http://www.w3.org/Mobile/Group/IG/">Mobile Access
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Interest Group</A>
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(<A href="http://cgi.w3.org/MemberAccess/">members only</A>).
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</P>
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<P>
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This document has been produced as part of the <A href="http://www.w3.org/Mobile/Activity"><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Mobile Access Activity</A>.
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Please send comments about this document to the public mailing list
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<A href="mailto:www-mobile@w3.org">www-mobile@w3.org</A>
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(<A href="http://lists.w3.org/Archives/Public/www-mobile/">archive</A>).
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</P>
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<H2><A name="Abstract">Abstract</A></H2>
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<P>
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This document describes guidelines for content authors how to create
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<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 contents
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to be acceptable to mobile devices as much as possible.
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</P>
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<H2><A name="Formats">Available Formats</A></H2>
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<P>
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This document is available in the following formats:
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</P>
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<DL>
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<DT><ACRONYM title="HyperText Markup Language">HTML</ACRONYM>:</DT>
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<DD><SPAN class="URI"><<A type="text/html" charset="US-ASCII" href="NOTE-html40-mobile.html">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315/NOTE-html40-mobile.html</A>></SPAN></DD>
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<DT>A plain text file:</DT>
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<DD><SPAN class="URI"><<A type="text/plain" charset="US-ASCII" href="NOTE-html40-mobile.txt">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315/NOTE-html40-mobile.txt</A>></SPAN></DD>
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<DT><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> as a gzip'ed tar file, including accompanying resources:</DT>
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<DD><SPAN class="URI"><<A type="application/octet-stream" href="NOTE-html40-mobile.tgz">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315/NOTE-html40-mobile.tgz</A>></SPAN></DD>
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<DT><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> as a zip file, including accompanying resources:</DT>
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<DD><SPAN class="URI"><<A type="application/zip" href="NOTE-html40-mobile.zip">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315/NOTE-html40-mobile.zip</A>></SPAN></DD>
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</DL>
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<P>
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|
In case of a discrepancy between the various formats of the document,
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<SPAN class="URI"><<A href="http://www.w3.org/TR/NOTE-html40-mobile">http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315</A>></SPAN>
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is considered the definitive version.
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</P>
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<H2><A name="ToC">Table of Contents</A></H2>
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<DIV class="ToC">
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<OL>
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<LI><A accesskey="1" href="#Intro">Introduction</A></LI>
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<LI><A accesskey="2" href="#Requirements">Requirements from Mobile Access</A>
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<OL>
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<LI><A href="#Hardware">Hardware Restrictions</A></LI>
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<LI><A href="#Bandwidth">Narrow Bandwidth Networking</A></LI>
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<LI><A href="#Accessibility">Accessibility Requirements</A></LI>
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</OL>
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</LI>
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<LI><A accesskey="3" href="#Guidelines">Guidelines for Mobile Access</A>
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<OL>
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<LI><A href="#Styles">Styles</A></LI>
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<LI><A href="#Scripts">Scripts, Event Handlers</A></LI>
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<LI><A href="#Forms">Forms</A></LI>
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<LI><A href="#Frames">Frames</A></LI>
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<LI><A href="#Imagemaps">Image Maps</A></LI>
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<LI><A href="#Tables">Tables</A></LI>
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<LI><A href="#Objects">Objects and Images</A></LI>
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<LI><A href="#Accesskeys">Access keys</A></LI>
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</OL>
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</LI>
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<LI><A accesskey="4" href="#Validation">A Sample <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 <ACRONYM title="Document Type Definition">DTD</ACRONYM> for Mobile Access</A></LI>
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<LI><A accesskey="5" href="#Remarks">Concluding Remarks and Future Directions</A></LI>
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</OL>
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<UL>
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<LI><A accesskey="R" href="#References">References</A></LI>
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<LI><A accesskey="A" href="#Appendix">Appendix <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile <ACRONYM title="Document Type Definition">DTD</ACRONYM></A>
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<UL>
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<LI><A accesskey="C" href="#Catalog">Sample <ACRONYM title="Standard Generalized Markup Language">SGML</ACRONYM> catalog</A></LI>
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<LI><A accesskey="D" href="#DTD">Document Type Definition</A></LI>
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</UL>
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</LI>
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</UL>
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</DIV>
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<H2><A name="Intro">1. Introduction</A></H2>
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<P>
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Ever since the Internet industry exploded a few years ago, numerous related
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industries have spawned and flourished from the standard
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<ACRONYM title="World Wide Web">WWW</ACRONYM> (World Wide Web) infrastructure.
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This growth is most attributable to the exponential growth of Internet users
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all over the world.
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Today, Internet access is no longer limited to personal computers and
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powerful workstations in your office, but is reaching into the your home, as
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well as on the road.
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</P>
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<P>
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A new class of electronics devices with Internet access capability called
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"Information Appliances" was recently born. This Internet access capability is
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embedded in devices such as televisions, set top boxes, home game machines,
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telephone-based terminals, <ACRONYM title="Personal Digital Assistant">PDA</ACRONYM>s,
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car navigation systems and cellular phones. These Internet
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appliances will drive the merger of wireless and wired Internet world that
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will eventually create a much larger industry than today's predominantly wired
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Internet industry.
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</P>
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<P>
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The need to support this new class of information appliances while still
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meeting the <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> standards
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and the rigid design requirements are the challenges this evolving industry
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faces today.
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</P>
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|
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<P>
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This document describes guidelines for content authors how to use
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<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Specification
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<A href="#HTML40">[HTML40]</A> effectively for "Mobile Access",
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and some design notes for user agent manufacturers.
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|
</P>
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|
|
|
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|
<H2><A name="Requirements">2. Requirements from Mobile Access</A></H2>
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|
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|
<P>
|
|
There are a wide range of mobile devices in the market.
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|
The typical product examples are as follows:
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|
</P>
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|
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|
<UL>
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|
<LI><ACRONYM title="Personal Digital Assistant">PDA</ACRONYM></LI>
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<LI>mobile phone</LI>
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<LI>pager</LI>
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|
<LI>embedded system</LI>
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|
<LI>automobile information appliance (car navigation system)</LI>
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|
<LI>mobile game machine</LI>
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|
<LI>digital book reader</LI>
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|
<LI>smart watch</LI>
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|
</UL>
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|
|
|
<P>
|
|
This section summarizes the requirements from "Mobile Access".
|
|
</P>
|
|
|
|
<H3><A name="Hardware">2.1. Hardware Restrictions</A></H3>
|
|
|
|
<P>
|
|
As described in <A href="#CompactHTML">[CompactHTML]</A>,
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|
there are several hardware restrictions in mobile devices.
|
|
The major characteristics are as follows:
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|
</P>
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|
|
|
<UL>
|
|
<LI>small memory capacity</LI>
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|
<LI>small display space</LI>
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|
<LI>less powerful <ACRONYM title="Central Processing Unit">CPU</ACRONYM></LI>
|
|
<LI>limited input method</LI>
|
|
<LI>no or small data storage</LI>
|
|
<LI>limited power consumption</LI>
|
|
</UL>
|
|
|
|
<P>
|
|
These characteristics have to be taken into account in designing
|
|
the user agent functionality for mobile devices,
|
|
as well as creating mobile-friendly contents.
|
|
</P>
|
|
|
|
<H3><A name="Bandwidth">2.2. Narrow Bandwidth Networking</A></H3>
|
|
|
|
<P>
|
|
The size of contents should be small in the case of narrow bandwidth
|
|
and low speed wireless networking. The major characteristics of
|
|
today's wireless connection are as follows:
|
|
</P>
|
|
|
|
<UL>
|
|
<LI>slow speed</LI>
|
|
<LI>unstable</LI>
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|
<LI>expensive</LI>
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|
<LI>non-<ACRONYM title="Internet Protocol">IP</ACRONYM> connection</LI>
|
|
</UL>
|
|
|
|
<P>
|
|
These restrictions depend on underlying communication bearers. The
|
|
infrastructure will be improved in the third generation wireless phone
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|
networking.
|
|
</P>
|
|
|
|
<H3><A name="Accessibility">2.3. Accessibility Requirements</A></H3>
|
|
|
|
<P>
|
|
Simple and easy operations of information appliances are very
|
|
important. Unlike <ACRONYM title="Personal Computer">PC</ACRONYM>
|
|
user interface, keyboard and mouse are not suitable for mobile
|
|
devices. Rather, intuitive operation like a four-button interface
|
|
(cursor forward, cursor back, select, and back buttons) is required.
|
|
In this sense, some kind of accessibility considerations,
|
|
as described in <A href="http://www.w3.org/WAI/#Resources"><ACRONYM title="Web Accessibility Initiative">WAI</ACRONYM>
|
|
Accessibility Guidelines</A>, should be taken into account.
|
|
In general, <ACRONYM title="Web Accessibility Initiative">WAI</ACRONYM>
|
|
Accessiblity Guidelines are also useful for mobile access.
|
|
</P>
|
|
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|
<P>
|
|
For example, the "<CODE>accesskey</CODE>" attribute of
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|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 can be
|
|
used to assign buttons to links or form selections.
|
|
Also, alternative text for images should be provided via
|
|
"<CODE>alt</CODE>" attribute so that mobile devices can make use of text
|
|
descriptions instead of large images. For more information,
|
|
see section <A href="#Accesskeys">3.8</A> and <A href="#Objects">3.7</a> respectively.
|
|
</P>
|
|
|
|
<H2><A name="Guidelines">3. Guidelines for Mobile Access</A></H2>
|
|
|
|
<P>
|
|
This section describes the detail of the <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 guidelines for
|
|
mobile access.
|
|
</P>
|
|
|
|
<P>
|
|
In order to meet the requirements as described in
|
|
<A href="#Requirements">section 2</A>, we use
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict,
|
|
which excludes the presentation attributes and elements, as a suitable
|
|
baseline for mobile access. Thus, the following guidelines assume to use
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict.
|
|
</P>
|
|
|
|
<H3><A name="Styles">3.1. Styles</A></H3>
|
|
|
|
<P>
|
|
Usual mobile devices have small size of screens, and limited display
|
|
capabilities, thus in many cases style sheets are not supported,
|
|
or its support is limited.
|
|
</P>
|
|
|
|
<P>
|
|
When style sheets are used, external style sheets are recommended from the
|
|
viewpoint of content size and separation of structure and style.
|
|
In this way, user agents which don't support style sheets don't have
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|
to load unnecessary style sheets.
|
|
</P>
|
|
|
|
<P>
|
|
The "<CODE>media</CODE>" attribute can be used so that user agents can select
|
|
appropriate style sheets. See section
|
|
<A href="http://www.w3.org/TR/REC-html40/present/styles.html#h-14.2.4">14.2.4</A>
|
|
of <A href="#HTML40">[HTML40]</A> for more detail.
|
|
</P>
|
|
|
|
<P>
|
|
The <CODE>STYLE</CODE> element can be also used, but inline style sheets
|
|
via "<CODE>style</CODE>" attribute is not preferred,
|
|
because it's not flexible and almost like the presentation attributes
|
|
which are deprecated and excluded from the
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict.
|
|
</P>
|
|
|
|
<P>
|
|
Contents should be readable without style sheets so that devices
|
|
which don't support style sheets can still render contents reasonably.
