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<!SGML "ISO 8879:1986" |
<!-- html.dtd |
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-- |
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Document Type Definition for the HyperText Markup Language |
Document Type Definition for the HyperText Markup Language |
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as used by the World Wide Web application (HTML DTD). |
as used by the World Wide Web application (HTML DTD). |
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NOTE: This is a definition of HTML with respect to |
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SGML, and assumes an understaning of SGML terms. |
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For a description of HTML in layman's terms, see |
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"HTML: A Representation for Nodes in the World Wide Web" |
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by Dan Connolly. |
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aka |
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http://info.cern.ch/hypertext/WWW/MarkUp/MarkUp.html |
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by <connolly@convex.com> |
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-- |
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CHARSET |
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BASESET "ISO 646:1983//CHARSET |
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International Reference Version (IRV)//ESC 2/5 4/0" |
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DESCSET 0 9 UNUSED |
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9 2 9 |
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11 2 UNUSED |
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13 1 13 |
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14 18 UNUSED |
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32 95 32 |
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127 1 UNUSED |
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CAPACITY SGMLREF |
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TOTALCAP 150000 |
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GRPCAP 150000 |
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SCOPE DOCUMENT |
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SYNTAX |
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SHUNCHAR CONTROLS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 |
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19 20 21 22 23 24 25 26 27 28 29 30 31 127 255 |
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BASESET "ISO 646:1983//CHARSET |
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International Reference Version (IRV)//ESC 2/5 4/0" |
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DESCSET 0 128 0 |
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FUNCTION RE 13 |
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RS 10 |
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SPACE 32 |
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TAB SEPCHAR 9 |
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NAMING LCNMSTRT "" |
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UCNMSTRT "" |
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LCNMCHAR ".-" |
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UCNMCHAR ".-" |
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NAMECASE GENERAL YES |
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ENTITY NO |
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DELIM GENERAL SGMLREF |
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SHORTREF SGMLREF |
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NAMES SGMLREF |
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QUANTITY SGMLREF |
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NAMELEN 34 |
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TAGLVL 100 |
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LITLEN 1024 |
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GRPGTCNT 150 |
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GRPCNT 64 |
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FEATURES |
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MINIMIZE |
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DATATAG NO |
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OMITTAG YES |
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RANK NO |
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SHORTTAG NO |
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LINK |
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SIMPLE NO |
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IMPLICIT NO |
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EXPLICIT NO |
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OTHER |
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CONCUR NO |
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SUBDOC NO |
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FORMAL NO |
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APPINFO NONE |
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> |
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<!DOCTYPE HTML [ |
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<!-- |
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$Id$ |
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--> |
--> |
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<!-- Regarding clause 6.1, SGML Document: |
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[1] SGML document = SGML document entity, |
<!-- DTD definitions --> |
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(SGML subdocument entity | |
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SGML text entity | non-SGML data entity)* |
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The role of SGML document entity is filled by this DTD, |
<!ENTITY % URL "CDATA" |
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followed by the conventional HTML data stream. |
-- The term URL means a CDATA attribute |
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--> |
whose value is a Uniform Resource Locator, |
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as defined. (A URN may also be usable here when defined.) |
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--> |
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<!ENTITY % heading "H1|H2|H3|H4|H5|H6" > |
<!ENTITY % Content-Type "CDATA" -- meaning a MIME content type --> |
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<!ENTITY % list "UL|OL|DIR|MENU"> |
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<!ENTITY % literal "XMP|LISTING"> |
<!ENTITY % linkattributes |
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"HREF %URL; #IMPLIED |
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REL CDATA #IMPLIED -- forward relationship type -- |
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REV CDATA #IMPLIED -- reversed relationship type |
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to referent data: |
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PARENT CHILD, SIBLING, NEXT, TOP, |
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DEFINITION, UPDATE, ORIGINAL etc. -- |
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<!ENTITY % headelement |
URN CDATA #IMPLIED -- universal resource number -- |
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"TITLE | NEXTID | ISINDEX" > |
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<!ENTITY % bodyelement |
TITLE CDATA #IMPLIED -- advisory only -- |
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"P | A | %heading | %list | DL | ADDRESS | PRE | %literal"> |
