Go to the first, previous, next, last section, table of contents.

HTML Public Text

HTML DTD

This is the Document Type Definition for the HyperText Markup Language, level 2.

<!--    html.dtd
        Document Type Definition for the HyperText Markup Language               
 (HTML DTD)        
$Id: html.dtd,v 1.30 1995/09/21 23:30:19 connolly Exp $        
Author: Daniel W. Connolly <connolly@w3.org>        
See Also: html.decl, html-1.dtd        
  http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html
-->
<!ENTITY % HTML.Version
        "-//IETF//DTD HTML 2.0//EN"
        -- Typical usage:
            <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
            <html>
            ...
            </html>
        --
        >
<!--============ Feature Test Entities ========================-->
<!ENTITY % HTML.Recommended "IGNORE"        
-- Certain features of the language are necessary for        
   compatibility with widespread usage, but they may        
   compromise the structural integrity of a document.        
   This feature test entity enables a more prescriptive        
   document type definition that eliminates        
   those features.        
-->
<![ %HTML.Recommended [
        <!ENTITY % HTML.Deprecated "IGNORE">
]]>
<!ENTITY % HTML.Deprecated "INCLUDE"        
-- Certain features of the language are necessary for        
   compatibility with earlier versions of the specification,        
   but they tend to be used and implemented inconsistently,        
   and their use is deprecated. This feature test entity        
   enables a document type definition that eliminates        
   these features.        
-->
<!ENTITY % HTML.Highlighting "INCLUDE"        
-- Use this feature test entity to validate that a        
   document uses no highlighting tags, which may be        
   ignored on minimal implementations.        
-->
<!ENTITY % HTML.Forms "INCLUDE"
        -- Use this feature test entity to validate that a document
           contains no forms, which may not be supported in minimal
           implementations
        -->
<!--============== Imported Names ==============================-->
<!ENTITY % Content-Type "CDATA"
        -- meaning an internet media type
           (aka MIME content type, as per RFC1521)
        -->
<!ENTITY % HTTP-Method "GET | POST"
        -- as per HTTP specification, in progress
        -->
<!--========= DTD "Macros" =====================-->
<!ENTITY % heading "H1|H2|H3|H4|H5|H6">
<!ENTITY % list " UL | OL | DIR | MENU " >
<!--======= Character mnemonic entities =================-->
<!ENTITY % ISOlat1 PUBLIC
  "ISO 8879-1986//ENTITIES Added Latin 1//EN//HTML">
%ISOlat1;
<!ENTITY amp CDATA "&#38;"     -- ampersand          -->
<!ENTITY gt CDATA "&#62;"      -- greater than       -->
<!ENTITY lt CDATA "&#60;"      -- less than          -->
<!ENTITY quot CDATA "&#34;"    -- double quote       -->
<!--========= SGML Document Access (SDA) Parameter Entities =====-->
<!-- HTML 2.0 contains SGML Document Access (SDA) fixed attributes
in support of easy transformation to the International Committee
for Accessible Document Design (ICADD) DTD        
 "-//EC-USA-CDA/ICADD//DTD ICADD22//EN".
ICADD applications are designed to support usable access to
structured information by print-impaired individuals through
Braille, large print and voice synthesis.  For more information on
SDA & ICADD:  
        - ISO 12083:1993, Annex A.8, Facilities for Braille,        
  large print and computer voice
        - ICADD ListServ        
  <ICADD%ASUACAD.BITNET@ARIZVM1.ccit.arizona.edu>
        - Usenet news group bit.listserv.easi
        - Recording for the Blind, +1 800 221 4792
-->
<!ENTITY % SDAFORM  "SDAFORM  CDATA  #FIXED"        
  -- one to one mapping        -->
<!ENTITY % SDARULE  "SDARULE  CDATA  #FIXED"        
  -- context-sensitive mapping -->
<!ENTITY % SDAPREF  "SDAPREF  CDATA  #FIXED"        
  -- generated text prefix     -->
<!ENTITY % SDASUFF  "SDASUFF  CDATA  #FIXED"        
  -- generated text suffix     -->
<!ENTITY % SDASUSP  "SDASUSP  NAME   #FIXED"        
  -- suspend transform process -->
<!--========== Text Markup =====================-->
<![ %HTML.Highlighting [
<!ENTITY % font " TT | B | I ">
<!ENTITY % phrase "EM | STRONG | CODE | SAMP | KBD | VAR | CITE ">
<!ENTITY % text "#PCDATA | A | IMG | BR | %phrase | %font">
<!ELEMENT (%font;|%phrase) - - (%text)*>
<!ATTLIST ( TT | CODE | SAMP | KBD | VAR )
        %SDAFORM; "Lit"
        >
<!ATTLIST ( B | STRONG )
        %SDAFORM; "B"
        >
<!ATTLIST ( I | EM | CITE )
        %SDAFORM; "It"
        >
<!-- <TT>       Typewriter text                         -->
<!-- <B>        Bold text                               -->
<!-- <I>        Italic text                             -->
<!-- <EM>       Emphasized phrase                       -->