|
|
</P>
|
|
|
|
<P>
|
|
See also section
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/wai-pageauth-tech#style">2.10</A>
|
|
of Techniques for <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>.
|
|
</P>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<P class="note">
|
|
It is desirable that even if user agents don't support style sheets,
|
|
it should parse <CODE>STYLE</CODE> elements not to show
|
|
styles nor to cause any other side-effects.
|
|
</P>
|
|
|
|
<H3><A name="Scripts">3.2. Scripts, Event Handlers</A></H3>
|
|
|
|
<P>
|
|
Usual mobile devices have limitation of memory storage,
|
|
<ACRONYM title="Central Processing Unit">CPU</ACRONYM> power and so on,
|
|
thus in many cases scripting are not supported.
|
|
It should not be assumed that scripts will always be executed.
|
|
Contents should be readable even if scripts are not executed.
|
|
</P>
|
|
|
|
<P>
|
|
See also section
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/wai-pageauth-tech#scripts">2.13</A>
|
|
of Techniques for <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>.
|
|
</P>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<P class="note">
|
|
It is desirable that even if user agents don't support scripts,
|
|
it should parse <CODE>SCRIPT</CODE> elements not to show
|
|
scripts nor to cause any other side-effects.
|
|
</P>
|
|
|
|
<H3><A name="Forms">3.3. Forms</A></H3>
|
|
|
|
<P>
|
|
Usual mobile devices support basic forms, but they don't have
|
|
keyboards like desktop <ACRONYM title="Personal Computer">PC</ACRONYM>s.
|
|
Content authors should keep in mind that it will be hard for users of
|
|
mobile devices to input many characters.
|
|
</P>
|
|
|
|
<P>
|
|
Since sometimes mobile devices don't have local file systems, some features,
|
|
which depend on local file system, such as file upload, should not be used.
|
|
</P>
|
|
|
|
<P>
|
|
Many mobile devices do not support images, thus value "<CODE>image</CODE>"
|
|
for "<CODE>type</CODE>" attribute of <CODE>INPUT</CODE> element should not
|
|
be used.
|
|
</P>
|
|
|
|
<P>
|
|
As described in <A href="#Scripts">3.2</A>, authors should not rely on
|
|
scripting, and should avoid using attributes for event handling, such as
|
|
<CODE>onsubmit</CODE>.
|
|
</P>
|
|
|
|
<P>
|
|
See also section
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/wai-pageauth-tech#forms">2.12</A>
|
|
of Techniques for <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>.
|
|
</P>
|
|
|
|
<H3><A name="Frames">3.4. Frames</A></H3>
|
|
|
|
<P>
|
|
Usual mobile devices have small size of screens, and some of them
|
|
support only textual information. Frames strongly depend on
|
|
screen interface, and are not part of the <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict.
|
|
Therefore, frames should not be used.
|
|
</P>
|
|
|
|
<P>
|
|
If there is compelling reason to use frames, make sure that those contents
|
|
have the descriptions below:
|
|
</P>
|
|
|
|
<UL>
|
|
<LI>Provide a fallback content for contents that contain frames using
|
|
<CODE>NOFRAMES</CODE> at the end of each <CODE>FRAMESET</CODE>.</LI>
|
|
<LI>Name each frame via the "<CODE>title</CODE>" attribute on <CODE>FRAME</CODE>
|
|
elements so that users can keep track of frames by name.</LI>
|
|
</UL>
|
|
|
|
<P>
|
|
See also section
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/wai-pageauth-tech#frames">2.11</A>
|
|
of Techniques for <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>.
|
|
</P>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<P class="note">
|
|
If user agents don't support frames, it should render contents of
|
|
the <CODE>NOFRAMES</CODE> element.
|
|
Also, even if user agents can't render frames,
|
|
it is desirable to provide links to each frame,
|
|
so that users can access to contents of each frame.
|
|
</P>
|
|
|
|
<H3><A name="Imagemaps">3.5. Image Maps</A></H3>
|
|
|
|
<P>
|
|
On mobile devices, it cannot be generally assumed that images are
|
|
always rendered, nor can be pointed by pointing devices like mouse.
|
|
Therefore, server-side image maps should not be used.
|
|
</P>
|
|
|
|
<P>
|
|
On the other hand, client-side image maps can be used even if
|
|
images are not rendered nor can be pointed,
|
|
so authors may include client-side image maps into their contents.
|
|
But this is acceptable only when alternative descriptions are
|
|
provided via "<CODE>alt</CODE>" attribute of <CODE>AREA</CODE> element,
|
|
which is a required attribute in <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0,
|
|
as in many cases images are not rendered on mobile devices,
|
|
or pointing on images is impossible even if
|
|
images can be rendered, as described above.
|
|
</P>
|
|
|
|
<P>
|
|
See also section
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/wai-pageauth-tech#images">2.7</A>
|
|
of Techniques for <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>.
|
|
</P>
|
|
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<P class="note">
|
|
It will be desirable that user agents render images and provide selections
|
|
with pointing (using area information) if possible. Even if rendering
|
|
images or selection with pointing are impossible, they should provide access
|
|
to linked resource of each area via "<CODE>alt</CODE>" attribute of
|
|
<CODE>AREA</CODE> element.
|
|
</P>
|
|
|
|
<H3><A name="Tables">3.6. Tables</A></H3>
|
|
|
|
<P>
|
|
Many mobile devices have small size of screens. If contents
|
|
have table descriptions, it will be very difficult to browse them
|
|
in mobile devices.
|
|
In addition, though it would be possible to restructure tables
|
|
in accessible way by following guidelines as described in
|
|
<A href="http://www.w3.org/TR/WD-WAI-PAGEAUTH/#gl-table-markup">Guideline 7</A>
|
|
of <A href="#WAI-WEBCONTENT">[WAI-WEBCONTENT]</A>,
|
|
it will be difficult for mobile devices to process
|
|
complex tables due to the hardware restrictions as described
|
|
in <A href="#Hardware">2.1</A>.
|
|
It would be, therefore, safe to avoid using tables whenever possible.
|
|
Consider alternative structures, e.g. lists, whenever appropriate.
|
|
Content authors should not expect tables will always be processed
|
|
in mobile devices.
|
|
</P>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<DIV class="note">
|
|
<P>
|
|
Even if it would be difficult, user agents may parse and render tables
|
|
if possible. For example, the <CODE>CAPTION</CODE> element and
|
|
"<CODE>summary</CODE>" attribute are usable to summarize tables.
|
|
See also <A href="#WAI-USERAGENT">[WAI-USERAGENT]</A>.
|
|
</P>
|
|
</DIV>
|
|
|
|
<H3><A name="Objects">3.7. Objects and Images</A></H3>
|
|
|
|
<P>
|
|
The <CODE>OBJECT</CODE> elements, which are designed to embed various
|
|
objects including images into
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> documents,
|
|
are also useful in mobile devices. For example, contents which have voice
|
|
(speech) contents for cell phones and contents which have graphical maps
|
|
for car navigation systems may become typical contents for those devices,
|
|
as these contents match essential needs and functions of them.
|
|
</P>
|
|
|
|
<P>
|
|
When embedding objects via <CODE>OBJECT</CODE> element, alternative contents
|
|
should be provided by the fallback mechanism of <CODE>OBJECT</CODE> element.
|
|
These alternative contents should end up with texts.
|
|
</P>
|
|
|
|
<P>
|
|
An example below is quoted from <A href="#HTML40">[HTML40]</A>:
|
|
</P>
|
|
|
|
<DIV class="sample">
|
|
<PRE>
|
|
<P>
|
|
<OBJECT data="navbar.png" type="image/png">
|
|
<OBJECT data="navbar.gif" type="image/gif">
|
|
text describing the image...
|
|
</OBJECT>
|
|
</OBJECT>
|
|
</P>
|
|
</PRE>
|
|
</DIV>
|
|
|
|
<P>
|
|
In general, images should be embedded via <CODE>OBJECT</CODE> element,
|
|
as it has better fallback mechanism, but <CODE>IMG</CODE> element may
|
|
also be used. In this case, alternative description via "<CODE>alt</CODE>"
|
|
attribute, which is required in <A href="#HTML40">[HTML40]</A>,
|
|
should be provided for user agents which cannot or do not render images.
|
|
This guideline doesn't specify nor recommend specific formats for images.
|
|
</P>
|
|
|
|
<P>
|
|
If the image represents an important information,
|
|
a long description should be provided via <CODE>longdesc</CODE> attribute
|
|
of <CODE>IMG</CODE> element, in addition to alternative text via
|
|
<CODE>alt</CODE> attribute.
|
|
</P>
|
|
|
|
<P>
|
|
The <CODE>APPLET</CODE> element, which is not part of the
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict,
|
|
should not be used in favor of the <CODE>OBJECT</CODE> element.
|
|
</P>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<DIV class="note">
|
|
<P>
|
|
User agents should try to render nested objects according to
|
|
the precedence rules described in
|
|
<A href="http://www.w3.org/TR/REC-html40/struct/objects.html#h-13.3.1">section 13.3.1</A> of <A href="#HTML40">[HTML40]</A>.
|
|
Even if user agents don't support <CODE>OBJECT</CODE> elements,
|
|
they should render alternative content of <CODE>OBJECT</CODE> element as a fallback.
|
|
</P>
|
|
|
|
<P>
|
|
If a long description is provided via <CODE>longdesc</CODE> attribute
|
|
of <CODE>IMG</CODE> element, user agents should provide access to that
|
|
long description.
|
|
</P>
|
|
</DIV>
|
|
|
|
<H3><A name="Accesskeys">3.8. Access keys</A></H3>
|
|
|
|
<P>
|
|
In general, it cannot be assumed that input methods which
|
|
consists of a (full) keyboard and a pointing device such as mouse
|
|
are available in mobile devices. It is desirable that description
|
|
for efficient use of input methods on mobile devices are provided in
|
|
contents.
|
|
</P>
|
|
|
|
<P>
|
|
From this viewpoint, assigning access keys via "<CODE>accesskey</CODE>"
|
|
attribute (for <CODE>A</CODE>, <CODE>AREA</CODE>, <CODE>BUTTON</CODE>,
|
|
<CODE>INPUT</CODE>, <CODE>LABEL</CODE>, <CODE>LEGEND</CODE> and
|
|
<CODE>TEXTAREA</CODE> elements) will be effective when it is available.
|
|
This may improve accessibility of links or form related operations.
|
|
</P>
|
|
|
|
<P>
|
|
But the use of "<CODE>accesskey</CODE>" attribute needs careful consideration.
|
|
</P>
|
|
|
|
<OL class="alpha">
|
|
<LI>In many mobile devices, available keys are limited. It cannot be assumed
|
|
that all keys in "full" keyboards are available.</LI>
|
|
|
|
<LI>Available keys differ among mobile devices. For example,
|
|
cell phones will usually have "<CODE>0</CODE>"-"<CODE>9</CODE>",
|
|
"<CODE>*</CODE>" and "<CODE>#</CODE>" keys, but the same assumption
|
|
cannot be applied for most pagers or mobile game machines.</LI>
|
|
|
|
<LI>There may be some mobile devices that cannot use "<CODE>accesskey</CODE>"
|
|
attribute at all. For example, devices only for voice browsing will not
|
|
use access "keys". Content authors should not rely on access keys for
|
|
navigation.</LI>
|
|
</OL>
|
|
|
|
<H4 class="note">Note for User Agents:</H4>
|
|
|
|
<P class="note">
|
|
User agents should parse and activate access keys specified via
|
|
"<CODE>accesskey</CODE>" attribute whenever possible, but they should
|
|
ignore access keys when those keys are not available.