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<!ENTITY % anyelement "HEAD | %headelement; | BODY | %bodyelement;"> |
METHODS NAMES #IMPLIED -- supported public methods of the object: |
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TEXTSEARCH, GET, HEAD, ... -- |
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<!ELEMENT HTML O O ((%anyelement|#PCDATA)*, PLAINTEXT?)> |
--@# content-type -- |
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"> |
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<!ELEMENT HEAD - - (TITLE? & ISINDEX? & NEXTID?)> |
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<!ELEMENT BODY - - (%bodyelement|#PCDATA)*> |
<!-- Document Element --> |
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<!ELEMENT TITLE - - CDATA |
<!ELEMENT HTML O O (HEAD, BODY)> |
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-- The TITLE element is not considered part of the flow of text. |
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It should be displayed, for example as the page header or |
<!-- Head --> |
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window title. |
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--> |
<!ELEMENT HEAD O O ( TITLE? & ISINDEX? & NEXTID? & LINK* |
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& BASE?)> |
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<!ELEMENT NEXTID - O EMPTY -- @# obsolete --> |
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<!ATTLIST NEXTID |
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N ID #REQUIRED -- next available id --> |
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<!ELEMENT TITLE - - (#PCDATA) |
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-- The TITLE element is not considered part of the flow of text. |
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It should be displayed, for example as the page header or |
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window title. |
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--> |
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<!ELEMENT ISINDEX - O EMPTY |
<!ELEMENT ISINDEX - O EMPTY |
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-- WWW clients should offer the option to perform a search on |
-- WWW clients should offer the option to perform a search on |
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documents containing ISINDEX. |
documents containing ISINDEX. |
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--> |
--> |
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<!ELEMENT NEXTID - O EMPTY> |
<!ELEMENT LINK - O EMPTY> |
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<!ATTLIST NEXTID N NUMBER #REQUIRED |
<!ATTLIST LINK |
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-- The number should be the highest number that appears in |
%linkattributes |
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any NAME attribute in the document. |
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--> |
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<!ELEMENT BASE - O EMPTY -- Reference context for URLS --> |
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<!ENTITY % URL "CDATA" |
<!ATTLIST BASE |
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-- The term URL means a CDATA attribute |
HREF %URL; #IMPLIED |
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whose value is a Universal Resource Locator, |
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as defined in ftp://info.cern.ch/pub/www/doc/url3.txt |
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--> |
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<!ELEMENT A - - (#PCDATA)> |
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<!-- Body --> |
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<!ELEMENT BODY O O ANY -- empty P version @# --> |
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<!-- Text --> |
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<!ENTITY % inline "EM | STRONG | |
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CODE | SAMP | KBD | KEY | VAR | DFN | CITE " |
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> |
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<!ENTITY % fonts "B | I | U | TT"> |
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<!ENTITY % text "#PCDATA | IMG | %inline; | %fonts; | BR | P" |
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-- @# yuk: P in textflows -- |
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--@# BR -> &br; -- |
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--@# yuk: fonts -- > |
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<!ENTITY % htext "A | %text" -- Plus links, no structure --> |
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<!ELEMENT (%inline;) - - (%htext)+> |
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<!ELEMENT (%fonts;) - - (%htext)+> |
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<!ELEMENT A - - ANY -(A)> |
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<!ATTLIST A |
<!ATTLIST A |
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NAME NMTOKEN #IMPLIED |
NAME NMTOKEN #IMPLIED -- @# dangit! this should be ID! -- |
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HREF %URL; #IMPLIED |
%linkattributes; |
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TEXT (PLAIN, X-HTML, X-RTF) #IMPLIED |
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-- choose MIME text/plain or text/html content type -- |
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-- if not specified, inferred from HREF filename -- |
<!ELEMENT IMG - O EMPTY -- Embedded image --> |
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> |
<!ATTLIST IMG |
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SRC %URL; #IMPLIED -- URL of document to embed -- |
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<!ELEMENT P - O EMPTY> |
ALT CDATA #IMPLIED |
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<!-- P separates paragraphs --> |
ALIGN (top|middle|bottom|left|center|right) #IMPLIED --@#supported?-- |
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<!ELEMENT (%heading) - - (#PCDATA|A)+> |
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<!ELEMENT DL - - (DT|DD|A|P|#PCDATA)*> |
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<!-- Content should match ((DT,(A|#PCDATA)+)+,(DD,(A|#PCDATA)+)) |
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But mixed content is messy. |
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--> |
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<!ELEMENT DT - O EMPTY> |
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<!ELEMENT DD - O EMPTY> |
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<!ELEMENT (%list) - - (#PCDATA|LI|A|P)+> |
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<!-- Content should match ((LI,(A|#PCDATA)+)+) |
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But mixed content is messy. |
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--> |
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<!ELEMENT LI - O EMPTY> |
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<!ELEMENT ADDRESS - - (#PCDATA|A|P)+> |
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<!ELEMENT PRE - - (#PCDATA|A|P)+> |
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<!ATTLIST PRE |
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WIDTH NUMBER 80 |
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> |
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<!ELEMENT (%literal) - - CDATA> |
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<!ELEMENT PLAINTEXT - O EMPTY> |
<!ELEMENT P - O EMPTY -- paragraph separator @# --> |
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<!-- The <PLAINTEXT> tag, if present, signals the end of the SGML |