|
|
</P>
|
|
|
|
|
|
<H2><A name="Validation">4. A Sample <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 <ACRONYM title="Document Type Definition">DTD</ACRONYM> for Mobile Access</A></H2>
|
|
|
|
<P>
|
|
As mentioned in <A href="#Guidelines">section 3</A>,
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict
|
|
will be suitable as a baseline for mobile access.
|
|
This section explains a sample description of
|
|
<ACRONYM title="Document Type Definition">DTD</ACRONYM>, called
|
|
<EM><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile</EM>,
|
|
as a subset of the <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0
|
|
Strict <ACRONYM title="Document Type Definition">DTD</ACRONYM>
|
|
in order to reflect the guidelines described in
|
|
<A href="#Guidelines">section 3</A>.
|
|
</P>
|
|
|
|
<P>
|
|
This <ACRONYM title="Document Type Definition">DTD</ACRONYM> is also
|
|
designed to be a subset of
|
|
<ACRONYM title="International Organization for Standardization">ISO</ACRONYM>/<ACRONYM title="International Electrotechnical Commission">IEC</ACRONYM> 15445,
|
|
<ACRONYM title="also known as">a.k.a.</ACRONYM> <ACRONYM title="International Organization for Standardization">ISO</ACRONYM>-<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> <A href="#ISO-HTML">[ISO-HTML]</A>.
|
|
<ACRONYM title="International Organization for Standardization">ISO</ACRONYM>-<ACRONYM title="HyperText Markup Language">HTML</ACRONYM>
|
|
is a well-defined subset of
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict,
|
|
so conforming to this <ACRONYM title="Document Type Definition">DTD</ACRONYM>
|
|
will ensure interoperability across wide variety of platforms,
|
|
including mobile devices.
|
|
The complete definition of <ACRONYM title="Document Type Definition">DTD</ACRONYM> for <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile is described in the
|
|
<A href="#Appendix">Appendix</A>.
|
|
</P>
|
|
|
|
<P class="warning">
|
|
<EM>Note:</EM>
|
|
At the time of writing this document,
|
|
<A href="#ISO-HTML">[ISO-HTML]</A> is still under work in progress.
|
|
It has not yet established as an International Standard.
|
|
</P>
|
|
|
|
<P>
|
|
The <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile <ACRONYM title="Document Type Definition">DTD</ACRONYM> is provided to help authors creating
|
|
documents following the guidelines described in this document
|
|
(e.g. by validating with an <ACRONYM title="Standard Generalized Markup Language">SGML</ACRONYM> parser like <EM>nsgmls</EM> <A href="#SP">[SP]</A>).
|
|
Not all guidelines can be expressed in the <ACRONYM title="Document Type Definition">DTD</ACRONYM>, but hopefully,
|
|
this <ACRONYM title="Document Type Definition">DTD</ACRONYM> will make it easier to follow these guidelines.
|
|
</P>
|
|
|
|
<P>
|
|
Typically, this <ACRONYM title="Document Type Definition">DTD</ACRONYM> can be
|
|
invoked as follows:
|
|
</P>
|
|
|
|
<PRE>
|
|
<!DOCTYPE HTML SYSTEM "<A href="DTD/html40-mobile.dtd">html40-mobile.dtd</A>">
|
|
<html>
|
|
<head>
|
|
...
|
|
</PRE>
|
|
|
|
<P>
|
|
For example, this <ACRONYM title="Document Type Definition">DTD</ACRONYM>
|
|
excludes <CODE>style</CODE> attribute and event handlers like
|
|
<CODE>onclick</CODE>, so when content authors validate their documents
|
|
against this <ACRONYM title="Document Type Definition">DTD</ACRONYM>,
|
|
those attributes will be flagged as unknown attributes and then authors
|
|
can be aware that those attributes are not recommended.
|
|
If documents are validated against this
|
|
<ACRONYM title="Document Type Definition">DTD</ACRONYM>,
|
|
those documents can be labeled as valid
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict.
|
|
</P>
|
|
|
|
<DIV class="note">
|
|
<P>
|
|
Note. If you use the following DOCTYPE internal subset:
|
|
</P>
|
|
|
|
<PRE>
|
|
<!DOCTYPE HTML SYSTEM "<A href="DTD/html40-mobile.dtd">html40-mobile.dtd</A>" [
|
|
<!ENTITY % Preparation "INCLUDE">
|
|
]>
|
|
<html>
|
|
<head>
|
|
...
|
|
</PRE>
|
|
|
|
<P>
|
|
then you can enforce the strict heading order as required in
|
|
<A href="#ISO-HTML">[ISO-HTML]</A>.
|
|
</P>
|
|
</DIV>
|
|
|
|
<P>
|
|
In any case, ensuring the validity of documents is quite important,
|
|
particularly for mobile access,
|
|
because most mobile devices cannot afford to perform costly error recovery.
|
|
</P>
|
|
|
|
<H2><A name="Remarks">5. Concluding Remarks and Future Directions</A></H2>
|
|
|
|
<P>
|
|
We believe that wireless network services should not be isolated from
|
|
the growing Internet services. This guidelines can be used for this
|
|
purpose.
|
|
It can be referred as recommended guidelines for
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> mobile
|
|
Internet services and
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> browsing
|
|
software for a variety of mobile devices.
|
|
</P>
|
|
|
|
<P>
|
|
Currently the work for the next generation of
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM>
|
|
<A href="#XHTML">[XHTML]</A> is going on,
|
|
which will be a family of modularized document types that will make it easier
|
|
to extend and subset <ACRONYM title="HyperText Markup Language">HTML</ACRONYM>.
|
|
Since mobile device category is one of major targets for <A href="#XHTML">
|
|
[XHTML]</A>, mobile profile(s) and mobile module(s)
|
|
will be defined as part of <A href="#XHTML">[XHTML]</A>.
|
|
</P>
|
|
|
|
<P>
|
|
Note that the effort for converging <A href="#XHTML">[XHTML]</A>
|
|
and the Wireless Markup Language <A href="#WML">[WML]</A>,
|
|
for the Wireless Application Protocol
|
|
(<ACRONYM title="Wireless Application Protocol">WAP</ACRONYM>),
|
|
is currently ongoing between
|
|
the <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> and
|
|
the <A href="http://www.wapforum.org/"><ACRONYM title="Wireless Application Protocol">WAP</ACRONYM> Forum</A>
|
|
[<A href="#WAP-W3C">WAP-W3C</A>, <A href="#WML1.1">WML1.1</A>].
|
|
Hopefully, <A href="#WML">[WML]</A> will be among the family of
|
|
<A href="#XHTML">[XHTML]</A> document types in the future.
|
|
</P>
|
|
|
|
<P>
|
|
The worldwide standard for wireless digital phone networking protocols
|
|
(<ACRONYM title="International Mobile Telecommunication">IMT</ACRONYM>-2000)
|
|
will be established very soon. New services based on
|
|
<ACRONYM title="International Mobile Telecommunication">IMT</ACRONYM>-2000
|
|
standard will start in the early 21st century. The bandwidth of the network is
|
|
expected to be wide enough for <ACRONYM title="Internet Protocol">IP</ACRONYM> connections and Internet-oriented contents.
|
|
</P>
|
|
|
|
<P>
|
|
This implies that <ACRONYM title="HyperText Markup Language">HTML</ACRONYM>
|
|
and related recommendations for mobile Internet will become more and more
|
|
important. This <ACRONYM title="HyperText Markup Language">HTML</ACRONYM>
|
|
4.0 guidelines for mobile access will be a good step towards future
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> modularity for
|
|
mobile phones.
|
|
</P>
|
|
|
|
<H2><A name="References">References</A></H2>
|
|
|
|
<DL>
|
|
<DT><A name="CompactHTML">[CompactHTML]</A></DT>
|
|
<DD>
|
|
"<CITE>Compact <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> for Small Information Appliances</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Note</EM>,
|
|
T. Kamada,
|
|
9 February 1998.<BR>
|
|
Available at <SPAN class="URI"><<A href="http://www.w3.org/TR/1998/NOTE-compactHTML-19980209">http://www.w3.org/TR/1998/NOTE-compactHTML-19980209</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="HTML40">[HTML40]</A></DT>
|
|
<DD>
|
|
"<CITE><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Specification</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Recommendation</EM>,
|
|
D. Raggett, A. Le Hors, I. Jacobs,
|
|
18 December 1997, revised 24 April 1998.<BR>
|
|
Available at <SPAN class="URI"><<A href="http://www.w3.org/TR/1998/REC-html40-19980424">http://www.w3.org/TR/1998/REC-html40-19980424</A>></SPAN><BR>
|
|
"<CITE><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0
|
|
Specification Errata</CITE>" is available at
|
|
<SPAN class="URI"><<A href="http://www.w3.org/MarkUp/html40-updates/REC-html40-19980424-errata.html">http://www.w3.org/MarkUp/html40-updates/REC-html40-19980424-errata.html</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="ISO-HTML">[ISO-HTML]</A></DT>
|
|
<DD>
|
|
"<CITE><ACRONYM title="International Organization for Standardization">ISO</ACRONYM>/<ACRONYM title="International Electrotechnical Commission">IEC</ACRONYM> 15445:1999 Information Technology -- Document Description and Processing Languages -- HyperText Markup Language (<ACRONYM title="HyperText Markup Language">HTML</ACRONYM>)</CITE>",
|
|
R. Price, D. Abrahamson, <EM>work in progress</EM>.<BR>
|
|
Available at <SPAN class="URI"><<A href="http://purl.org/NET/ISO+IEC.15445/15445.html">http://purl.org/NET/ISO+IEC.15445/15445.html</A>></SPAN><BR>
|
|
See also: "<CITE>User's Guide to <ACRONYM title="International Organization for Standardization">ISO</ACRONYM>/<ACRONYM title="International Electrotechnical Commission">IEC</ACRONYM> 15445:1999 HyperText Markup Language (<ACRONYM title="HyperText Markup Language">HTML</ACRONYM>)</CITE>",
|
|
available at
|
|
<SPAN class="URI"><<A href="http://purl.org/NET/ISO+IEC.15445/Users-Guide.html">http://purl.org/NET/ISO+IEC.15445/Users-Guide.html</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="SP">[SP]</A></DT>
|
|
<DD>
|
|
SP is a free, object-oriented toolkit for <ACRONYM title="Standard Generalized Markup Language">SGML</ACRONYM> parsing and entity management written by <A href="mailto:jjc@jclark.com">James Clark</A>.
|
|
Further information is available at
|
|
<SPAN class="URI"><<A href="http://www.jclark.com/sp/index.htm">http://www.jclark.com/sp/index.htm</A>></SPAN>.