<!ELEMENT HR - O EMPTY -- horizontal rule --> |
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document entity. The data that follows serves as a non-SGML |
<!ELEMENT BR - O EMPTY -- @# BR -> &br; --> |
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data entity. |
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--> |
<!-- Headings --> |
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<!-- Text Entities --> |
<!ENTITY % heading "H1|H2|H3|H4|H5|H6" > |
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<!ELEMENT ( %heading ) - - (%htext;)+> |
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<!-- Characters that may begin a delimiter-in-context sequence |
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From "ISO 8879:1986//ENTITIES Numeric and Special Graphic//EN" --> |
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<!ENTITY lt "<"> |
<!-- Pre-formatted Text --> |
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<!ENTITY gt ">"> |
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<!ENTITY amp "&"> |
<!ENTITY % pre "PRE | XMP | LISTING" -- @# treat XMP like pre? --> |
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<!ELEMENT PRE - - (#PCDATA | %fonts | %inline | A | BR)+> |
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<!-- @# yuk: VAR, CITE etc. in PRE --> |
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<!-- @# P in PRE ??--> |
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<!-- @# BR -> &br; --> |
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<!ELEMENT (XMP|LISTING) - - RCDATA> |
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<!-- @# PLAINTEXT?? --> |
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<!ATTLIST (%pre;) |
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WIDTH NUMBER #implied |
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> |
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<!-- Block Elements --> |
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<!ENTITY % list " UL | OL | DIR | MENU "> |
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<!ENTITY % block -- as htext but also nested structure -- |
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"HR | %list | DL |
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| %pre; | BLOCKQUOTE | FIG | ADDRESS |
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| FORM"> |
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<!ELEMENT DL - - (DT*, DD?)+> |
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<!ATTLIST DL |
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STYLE (COMPACT) #IMPLIED> |
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<!ELEMENT DT - O (%htext)+> |
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<!ELEMENT DD - O (%htext|%block)+> |
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<!ELEMENT (%list) - - (LI)+> |
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<!ELEMENT LI - O (%htext|%block)+> |
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<!ELEMENT BLOCKQUOTE - - ((%htext)+, ADDRESS?)+ -- @# Hmm... -- |
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-- for quoting some other source --> |
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<!ELEMENT ADDRESS - - (%htext;)+> |
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<!ELEMENT FIG - - (%htext;)+> |
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<!-- Forms --> |
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<!ENTITY % HTTP-Method "(GET | POST)"> |
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<!ELEMENT FORM - - ANY -(FORM) +(INPUT|SELECT|TEXTAREA)> |
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<!ATTLIST FORM |
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ACTION %URL #REQUIRED |
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METHOD %HTTP-Method #IMPLIED -- @# MAILTO? -- |
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ENCTYPE %Content-Type; #IMPLIED |
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> |
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<!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX | |
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RADIO | SUBMIT | RESET | |
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IMAGE | HIDDEN )"> |
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<!ELEMENT INPUT - O EMPTY> |
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<!ATTLIST INPUT |
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TYPE %InputType #IMPLIED -- @# defaults to TEXT?? -- |
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NAME CDATA #IMPLIED -- required for all but submit and reset -- |
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VALUE CDATA #IMPLIED |
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SRC %URL #IMPLIED -- for image inputs -- |
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STATE (CHECKED) #IMPLIED |
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SIZE CDATA #IMPLIED -- @# should be NUMBERS: delimit with space, not comma -- |
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MAXLENGTH NUMBER #IMPLIED |
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ALIGN (top|middle|bottom|left|center|right) #IMPLIED --@#supported?-- |
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> |
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<!ELEMENT SELECT - - (OPTION+)> |
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<!ATTLIST SELECT |
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NAME CDATA #REQUIRED |
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SIZE NUMBER #IMPLIED |
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SELECTIONS (MULTIPLE) #IMPLIED |
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> |
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<!ELEMENT OPTION - O (#PCDATA)> |
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<!ATTLIST OPTION |
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STATE (SELECTED) #IMPLIED |
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VALUE CDATA #IMPLIED |
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> |
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<!ELEMENT TEXTAREA - - (#PCDATA)> |
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<!ATTLIST TEXTAREA |
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NAME CDATA #REQUIRED |
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ROWS NUMBER #REQUIRED -- @#implied? -- |
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COLS NUMBER #REQUIRED |
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> |
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<!-- Mnemonic character entities. --> |
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<!-- Characters from various Latin alphabets. --> |
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<!ENTITY % ISOlat1 PUBLIC |
<!ENTITY % ISOlat1 PUBLIC |
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"ISO 8879:1986//ENTITIES Added Latin 1//EN"> |
"ISO 8879:1986//ENTITIES Added Latin 1//EN"> |
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%ISOlat1; |
%ISOlat1; |
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]> |
<!ENTITY amp "&" -- ampersand --> |
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<!ENTITY gt ">" -- greater than --> |
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<!ENTITY lt "<" -- less than --> |
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<!ENTITY nbsp "<? nonbreaking-space>"> |
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<!-- @# should add entites for processing instructions |
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for line break, centering, etc. --> |
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