|
|
</DD>
|
|
|
|
<DT><A name="WAI-WEBCONTENT">[WAI-WEBCONTENT]</A></DT>
|
|
<DD>
|
|
"<CITE>Web Content Accessibility Guidelines</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Working Draft</EM>,
|
|
W. Chisholm, G. Vanderheiden, I. Jacobs,
|
|
<EM>work in progress</EM>.<BR>
|
|
See also: "<CITE>Techniques for Web Content Accessibility Guidelines</CITE>"<BR>
|
|
The latest version of these documents can be available from
|
|
<SPAN class="URI"><<A href="http://www.w3.org/WAI/#Resources">http://www.w3.org/WAI/#Resources</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="WAI-USERAGENT">[WAI-USERAGENT]</A></DT>
|
|
<DD>
|
|
"<CITE>User Agent Accessibility Guidelines</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Working Draft</EM>,
|
|
J. Gunderson, I. Jacobs,
|
|
<EM>work in progress</EM>.<BR>
|
|
The latest version of this document can be available from
|
|
<SPAN class="URI"><<A href="http://www.w3.org/WAI/#Resources">http://www.w3.org/WAI/#Resources</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="WAP-W3C">[WAP-W3C]</A></DT>
|
|
<DD>
|
|
"<CITE><ACRONYM title="Wireless Application Protocol">WAP</ACRONYM> Forum - <ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Cooperation White Paper</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Note</EM>,
|
|
J. Hjelm, B. Martin, P. King,
|
|
30 October 1998.<BR>
|
|
Available at <SPAN class="URI"><<A href="http://www.w3.org/TR/NOTE-WAP">http://www.w3.org/TR/NOTE-WAP</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="WML">[WML]</A></DT>
|
|
<DD>
|
|
"<CITE>Wireless Markup Language Specification</CITE>",
|
|
<ACRONYM title="Wireless Application Protocol">WAP</ACRONYM> Forum,
|
|
30 April 1998.<BR>
|
|
Available at <SPAN class="URI"><<A type="application/pdf" href="http://www.wapforum.org/docs/technical/wml-30-apr-98.pdf">http://www.wapforum.org/docs/technical/wml-30-apr-98.pdf</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="WML1.1">[WML1.1]</A></DT>
|
|
<DD>
|
|
"<CITE>Wireless Markup Language Specification Version 1.1</CITE>",
|
|
<EM>proposed</EM>,
|
|
<ACRONYM title="Wireless Application Protocol">WAP</ACRONYM> Forum,
|
|
3 February 1999.<BR>
|
|
Available at
|
|
<SPAN class="URI"><<A type="application/pdf" href="http://www.wapforum.org/docs/technical1.1/WML-3-Feb-1999.pdf">http://www.wapforum.org/docs/technical1.1/WML-3-Feb-1999.pdf</A>></SPAN>
|
|
</DD>
|
|
|
|
<DT><A name="XHTML">[XHTML]</A></DT>
|
|
<DD>
|
|
"<CITE><ACRONYM title="Extensible HyperText Markup Language">XHTML</ACRONYM> 1.0: The Extensible HyperText Markup Language - A Reformulation of <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 in <ACRONYM title="Extensible Markup Language">XML</ACRONYM> 1.0</CITE>",
|
|
<EM><ACRONYM title="World Wide Web Consortium">W3C</ACRONYM> Working Draft</EM>,
|
|
Steven Pemberton <EM>et al.</EM>,
|
|
<EM>work in progress</EM>.<BR>
|
|
Available at <SPAN class="URI"><<A href="http://www.w3.org/TR/WD-html-in-xml">http://www.w3.org/TR/WD-html-in-xml</A>></SPAN>
|
|
</DD>
|
|
</DL>
|
|
|
|
|
|
<H2><A name="Appendix">Appendix <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile <ACRONYM title="Document Type Definition">DTD</ACRONYM></A></H2>
|
|
|
|
<H3><A name="Catalog">Sample <ACRONYM title="Standard Generalized Markup Language">SGML</ACRONYM> catalog</A></H3>
|
|
|
|
<DIV class="note">
|
|
<P>
|
|
<EM>Note.</EM>
|
|
The <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Mobile <ACRONYM title="Document Type Definition">DTD</ACRONYM> is a complete subset of the <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Strict <ACRONYM title="Document Type Definition">DTD</ACRONYM>,
|
|
and if you use the following <ACRONYM title="Document Type Definition">DTD</ACRONYM>:
|
|
</P>
|
|
|
|
<PRE>
|
|
<!ENTITY % HTML.Strict "INCLUDE">
|
|
<!ENTITY % Mobile.dtd SYSTEM "<A href="DTD/html40-mobile.dtd">html40-mobile.dtd</A>">
|
|
%Mobile.dtd;
|
|
</PRE>
|
|
|
|
<P>
|
|
then you can get the same definition as the
|
|
<ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0
|
|
Strict <ACRONYM title="Document Type Definition">DTD</ACRONYM>,
|
|
as amended by the <A href="http://www.w3.org/MarkUp/html40-updates/REC-html40-19980424-errata.html"><ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0 Specification Errata</A>.
|
|
</P>
|
|
|
|
<P>
|
|
The following <A href="DTD/mobile.soc">sample
|
|
<ACRONYM title="Standard Generalized Markup Language">SGML</ACRONYM> catalog</A>
|
|
uses the above <ACRONYM title="Document Type Definition">DTD</ACRONYM> to invoke
|
|
the <ACRONYM title="HyperText Markup Language">HTML</ACRONYM> 4.0
|
|
Strict <ACRONYM title="Document Type Definition">DTD</ACRONYM>.
|
|
Typically, the Mobile <ACRONYM title="Document Type Definition">DTD</ACRONYM>
|
|
itself will be invoked by a system identifier, so it is not included in this catalog.
|
|
</P>
|
|
</DIV>
|
|
|
|
<DIV class="dtd">
|
|
<PRE>
|
|
-- HTML 4.0 Strict DTD, as amended by the HTML 4.0 Specification Errata --
|
|
PUBLIC "-//W3C//DTD HTML 4.0//EN" <A href="DTD/html40-strict.dtd">html40-strict.dtd</A>
|
|
|
|
-- entity sets for HTML 4.0 --
|
|
PUBLIC "-//W3C//ENTITIES Latin1//EN//HTML" <A href="DTD/HTMLlat1.ent">HTMLlat1.ent</A>
|
|
PUBLIC "-//W3C//ENTITIES Special//EN//HTML" <A href="DTD/HTMLspecial.ent">HTMLspecial.ent</A>
|
|
PUBLIC "-//W3C//ENTITIES Symbols//EN//HTML" <A href="DTD/HTMLsymbol.ent">HTMLsymbol.ent</A>
|
|
|
|
SGMLDECL <A href="DTD/html40.decl">html40.decl</A>
|
|
DOCTYPE html <A href="DTD/html40-strict.dtd">html40-strict.dtd</A>
|
|
</PRE>
|
|
</DIV>
|
|
|
|
<H3><A name="DTD">Document Type Definition</A></H3>
|
|
|
|
<DIV class="dtd">
|
|
<PRE>
|
|
<!--
|
|
This is HTML 4.0 Mobile DTD, which excludes elements and attributes
|
|
that are difficult to use in mobile devices.
|
|
|
|
HTML 4.0 Mobile DTD is designed to be a complete subset of the HTML 4.0
|
|
Strict DTD, and ISO/IEC 15445, a.k.a. ISO-HTML. ISO-HTML is also
|
|
a subset of the HTML 4.0 Strict DTD. This DTD takes into account
|
|
the errata for the HTML 4.0 Specification.
|
|
|
|
NOTE: ISO/IEC 15445 is still work in progress. It is not yet
|
|
an International Standard and it is not appropriate to cite it
|
|
other than as work in progress.
|
|
|
|
HTML 4.0 includes mechanisms for style sheets, scripting,
|
|
embedding objects, improved support for right to left and mixed
|
|
direction text, and enhancements to forms for improved
|
|
accessibility for people with disabilities.
|
|
|
|
Draft: $ Date: 1999/03/15 03:20:05 $
|
|
|
|
Author:
|
|
Masayasu Ishikawa <mimasa@w3.org>
|
|
|
|
Authors of the original HTML 4.0 Strict DTD:
|
|
Dave Raggett <dsr@w3.org>
|
|
Arnaud Le Hors <lehors@w3.org>
|
|
Ian Jacobs <ij@w3.org>
|
|
|
|
Further information about HTML 4.0 is available at:
|
|
|
|
http://www.w3.org/TR/REC-html40
|
|
-->
|
|
<!--
|
|
Typical usage:
|
|
|
|
<!DOCTYPE HTML SYSTEM "html40-mobile.dtd">
|
|
<html>
|
|
<head>
|
|
...
|
|
</head>
|
|
<body>
|
|
...
|
|
</body>
|
|
</html>
|
|
|
|
As this DTD is intended to be used only for preparing documents,
|
|
FPI for this DTD is not defined. Use system identifier when you
|
|
invoke this DTD, and the FPI for the Strict DTD should be used
|
|
when you publish the documents conforming to this DTD.
|
|
|
|
The FPI for the HTML 4.0 Strict DTD is:
|
|
|
|
"-//W3C//DTD HTML 4.0//EN"
|
|
|
|
and its URI is:
|
|
|
|
http://www.w3.org/TR/REC-html40/strict.dtd
|
|
|
|
The following URIs are supported in relation to HTML 4.0.
|
|
These URIs point to the latest version of each file.
|
|
|
|
"http://www.w3.org/TR/REC-html40/strict.dtd" (Strict DTD)
|
|
"http://www.w3.org/TR/REC-html40/loose.dtd" (Transitional DTD)
|
|
"http://www.w3.org/TR/REC-html40/frameset.dtd" (Frameset DTD)
|
|
"http://www.w3.org/TR/REC-html40/HTMLlat1.ent" (Latin-1 entities)
|
|
"http://www.w3.org/TR/REC-html40/HTMLsymbol.ent" (Symbol entities)
|
|
"http://www.w3.org/TR/REC-html40/HTMLspecial.ent" (Special entities)
|
|
|
|
-->
|
|
|
|
<!-- Feature Switch for Mobile documents -->
|
|
|
|
<!ENTITY % HTML.Strict "IGNORE">
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % HTML.Mobile "IGNORE">
|
|
]]>
|
|
<!ENTITY % HTML.Mobile "INCLUDE">
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!-- If the Preparation parameter entity is set to INCLUDE, it allows
|
|
you to enforce the strict heading order, just like the document
|
|
preparation process of ISO-HTML. -->
|
|
<!ENTITY % Preparation "IGNORE">
|
|
|
|
<!-- This definition generates the inverse entity
|
|
NoPreparation which is internal to the DTD. -->
|
|
<![ %Preparation; [
|
|
<!ENTITY % NoPreparation "IGNORE" -- Inverse of Preparation = INCLUDE -->
|
|
]]>
|
|
<!ENTITY % NoPreparation "INCLUDE" -- Inverse of Preparation = IGNORE -->
|
|
]]>
|
|
|
|
<!-- In ISO-HTML, horizontal tab character is deprecated. -->
|
|
<![ %HTML.Mobile; [
|
|
<!-- SHORTREF mapping for the tab character -->
|
|
<!-- Use of the tab character is deprecated. However, to facilitate
|
|
the preparation of conforming documents by authors who use it,
|
|
the tab character is tolerated and is mapped into a single space. -->
|
|
<!ENTITY nontab " " >
|
|
<!SHORTREF tabmap " " nontab >
|
|
<!USEMAP tabmap HTML >
|
|
]]>
|
|
|
|
<!--================== Imported Names ====================================-->
|
|
|
|
<!ENTITY % ContentType "CDATA"
|
|
-- media type, as per [RFC2045]
|
|
-->
|
|
|
|
<!ENTITY % ContentTypes "CDATA"
|
|
-- comma-separated list of media types, as per [RFC2045]
|
|
-->
|
|
|
|
<!ENTITY % Charset "CDATA"
|
|
-- a character encoding, as per [RFC2045]
|
|
-->
|
|
|
|
<!ENTITY % Charsets "CDATA"
|
|
-- a space separated list of character encodings, as per [RFC2045]
|
|
-->
|
|
|
|
<!ENTITY % LanguageCode "NAME"
|
|
-- a language code, as per [RFC1766]
|
|
-->
|
|
|
|
<!ENTITY % Character "CDATA"
|
|
-- a single character from [ISO10646]
|
|
-->
|
|
|
|
<!ENTITY % LinkTypes "CDATA"
|
|
-- space-separated list of link types
|
|
-->
|
|
|
|
<!ENTITY % MediaDesc "CDATA"
|
|
-- single or comma-separated list of media descriptors
|
|
-->
|
|
|
|
<!ENTITY % URI "CDATA"
|
|
-- a Uniform Resource Identifier, see [RFC2396]
|
|
-->
|
|
|
|
<!-- Added to incorporate an erratum for HTML 4.0; taken from [XHTML] -->
|
|
<!ENTITY % UriList "CDATA"
|
|
-- a space separated list of Uniform Resource Identifiers
|
|
-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % Datetime "CDATA" -- date and time information. ISO date format -->
|
|
|
|
<!ENTITY % Script "CDATA" -- script expression -->
|
|
]]>
|
|
|
|
<!ENTITY % StyleSheet "CDATA" -- style sheet data -->
|
|
|
|
<!ENTITY % Text "CDATA">
|
|
|
|
<!-- Parameter Entities -->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % head.misc "SCRIPT|STYLE|META|LINK|OBJECT"
|
|
-- repeatable head elements -->
|
|
]]>
|
|
|
|
<!-- In ISO-HTML, OBJECT is not allowed in HEAD. -->
|
|
<!ENTITY % head.misc "STYLE|META|LINK" -- repeatable head elements -->
|
|
|
|
<!ENTITY % heading "H1|H2|H3|H4|H5|H6">
|
|
|
|
<!ENTITY % list "UL | OL">
|
|
|
|
<!ENTITY % preformatted "PRE">
|
|
|
|
|
|
<!--================ Character mnemonic entities =========================-->
|
|
|
|
<!ENTITY % HTMLlat1 PUBLIC
|
|
"-//W3C//ENTITIES Latin1//EN//HTML"
|
|
"http://www.w3.org/TR/REC-html40/HTMLlat1.ent">
|
|
%HTMLlat1;
|
|
|
|
<!ENTITY % HTMLsymbol PUBLIC
|
|
"-//W3C//ENTITIES Symbols//EN//HTML"
|
|
"http://www.w3.org/TR/REC-html40/HTMLsymbol.ent">
|
|
%HTMLsymbol;
|
|
|
|
<!ENTITY % HTMLspecial PUBLIC
|
|
"-//W3C//ENTITIES Special//EN//HTML"
|
|
"http://www.w3.org/TR/REC-html40/HTMLspecial.ent">
|
|
%HTMLspecial;
|
|
|
|
<!--=================== Generic Attributes ===============================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % coreattrs
|
|
"id ID #IMPLIED -- document-wide unique id --
|
|
class CDATA #IMPLIED -- space separated list of classes --
|
|
style %StyleSheet; #IMPLIED -- associated style info --
|
|
title %Text; #IMPLIED -- advisory title/amplification --"
|
|
>
|
|
]]>
|
|
|
|
<!-- Style attribute is excluded from ISO-HTML -->
|
|
<!ENTITY % coreattrs
|
|
"id ID #IMPLIED -- document-wide unique id --
|
|
class CDATA #IMPLIED -- space separated list of classes --
|
|
title %Text; #IMPLIED -- advisory title/amplification --"
|
|
>
|
|
|
|
<!ENTITY % i18n
|
|
"lang %LanguageCode; #IMPLIED -- language code --
|
|
dir (ltr|rtl) #IMPLIED -- direction for weak/neutral text --"
|
|
>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % events
|
|
"onclick %Script; #IMPLIED -- a pointer button was clicked --
|
|
ondblclick %Script; #IMPLIED -- a pointer button was double clicked--
|
|
onmousedown %Script; #IMPLIED -- a pointer button was pressed down --
|
|
onmouseup %Script; #IMPLIED -- a pointer button was released --
|
|
onmouseover %Script; #IMPLIED -- a pointer was moved onto --
|
|
onmousemove %Script; #IMPLIED -- a pointer was moved within --
|
|
onmouseout %Script; #IMPLIED -- a pointer was moved away --
|
|
onkeypress %Script; #IMPLIED -- a key was pressed and released --
|
|
onkeydown %Script; #IMPLIED -- a key was pressed down --
|
|
onkeyup %Script; #IMPLIED -- a key was released --"
|
|
>
|
|
]]>
|
|
|
|
|
|
<!-- Reserved Feature Switch -->
|
|
<!ENTITY % HTML.Reserved "IGNORE">
|
|
|
|
<!-- The following attributes are reserved for possible future use -->
|
|
<![ %HTML.Reserved; [
|
|
<!ENTITY % reserved
|
|
"datasrc %URI; #IMPLIED -- a single or tabular Data Source --
|
|
datafld CDATA #IMPLIED -- the property or column name --
|
|
dataformatas (plaintext|html) plaintext -- text or html --"
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % reserved "">
|
|
|
|
<!ENTITY % attrs "%coreattrs; %i18n; %events;">
|
|
]]>
|
|
|
|
<!ENTITY % attrs "%coreattrs; %i18n;">
|
|
|
|
<!--=================== Text Markup ======================================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % fontstyle
|
|
"TT | I | B | BIG | SMALL">
|
|
]]>
|
|
|
|
<!ENTITY % phrase "EM | STRONG | DFN | CODE |
|
|
SAMP | KBD | VAR | CITE | ABBR | ACRONYM" >
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % special
|
|
"A | IMG | OBJECT | BR | SCRIPT | MAP | Q | SUB | SUP | SPAN | BDO">
|
|
]]>
|
|
|
|
<!ENTITY % special
|
|
"A | IMG | OBJECT | BR | MAP | Q | SPAN | BDO">
|
|
|
|
<!ENTITY % formctrl "INPUT | SELECT | TEXTAREA | LABEL | BUTTON">
|
|
|
|
<!-- %inline; covers inline or "text-level" elements -->
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % inline "#PCDATA | %fontstyle; | %phrase; | %special; | %formctrl;">
|
|
]]>
|
|
<!-- In ISO-HTML, form controls can only be appeared in FORM element -->
|
|
<!ENTITY % inline "#PCDATA | %phrase; | %special;">
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT (%fontstyle;|%phrase;) - - (%inline;)*>
|
|
<!ATTLIST (%fontstyle;|%phrase;)
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT (%phrase;) - - (%inline;)+>
|
|
<!ATTLIST (%phrase;)
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT (SUB|SUP) - - (%inline;)* -- subscript, superscript -->
|
|
<!ATTLIST (SUB|SUP)
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT SPAN - - (%inline;)* -- generic language/style container -->
|
|
<!ATTLIST SPAN
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT SPAN - - (%inline;)+ -- generic language/style container -->
|
|
<!ATTLIST SPAN
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT BDO - - (%inline;)* -- I18N BiDi over-ride -->
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT BDO - - (%inline;)+ -- I18N BiDi over-ride -->
|
|
]]>
|
|
<!ATTLIST BDO
|
|
-- %coreattrs; id, class, style, title --
|
|
%coreattrs; -- id, class, title --
|
|
lang %LanguageCode; #IMPLIED -- language code --
|
|
dir (ltr|rtl) #REQUIRED -- directionality --
|
|
>
|
|
|
|
|
|
<!ELEMENT BR - O EMPTY -- forced line break -->
|
|
<!ATTLIST BR
|
|
-- %coreattrs; id, class, style, title --
|
|
%coreattrs; -- id, class, title --
|
|
>
|
|
|
|
<!--================== HTML content models ===============================-->
|
|
|
|
<!--
|
|
HTML has two basic content models:
|
|
|
|
%inline; character level elements and text strings
|
|
%block; block-like elements e.g. paragraphs and lists
|
|
-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % block
|
|
"P | %heading; | %list; | %preformatted; | DL | DIV | NOSCRIPT |
|
|
BLOCKQUOTE | FORM | HR | TABLE | FIELDSET | ADDRESS">
|
|
]]>
|
|
|
|
<!-- The content of %block; is changed in accordance with ISO-HTML -->
|
|
<!-- FIELDSET is not part of %block; in HTML 4.0 Mobile -->
|
|
<!ENTITY % block
|
|
"P | %list; | %preformatted; | DL | DIV |
|
|
BLOCKQUOTE | FORM | HR">
|
|
|
|
<!ENTITY % flow "%block; | %inline;">
|
|
|
|
<!-- The following definitions are taken from ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!-- Elements that may appear in a form, section or table -->
|
|
<!-- In HTML 4.0 Mobile, FIELDSET is only allowed in a form -->
|
|
<!ENTITY % form.content "(%block; | %inline; | %formctrl; |
|
|
FIELDSET | ADDRESS)+" >
|
|
<!ENTITY % section.content "(%block; | %inline; | ADDRESS)+" >
|
|
]]>
|
|
|
|
<!--=================== Document Body ====================================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT BODY O O (%block;|SCRIPT)+ +(INS|DEL) -- document body -->
|
|
<!ATTLIST BODY
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
onload %Script; #IMPLIED -- the document has been loaded --
|
|
onunload %Script; #IMPLIED -- the document has been removed --
|
|
>
|
|
]]>
|
|
|
|
<!-- In ISO-HTML, start tag of BODY element cannot be omitted -->
|
|
<![ %HTML.Mobile; [
|
|
<!-- The following marked section is for preparation only. -->
|
|
<![ %Preparation; [
|
|
<!ELEMENT BODY - O ((%block;)*,(H1,DIV1)*) >
|
|
]]>
|
|
<![ %NoPreparation; [
|
|
<!ELEMENT BODY - O (%block;|%heading;)+ -- document body -->
|
|
]]>
|
|
<!ATTLIST BODY
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT ADDRESS - - (%inline;)* -- information on author -->
|
|
<!ATTLIST ADDRESS
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of ADDRESS element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT ADDRESS - - (%inline;)+ -(IMG|MAP) -- information on author -->
|
|
<!ATTLIST ADDRESS
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT DIV - - (%flow;)* -- generic language/style container -->
|
|
<!ATTLIST DIV
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of DIV element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT DIV - - %section.content; -- generic language/style container -->
|
|
<!ATTLIST DIV
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--================== The Anchor Element ================================-->
|
|
|
|
<!ENTITY % Shape "(rect|circle|poly|default)">
|
|
<!ENTITY % Coords "CDATA" -- comma separated list of lengths -->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT A - - (%inline;)* -(A) -- anchor -->
|
|
<!ATTLIST A
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
charset %Charset; #IMPLIED -- char encoding of linked resource --
|
|
type %ContentType; #IMPLIED -- advisory content type --
|
|
name CDATA #IMPLIED -- named link end --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
hreflang %LanguageCode; #IMPLIED -- language code --
|
|
rel %LinkTypes; #IMPLIED -- forward link types --
|
|
rev %LinkTypes; #IMPLIED -- reverse link types --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
shape %Shape; rect -- for use with client-side image maps --
|
|
coords %Coords; #IMPLIED -- for use with client-side image maps --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT A - - (%inline;)* -(A) -- anchor -->
|
|
<!ATTLIST A
|
|
%attrs; -- %coreattrs, %i18n --
|
|
charset %Charset; #IMPLIED -- char encoding of linked resource --
|
|
type %ContentType; #IMPLIED -- advisory content type --
|
|
name CDATA #IMPLIED -- named link end --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
hreflang %LanguageCode; #IMPLIED -- language code --
|
|
rel %LinkTypes; #IMPLIED -- forward link types --
|
|
rev %LinkTypes; #IMPLIED -- reverse link types --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
>
|
|
]]>
|
|
|
|
<!--================== Client-side image maps ============================-->
|
|
|
|
<!-- These can be placed in the same document or grouped in a
|
|
separate document although this isn't yet widely supported -->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT MAP - - ((%block;)+ | AREA+) -- client-side image map -->
|
|
<!ATTLIST MAP
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
name CDATA #REQUIRED -- for reference by usemap --
|
|
>
|
|
]]>
|
|
<!-- In ISO-HTML, MAP element can only include AREA elements -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT MAP - - (AREA)+ -- client-side image map -->
|
|
<!ATTLIST MAP
|
|
%attrs; -- %coreattrs, %i18n --
|
|
name CDATA #REQUIRED -- for reference by usemap --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT AREA - O EMPTY -- client-side image map area -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST AREA
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
shape %Shape; rect -- controls interpretation of coords --
|
|
coords %Coords; #IMPLIED -- comma separated list of lengths --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
nohref (nohref) #IMPLIED -- this region has no action --
|
|
alt %Text; #REQUIRED -- short description --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST AREA
|
|
%attrs; -- %coreattrs, %i18n --
|
|
shape %Shape; rect -- controls interpretation of coords --
|
|
coords %Coords; #IMPLIED -- comma separated list of lengths --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
nohref (nohref) #IMPLIED -- this region has no action --
|
|
alt %Text; #REQUIRED -- short description --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<!--================== The LINK Element ==================================-->
|
|
|
|
<!--
|
|
Relationship values can be used in principle:
|
|
|
|
a) for document specific toolbars/menus when used
|
|
with the LINK element in document head e.g.
|
|
start, contents, previous, next, index, end, help
|
|
b) to link to a separate style sheet (rel=stylesheet)
|
|
c) to make a link to a script (rel=script)
|
|
d) by stylesheets to control how collections of
|
|
html nodes are rendered into printed documents
|
|
e) to make a link to a printable version of this document
|
|
e.g. a postscript or pdf version (rel=alternate media=print)
|
|
-->
|
|
|
|
<!ELEMENT LINK - O EMPTY -- a media-independent link -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST LINK
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
charset %Charset; #IMPLIED -- char encoding of linked resource --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
hreflang %LanguageCode; #IMPLIED -- language code --
|
|
type %ContentType; #IMPLIED -- advisory content type --
|
|
rel %LinkTypes; #IMPLIED -- forward link types --
|
|
rev %LinkTypes; #IMPLIED -- reverse link types --
|
|
media %MediaDesc; #IMPLIED -- for rendering on these media --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST LINK
|
|
%attrs; -- %coreattrs, %i18n --
|
|
charset %Charset; #IMPLIED -- char encoding of linked resource --
|
|
href %URI; #IMPLIED -- URI for linked resource --
|
|
hreflang %LanguageCode; #IMPLIED -- language code --
|
|
type %ContentType; #IMPLIED -- advisory content type --
|
|
rel %LinkTypes; #IMPLIED -- forward link types --
|
|
rev %LinkTypes; #IMPLIED -- reverse link types --
|
|
media %MediaDesc; #IMPLIED -- for rendering on these media --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Images ===========================================-->
|
|
|
|
<!-- Length defined in strict DTD for cellpadding/cellspacing -->
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % Length "CDATA" -- nn for pixels or nn% for percentage length -->
|
|
]]>
|
|
<!ENTITY % MultiLength "CDATA" -- pixel, percentage, or relative -->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % MultiLengths "CDATA" -- comma-separated list of MultiLength -->
|
|
|
|
<!ENTITY % Pixels "CDATA" -- integer representing length in pixels -->
|
|
]]>
|
|
|
|
<!-- To avoid problems with text-only UAs as well as
|
|
to make image content understandable and navigable
|
|
to users of non-visual UAs, you need to provide
|
|
a description with ALT, and avoid server-side image maps -->
|
|
|
|
<!ELEMENT IMG - O EMPTY -- Embedded image -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST IMG
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
src %URI; #REQUIRED -- URI of image to embed --
|
|
alt %Text; #REQUIRED -- short description --
|
|
longdesc %URI; #IMPLIED -- link to long description
|
|
(complements alt) --
|
|
height %Length; #IMPLIED -- override height --
|
|
width %Length; #IMPLIED -- override width --
|
|
usemap %URI; #IMPLIED -- use client-side image map --
|
|
ismap (ismap) #IMPLIED -- use server-side image map --
|
|
>
|
|
]]>
|
|
<!-- In ISO-HTML, height and width attributes are not supported -->
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST IMG
|
|
%attrs; -- %coreattrs, %i18n --
|
|
src %URI; #REQUIRED -- URI of image to embed --
|
|
alt %Text; #REQUIRED -- short description --
|
|
longdesc %URI; #IMPLIED -- link to long description
|
|
(complements alt) --
|
|
usemap %URI; #IMPLIED -- use client-side image map --
|
|
>
|
|
]]>
|
|
|
|
<!-- USEMAP points to a MAP element which may be in this document
|
|
or an external document, although the latter is not widely supported -->
|
|
|
|
<!--==================== OBJECT ======================================-->
|
|
<!--
|
|
OBJECT is used to embed objects as part of HTML pages
|
|
PARAM elements should precede other content. SGML mixed content
|
|
model technicality precludes specifying this formally ...
|
|
-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT OBJECT - - (PARAM | %flow;)*
|
|
-- generic embedded object -->
|
|
<!ATTLIST OBJECT
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
declare (declare) #IMPLIED -- declare but don't instantiate flag --
|
|
classid %URI; #IMPLIED -- identifies an implementation --
|
|
codebase %URI; #IMPLIED -- base URI for classid, data, archive--
|
|
data %URI; #IMPLIED -- reference to object's data --
|
|
type %ContentType; #IMPLIED -- content type for data --
|
|
codetype %ContentType; #IMPLIED -- content type for code --
|
|
archive %UriList; #IMPLIED -- space separated archive list --
|
|
standby %Text; #IMPLIED -- message to show while loading --
|
|
height %Length; #IMPLIED -- override height --
|
|
width %Length; #IMPLIED -- override width --
|
|
usemap %URI; #IMPLIED -- use client-side image map --
|
|
name CDATA #IMPLIED -- submit as part of form --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT OBJECT - - (PARAM | %section.content;)*
|
|
-- generic embedded object -->
|
|
<!ATTLIST OBJECT
|
|
%attrs; -- %coreattrs, %i18n --
|
|
declare (declare) #IMPLIED -- declare but don't instantiate flag --
|
|
classid %URI; #IMPLIED -- identifies an implementation --
|
|
codebase %URI; #IMPLIED -- base URI for classid, data, archive--
|
|
data %URI; #IMPLIED -- reference to object's data --
|
|
type %ContentType; #IMPLIED -- content type for data --
|
|
codetype %ContentType; #IMPLIED -- content type for code --
|
|
standby %Text; #IMPLIED -- message to show while loading --
|
|
usemap %URI; #IMPLIED -- use client-side image map --
|
|
name CDATA #IMPLIED -- submit as part of form --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT PARAM - O EMPTY -- named property value -->
|
|
<!ATTLIST PARAM
|
|
id ID #IMPLIED -- document-wide unique id --
|
|
name CDATA #REQUIRED -- property name --
|
|
value CDATA #IMPLIED -- property value --
|
|
valuetype (DATA|REF|OBJECT) DATA -- How to interpret value --
|
|
type %ContentType; #IMPLIED -- content type for value
|
|
when valuetype=ref --
|
|
>
|
|
|
|
<!--=================== Horizontal Rule ==================================-->
|
|
<!-- lang and dir attributes are added to incorporate an erratum
|
|
for HTML 4.0. -->
|
|
|
|
<!ELEMENT HR - O EMPTY -- horizontal rule -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST HR
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST HR
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Paragraphs =======================================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT P - O (%inline;)* -- paragraph -->
|
|
<!ATTLIST P
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT P - O (%inline;)+ -- paragraph -->
|
|
<!ATTLIST P
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Headings =========================================-->
|
|
|
|
<!--
|
|
There are six levels of headings from H1 (the most important)
|
|
to H6 (the least important).
|
|
-->
|
|
|
|
<!--
|
|
ISO-HTML requires very strict heading order. If you want to
|
|
make sure that the document is conforming to this requirement,
|
|
set the Preparation parameter entity to INCLUDE; it allows you
|
|
to enforce the strict heading order by introducing "pseudo"
|
|
elements DIV1 through DIV6. Those "pseudo" elements shall not
|
|
be appeared in valid HTML 4.0 Strict documents.
|
|
|
|
The following comments are normative requirements of ISO-HTML.
|
|
|
|
The H1 element shall not be followed by an H3, H4, H5 or H6 element
|
|
without an intervening H2 element.
|
|
|
|
The H2 element shall not be followed by an H4, H5 or H6 element
|
|
without an intervening H3 element.
|
|
|
|
The H3 element shall not be followed by an H5 or H6 element without
|
|
an intervening H4 element.
|
|
|
|
The H4 element shall not be followed by an H6 element without an
|
|
intervening H5 element.
|
|
|
|
An H2 element shall be preceded by an H1 element.
|
|
|
|
An H3 element shall be preceded by an H2 element.
|
|
|
|
An H4 element shall be preceded by an H3 element.
|
|
|
|
An H5 element shall be preceded by an H4 element.
|
|
|
|
An H6 element shall be preceded by an H5 element.
|
|
-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT (%heading;) - - (%inline;)* -- heading -->
|
|
<!ATTLIST (%heading;)
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT (%heading;) - - (%inline;)+ -- heading -->
|
|
<!-- The following marked section is for preparation only. -->
|
|
<![ %Preparation; [
|
|
<!ELEMENT DIV1 O O ((%block;)*, (H2,DIV2)* ) >
|
|
<!ELEMENT DIV2 O O ((%block;)*, (H3,DIV3)* ) >
|
|
<!ELEMENT DIV3 O O ((%block;)*, (H4,DIV4)* ) >
|
|
<!ELEMENT DIV4 O O ((%block;)*, (H5,DIV5)* ) >
|
|
<!ELEMENT DIV5 O O ((%block;)*, (H6,DIV6)* ) >
|
|
<!ELEMENT DIV6 O O ((%block;)*) >
|
|
]]>
|
|
<!ATTLIST (%heading;)
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Preformatted Text ================================-->
|
|
|
|
<!-- excludes markup for images and changes in font size -->
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % pre.exclusion "IMG|OBJECT|BIG|SMALL|SUB|SUP">
|
|
]]>
|
|
|
|
<!-- In ISO-HTML, MAP shall not be appeared in PRE element -->
|
|
<!ENTITY % pre.exclusion "IMG|OBJECT|MAP">
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT PRE - - (%inline;)* -(%pre.exclusion;) -- preformatted text -->
|
|
<!ATTLIST PRE
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT PRE - - (%inline;)+ -(%pre.exclusion;) -- preformatted text -->
|
|
<!ATTLIST PRE
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--===================== Inline Quotes ==================================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT Q - - (%inline;)* -- short inline quotation -->
|
|
<!ATTLIST Q
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
cite %URI; #IMPLIED -- URI for source document or msg --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT Q - - (%inline;)+ -- short inline quotation -->
|
|
<!ATTLIST Q
|
|
%attrs; -- %coreattrs, %i18n --
|
|
cite %URI; #IMPLIED -- URI for source document or msg --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Block-like Quotes ================================-->
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT BLOCKQUOTE - - (%block;|SCRIPT)+ -- long quotation -->
|
|
<!ATTLIST BLOCKQUOTE
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
cite %URI; #IMPLIED -- URI for source document or msg --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT BLOCKQUOTE - - (%block;)+ -- long quotation -->
|
|
<!ATTLIST BLOCKQUOTE
|
|
%attrs; -- %coreattrs, %i18n --
|
|
cite %URI; #IMPLIED -- URI for source document or msg --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Inserted/Deleted Text ============================-->
|
|
|
|
|
|
<!-- INS/DEL are handled by inclusion on BODY -->
|
|
<!-- INS/DEL are not supported in HTML 4.0 Mobile -->
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT (INS|DEL) - - (%flow;)* -- inserted text, deleted text -->
|
|
<!ATTLIST (INS|DEL)
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
cite %URI; #IMPLIED -- info on reason for change --
|
|
datetime %Datetime; #IMPLIED -- date and time of change --
|
|
>
|
|
]]>
|
|
|
|
<!--=================== Lists ============================================-->
|
|
|
|
<!-- definition lists - DT for term, DD for its definition -->
|
|
|
|
<!ELEMENT DL - - (DT|DD)+ -- definition list -->
|
|
<!ATTLIST DL
|
|
-- %attrs; %coreattrs, %i18n, %events --
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT DT - O (%inline;)* -- definition term -->
|
|
<!ELEMENT DD - O (%flow;)* -- definition description -->
|
|
<!ATTLIST (DT|DD)
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT DT - O (%inline;)+ -- definition term -->
|
|
<!ELEMENT DD - O %section.content; -(ADDRESS) -- definition description -->
|
|
<!ATTLIST (DT|DD)
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
|
|
<!ELEMENT OL - - (LI)+ -- ordered list -->
|
|
<!ATTLIST OL
|
|
-- %attrs; %coreattrs, %i18n, %events --
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
|
|
<!-- Unordered Lists (UL) bullet styles -->
|
|
<!ELEMENT UL - - (LI)+ -- unordered list -->
|
|
<!ATTLIST UL
|
|
-- %attrs; %coreattrs, %i18n, %events --
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT LI - O (%flow;)* -- list item -->
|
|
<!ATTLIST LI
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT LI - O (%flow;)+ -- list item -->
|
|
<!ATTLIST LI
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<!--================ Forms ===============================================-->
|
|
<![ %HTML.Strict; [
|
|
<!-- accept is added to incorporate an erratum for HTML 4.0 -->
|
|
<!ELEMENT FORM - - (%block;|SCRIPT)+ -(FORM) -- interactive form -->
|
|
<!ATTLIST FORM
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
action %URI; #REQUIRED -- server-side form handler --
|
|
method (GET|POST) GET -- HTTP method used to submit the form--
|
|
enctype %ContentType; "application/x-www-form-urlencoded"
|
|
onsubmit %Script; #IMPLIED -- the form was submitted --
|
|
onreset %Script; #IMPLIED -- the form was reset --
|
|
accept %ContentTypes; #IMPLIED -- list of MIME types for file upload --
|
|
accept-charset %Charsets; #IMPLIED -- list of supported charsets --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of FORM element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT FORM - - %form.content; -(FORM) -- interactive form -->
|
|
<!ATTLIST FORM
|
|
%attrs; -- %coreattrs, %i18n --
|
|
action %URI; #REQUIRED -- server-side form handler --
|
|
method (GET|POST) GET -- HTTP method used to submit the form--
|
|
enctype %ContentType; "application/x-www-form-urlencoded"
|
|
accept-charset %Charsets; #IMPLIED -- list of supported charsets --
|
|
>
|
|
]]>
|
|
|
|
<!-- Each label must not contain more than ONE field -->
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT LABEL - - (%inline;)* -(LABEL) -- form field label text -->
|
|
<!ATTLIST LABEL
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
for IDREF #IMPLIED -- matches field ID value --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of LABEL element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT LABEL - - (%inline;|%formctrl;)+ -(LABEL) -- form field label text -->
|
|
<!ATTLIST LABEL
|
|
%attrs; -- %coreattrs, %i18n --
|
|
for IDREF #IMPLIED -- matches field ID value --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % InputType
|
|
"(TEXT | PASSWORD | CHECKBOX |
|
|
RADIO | SUBMIT | RESET |
|
|
FILE | HIDDEN | IMAGE | BUTTON)"
|
|
>
|
|
]]>
|
|
|
|
<!-- IMAGE and BUTTON are excluded from ISO-HTML -->
|
|
<!-- Form-based file upload is not supported in HTML 4.0 Mobile -->
|
|
<!ENTITY % InputType
|
|
"(TEXT | PASSWORD | CHECKBOX |
|
|
RADIO | SUBMIT | RESET |
|
|
HIDDEN)"
|
|
>
|
|
|
|
<!-- attribute name required for all but submit & reset -->
|
|
<!ELEMENT INPUT - O EMPTY -- form control -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST INPUT
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
type %InputType; TEXT -- what kind of widget is needed --
|
|
name CDATA #IMPLIED -- submit as part of form --
|
|
value CDATA #IMPLIED -- required for radio and checkboxes --
|
|
checked (checked) #IMPLIED -- for radio buttons and check boxes --
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
readonly (readonly) #IMPLIED -- for text and passwd --
|
|
size CDATA #IMPLIED -- specific to each type of field --
|
|
maxlength NUMBER #IMPLIED -- max chars for text fields --
|
|
src %URI; #IMPLIED -- for fields with images --
|
|
alt CDATA #IMPLIED -- short description --
|
|
usemap %URI; #IMPLIED -- use client-side image map --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
onselect %Script; #IMPLIED -- some text was selected --
|
|
onchange %Script; #IMPLIED -- the element value was changed --
|
|
accept %ContentTypes; #IMPLIED -- list of MIME types for file upload --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST INPUT
|
|
%attrs; -- %coreattrs, %i18n --
|
|
type %InputType; TEXT -- what kind of widget is needed --
|
|
name CDATA #IMPLIED -- submit as part of form --
|
|
value CDATA #IMPLIED -- required for radio and checkboxes --
|
|
checked (checked) #IMPLIED -- for radio buttons and check boxes --
|
|
size CDATA #IMPLIED -- specific to each type of field --
|
|
maxlength NUMBER #IMPLIED -- max chars for text fields --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT SELECT - - (OPTGROUP|OPTION)+ -- option selector -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST SELECT
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
name CDATA #IMPLIED -- field name --
|
|
size NUMBER #IMPLIED -- rows visible --
|
|
multiple (multiple) #IMPLIED -- default is single selection --
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
onchange %Script; #IMPLIED -- the element value was changed --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST SELECT
|
|
%attrs; -- %coreattrs, %i18n --
|
|
name CDATA #IMPLIED -- field name --
|
|
size NUMBER #IMPLIED -- rows visible --
|
|
multiple (multiple) #IMPLIED -- default is single selection --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT OPTGROUP - - (OPTION)+ -- option group -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST OPTGROUP
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
label %Text; #REQUIRED -- for use in hierarchical menus --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST OPTGROUP
|
|
%attrs; -- %coreattrs, %i18n --
|
|
label %Text; #REQUIRED -- for use in hierarchical menus --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT OPTION - O (#PCDATA) -- selectable choice -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST OPTION
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
selected (selected) #IMPLIED
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
label %Text; #IMPLIED -- for use in hierarchical menus --
|
|
value CDATA #IMPLIED -- defaults to element content --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST OPTION
|
|
%attrs; -- %coreattrs, %i18n --
|
|
selected (selected) #IMPLIED
|
|
label %Text; #IMPLIED -- for use in hierarchical menus --
|
|
value CDATA #IMPLIED -- defaults to element content --
|
|
>
|
|
]]>
|
|
|
|
<!ELEMENT TEXTAREA - - (#PCDATA) -- multi-line text field -->
|
|
<![ %HTML.Strict; [
|
|
<!ATTLIST TEXTAREA
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
name CDATA #IMPLIED
|
|
rows NUMBER #REQUIRED
|
|
cols NUMBER #REQUIRED
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
readonly (readonly) #IMPLIED
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
onselect %Script; #IMPLIED -- some text was selected --
|
|
onchange %Script; #IMPLIED -- the element value was changed --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
<![ %HTML.Mobile; [
|
|
<!ATTLIST TEXTAREA
|
|
%attrs; -- %coreattrs, %i18n --
|
|
name CDATA #IMPLIED
|
|
rows NUMBER #REQUIRED
|
|
cols NUMBER #REQUIRED
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<!--
|
|
#PCDATA is to solve the mixed content problem,
|
|
per specification only whitespace is allowed there!
|
|
-->
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT FIELDSET - - (#PCDATA,LEGEND,(%flow;)*) -- form control group -->
|
|
<!ATTLIST FIELDSET
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of FIELDSET element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT FIELDSET - - (#PCDATA,LEGEND,%form.content;) -(FIELDSET)
|
|
-- form control group -->
|
|
<!ATTLIST FIELDSET
|
|
%attrs; -- %coreattrs, %i18n --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT LEGEND - - (%inline;)* -- fieldset legend -->
|
|
<!ENTITY % LAlign "(top|bottom|left|right)">
|
|
|
|
<!ATTLIST LEGEND
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of LEGEND element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT LEGEND - - (#PCDATA) -- fieldset legend -->
|
|
<!ENTITY % LAlign "(top|bottom|left|right)">
|
|
|
|
<!ATTLIST LEGEND
|
|
%attrs; -- %coreattrs, %i18n --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT BUTTON - -
|
|
(%flow;)* -(A|%formctrl;|FORM|FIELDSET)
|
|
-- push button -->
|
|
<!ATTLIST BUTTON
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
name CDATA #IMPLIED
|
|
value CDATA #IMPLIED -- sent to server when submitted --
|
|
type (button|submit|reset) submit -- for use as form button --
|
|
disabled (disabled) #IMPLIED -- unavailable in this context --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
onfocus %Script; #IMPLIED -- the element got the focus --
|
|
onblur %Script; #IMPLIED -- the element lost the focus --
|
|
%reserved; -- reserved for possible future use --
|
|
>
|
|
]]>
|
|
|
|
<!-- Content model of BUTTON element is changed in ISO-HTML -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT BUTTON - -
|
|
(%inline;)+ -(A|%formctrl;|FORM|FIELDSET)
|
|
-- push button -->
|
|
<!ATTLIST BUTTON
|
|
%attrs; -- %coreattrs, %i18n --
|
|
name CDATA #IMPLIED
|
|
value CDATA #IMPLIED -- sent to server when submitted --
|
|
type (submit|reset) submit -- for use as form button --
|
|
tabindex NUMBER #IMPLIED -- position in tabbing order --
|
|
accesskey %Character; #IMPLIED -- accessibility key character --
|
|
>
|
|
]]>
|
|
|
|
<!--======================= Tables =======================================-->
|
|
<!-- Tables are not supported in HTML 4.0 Mobile -->
|
|
|
|
<!-- IETF HTML table standard, see [RFC1942] -->
|
|
|
|
<!--
|
|
The BORDER attribute sets the thickness of the frame around the
|
|
table. The default units are screen pixels.
|
|
|
|
The FRAME attribute specifies which parts of the frame around
|
|
the table should be rendered. The values are not the same as
|
|
CALS to avoid a name clash with the VALIGN attribute.
|
|
|
|
The value "border" is included for backwards compatibility with
|
|
<TABLE BORDER> which yields frame=border and border=implied
|
|
For <TABLE BORDER=1> you get border=1 and frame=implied. In this
|
|
case, it is appropriate to treat this as frame=border for backwards
|
|
compatibility with deployed browsers.
|
|
-->
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % TFrame "(void|above|below|hsides|lhs|rhs|vsides|box|border)">
|
|
|
|
<!--
|
|
The RULES attribute defines which rules to draw between cells:
|
|
|
|
If RULES is absent then assume:
|
|
"none" if BORDER is absent or BORDER=0 otherwise "all"
|
|
-->
|
|
|
|
<!ENTITY % TRules "(none | groups | rows | cols | all)">
|
|
|
|
<!-- horizontal placement of table relative to document -->
|
|
<!ENTITY % TAlign "(left|center|right)">
|
|
|
|
<!-- horizontal alignment attributes for cell contents -->
|
|
<!ENTITY % cellhalign
|
|
"align (left|center|right|justify|char) #IMPLIED
|
|
char %Character; #IMPLIED -- alignment char, e.g. char=':' --
|
|
charoff %Length; #IMPLIED -- offset for alignment char --"
|
|
>
|
|
|
|
<!-- vertical alignment attributes for cell contents -->
|
|
<!ENTITY % cellvalign
|
|
"valign (top|middle|bottom|baseline) #IMPLIED"
|
|
>
|
|
|
|
<!ELEMENT TABLE - -
|
|
(CAPTION?, (COL*|COLGROUP*), THEAD?, TFOOT?, TBODY+)>
|
|
<!ELEMENT CAPTION - - (%inline;)* -- table caption -->
|
|
<!ELEMENT THEAD - O (TR)+ -- table header -->
|
|
<!ELEMENT TFOOT - O (TR)+ -- table footer -->
|
|
<!ELEMENT TBODY O O (TR)+ -- table body -->
|
|
<!ELEMENT COLGROUP - O (col)* -- table column group -->
|
|
<!ELEMENT COL - O EMPTY -- table column -->
|
|
<!ELEMENT TR - O (TH|TD)+ -- table row -->
|
|
<!ELEMENT (TH|TD) - O (%flow;)* -- table header cell, table data cell-->
|
|
|
|
<!ATTLIST TABLE -- table element --
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
summary %Text; #IMPLIED -- purpose/structure for speech output--
|
|
width %Length; #IMPLIED -- table width --
|
|
border %Pixels; #IMPLIED -- controls frame width around table --
|
|
frame %TFrame; #IMPLIED -- which parts of frame to render --
|
|
rules %TRules; #IMPLIED -- rulings between rows and cols --
|
|
cellspacing %Length; #IMPLIED -- spacing between cells --
|
|
cellpadding %Length; #IMPLIED -- spacing within cells --
|
|
%reserved; -- reserved for possible future use --
|
|
datapagesize CDATA #IMPLIED -- reserved for possible future use --
|
|
>
|
|
|
|
<!ENTITY % CAlign "(top|bottom|left|right)">
|
|
|
|
<!ATTLIST CAPTION
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
|
|
<!--
|
|
COLGROUP groups a set of COL elements. It allows you to group
|
|
several semantically related columns together.
|
|
-->
|
|
<!ATTLIST COLGROUP
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
span NUMBER 1 -- default number of columns in group --
|
|
width %MultiLength; #IMPLIED -- default width for enclosed COLs --
|
|
%cellhalign; -- horizontal alignment in cells --
|
|
%cellvalign; -- vertical alignment in cells --
|
|
>
|
|
|
|
<!--
|
|
COL elements define the alignment properties for cells in
|
|
one or more columns.
|
|
|
|
The WIDTH attribute specifies the width of the columns, e.g.
|
|
|
|
width=64 width in screen pixels
|
|
width=0.5* relative width of 0.5
|
|
|
|
The SPAN attribute causes the attributes of one
|
|
COL element to apply to more than one column.
|
|
-->
|
|
<!ATTLIST COL -- column groups and properties --
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
span NUMBER 1 -- COL attributes affect N columns --
|
|
width %MultiLength; #IMPLIED -- column width specification --
|
|
%cellhalign; -- horizontal alignment in cells --
|
|
%cellvalign; -- vertical alignment in cells --
|
|
>
|
|
|
|
<!--
|
|
Use THEAD to duplicate headers when breaking table
|
|
across page boundaries, or for static headers when
|
|
TBODY sections are rendered in scrolling panel.
|
|
|
|
Use TFOOT to duplicate footers when breaking table
|
|
across page boundaries, or for static footers when
|
|
TBODY sections are rendered in scrolling panel.
|
|
|
|
Use multiple TBODY sections when rules are needed
|
|
between groups of table rows.
|
|
-->
|
|
<!ATTLIST (THEAD|TBODY|TFOOT) -- table section --
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
%cellhalign; -- horizontal alignment in cells --
|
|
%cellvalign; -- vertical alignment in cells --
|
|
>
|
|
|
|
<!ATTLIST TR -- table row --
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
%cellhalign; -- horizontal alignment in cells --
|
|
%cellvalign; -- vertical alignment in cells --
|
|
>
|
|
|
|
<!-- Scope is simpler than axes attribute for common tables -->
|
|
<!ENTITY % Scope "(row|col|rowgroup|colgroup)">
|
|
|
|
<!-- TH is for headers, TD for data, but for cells acting as both use TD -->
|
|
<!ATTLIST (TH|TD) -- header or data cell --
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
abbr %Text; #IMPLIED -- abbreviation for header cell --
|
|
axis CDATA #IMPLIED -- names groups of related headers--
|
|
headers IDREFS #IMPLIED -- list of id's for header cells --
|
|
scope %Scope; #IMPLIED -- scope covered by header cells --
|
|
rowspan NUMBER 1 -- number of rows spanned by cell --
|
|
colspan NUMBER 1 -- number of cols spanned by cell --
|
|
%cellhalign; -- horizontal alignment in cells --
|
|
%cellvalign; -- vertical alignment in cells --
|
|
>
|
|
]]>
|
|
|
|
<!--================ Document Head =======================================-->
|
|
<!-- %head.misc; defined earlier on as "STYLE|META|LINK" -->
|
|
<![ %HTML.Strict; [
|
|
<!ENTITY % head.content "TITLE & BASE?">
|
|
]]>
|
|
<!ENTITY % head.content "TITLE">
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT HEAD O O (%head.content;) +(%head.misc;) -- document head -->
|
|
]]>
|
|
<!-- In ISO-HTML, start tag of HEAD element cannot be omitted -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT HEAD - O (%head.content;) +(%head.misc;) -- document head -->
|
|
]]>
|
|
<!ATTLIST HEAD
|
|
%i18n; -- lang, dir --
|
|
profile %URI; #IMPLIED -- named dictionary of meta info --
|
|
>
|
|
|
|
<!-- The TITLE element is not considered part of the flow of text.
|
|
It should be displayed, for example as the page header or
|
|
window title. Exactly one title is required per document.
|
|
-->
|
|
<!ELEMENT TITLE - - (#PCDATA) -(%head.misc;) -- document title -->
|
|
<!ATTLIST TITLE %i18n;>
|
|
|
|
<!-- BASE element is excluded from ISO-HTML. -->
|
|
<![ %HTML.Strict; [
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<!ELEMENT BASE - O EMPTY -- document base URI -->
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|
<!ATTLIST BASE
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|
href %URI; #REQUIRED -- URI that acts as base URI --
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>
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|
]]>
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|
|
|
<!ELEMENT META - O EMPTY -- generic metainformation -->
|
|
<!ATTLIST META
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|
%i18n; -- lang, dir, for use with content --
|
|
http-equiv NAME #IMPLIED -- HTTP response header name --
|
|
name NAME #IMPLIED -- metainformation name --
|
|
content CDATA #REQUIRED -- associated information --
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|
scheme CDATA #IMPLIED -- select form of content --
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|
>
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|
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|
<!-- User agents conforming to HTML 4.0 Mobile must avoid showing the
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|
contents of these element. Otherwise support for them is not required. -->
|
|
<!ELEMENT STYLE - - %StyleSheet -- style info -->
|
|
<!ATTLIST STYLE
|
|
%i18n; -- lang, dir, for use with title --
|
|
type %ContentType; #REQUIRED -- content type of style language --
|
|
media %MediaDesc; #IMPLIED -- designed for use with these media --
|
|
title %Text; #IMPLIED -- advisory title --
|
|
>
|
|
|
|
<!-- SCRIPT is not supported in ISO-HTML -->
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT SCRIPT - - %Script; -- script statements -->
|
|
<!ATTLIST SCRIPT
|
|
charset %Charset; #IMPLIED -- char encoding of linked resource --
|
|
type %ContentType; #REQUIRED -- content type of script language --
|
|
src %URI; #IMPLIED -- URI for an external script --
|
|
defer (defer) #IMPLIED -- UA may defer execution of script --
|
|
event CDATA #IMPLIED -- reserved for possible future use --
|
|
for %URI; #IMPLIED -- reserved for possible future use --
|
|
>
|
|
|
|
<!ELEMENT NOSCRIPT - - (%block;)+
|
|
-- alternate content container for non script-based rendering -->
|
|
<!ATTLIST NOSCRIPT
|
|
%attrs; -- %coreattrs, %i18n, %events --
|
|
>
|
|
]]>
|
|
|
|
<!--================ Document Structure ==================================-->
|
|
<!ENTITY % html.content "HEAD, BODY">
|
|
|
|
<![ %HTML.Strict; [
|
|
<!ELEMENT HTML O O (%html.content;) -- document root element -->
|
|
]]>
|
|
|
|
<!-- In ISO-HTML, start and end tags of HTML element cannot be omitted -->
|
|
<![ %HTML.Mobile; [
|
|
<!ELEMENT HTML - - (%html.content;) -- document root element -->
|
|
]]>
|
|
<!ATTLIST HTML
|
|
%i18n; -- lang, dir --
|
|
>
|
|
</PRE>
|
|
</DIV>
|
|
|
|
</BODY>
|
|
</HTML>
|