<!-- <STRONG>   Strong emphasis                         -->
<!-- <CODE>     Source code phrase                      -->
<!-- <SAMP>     Sample text or characters               -->
<!-- <KBD>      Keyboard phrase, e.g. user input        -->
<!-- <VAR>      Variable phrase or substitutable        -->
<!-- <CITE>     Name or title of cited work             -->
<!ENTITY % pre.content "#PCDATA | A | HR | BR | %font | %phrase">
]]>
<!ENTITY % text "#PCDATA | A | IMG | BR">
<!ELEMENT BR    - O EMPTY>
<!ATTLIST BR
        %SDAPREF; "&#RE;"
        >
<!-- <BR>       Line break      -->
<!--========= Link Markup ======================-->
<!ENTITY % linkType "NAMES">
<!ENTITY % linkExtraAttributes
        "REL %linkType #IMPLIED
        REV %linkType #IMPLIED
        URN CDATA #IMPLIED
        TITLE CDATA #IMPLIED
        METHODS NAMES #IMPLIED
        ">
<![ %HTML.Recommended [
        <!ENTITY % A.content   "(%text)*"
        -- <H1><a name="xxx">Heading</a></H1>
                is preferred to
           <a name="xxx"><H1>Heading</H1></a>
        -->
]]>
<!ENTITY % A.content   "(%heading|%text)*">
<!ELEMENT A     - - %A.content -(A)>
<!ATTLIST A
        HREF CDATA #IMPLIED
        NAME CDATA #IMPLIED
        %linkExtraAttributes;
        %SDAPREF; "<Anchor: #AttList>"
        >
<!-- <A>               Anchor; source/destination of link    -->
<!-- <A NAME="...">     Name of this anchor                -->
<!-- <A HREF="...">     Address of link destination         -->
<!-- <A URN="...">      Permanent address of destination     -->
<!-- <A REL=...>        Relationship to destination       -->
<!-- <A REV=...>        Relationship of destination to this    -->
<!-- <A TITLE="...">    Title of destination (advisory)       -->
<!-- <A METHODS="...">  Operations on destination (advisory)     -->
<!--========== Images ==========================-->
<!ELEMENT IMG    - O EMPTY>
<!ATTLIST IMG
        SRC CDATA  #REQUIRED
        ALT CDATA #IMPLIED
        ALIGN (top|middle|bottom) #IMPLIED
        ISMAP (ISMAP) #IMPLIED
        %SDAPREF; "<Fig><?SDATrans Img: #AttList>#AttVal(Alt)</Fig>"
        >
<!-- <IMG>              Image; icon, glyph or illustration      -->
<!-- <IMG SRC="...">    Address of image object                 -->
<!-- <IMG ALT="...">    Textual alternative                     -->
<!-- <IMG ALIGN=...>    Position relative to text               -->
<!-- <IMG ISMAP>        Each pixel can be a link                -->
<!--========== Paragraphs=======================-->
<!ELEMENT P     - O (%text)*>
<!ATTLIST P
        %SDAFORM; "Para"
        >
<!-- <P>        Paragraph       -->
<!--========== Headings, Titles, Sections ===============-->
<!ELEMENT HR    - O EMPTY>
<!ATTLIST HR
        %SDAPREF; "&#RE;&#RE;"
        >
<!-- <HR>       Horizontal rule -->
<!ELEMENT ( %heading )  - -  (%text;)*>
<!ATTLIST H1
        %SDAFORM; "H1"
        >
<!ATTLIST H2
        %SDAFORM; "H2"
        >
<!ATTLIST H3
        %SDAFORM; "H3"
        >
<!ATTLIST H4
        %SDAFORM; "H4"
        >
<!ATTLIST H5
        %SDAFORM; "H5"
        >
<!ATTLIST H6
        %SDAFORM; "H6"
        >
<!-- <H1>       Heading, level 1 -->
<!-- <H2>       Heading, level 2 -->
<!-- <H3>       Heading, level 3 -->
<!-- <H4>       Heading, level 4 -->
<!-- <H5>       Heading, level 5 -->
<!-- <H6>       Heading, level 6 -->
<!--========== Text Flows ======================-->
<![ %HTML.Forms [
        <!ENTITY % block.forms "BLOCKQUOTE | FORM | ISINDEX">
]]>
<!ENTITY % block.forms "BLOCKQUOTE">
<![ %HTML.Deprecated [
        <!ENTITY % preformatted "PRE | XMP | LISTING">
]]>
<!ENTITY % preformatted "PRE">
<!ENTITY % block "P | %list | DL
        | %preformatted
        | %block.forms">
<!ENTITY % flow "(%text|%block)*">
<!ENTITY % pre.content "#PCDATA | A | HR | BR">
<!ELEMENT PRE - - (%pre.content)*>
<!ATTLIST PRE
        WIDTH NUMBER #implied
        %SDAFORM; "Lit"
        >
<!-- <PRE>              Preformatted text               -->
<!-- <PRE WIDTH=...>    Maximum characters per line     -->
<![ %HTML.Deprecated [
<!ENTITY % literal "CDATA"
        -- historical, non-conforming parsing mode where
           the only markup signal is the end tag
           in full
        -->
<!ELEMENT (XMP|LISTING) - -  %literal>
<!ATTLIST XMP
        %SDAFORM; "Lit"
        %SDAPREF; "Example:&#RE;"
        >
<!ATTLIST LISTING
        %SDAFORM; "Lit"
        %SDAPREF; "Listing:&#RE;"
        >
<!-- <XMP>              Example section         -->
<!-- <LISTING>          Computer listing        -->
<!ELEMENT PLAINTEXT - O %literal>
<!-- <PLAINTEXT>        Plain text passage      -->
<!ATTLIST PLAINTEXT
        %SDAFORM; "Lit"
        >
]]>
<!--========== Lists ==================-->
<!ELEMENT DL    - -  (DT | DD)+>
<!ATTLIST DL
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF; "Definition List:"
        >
<!ELEMENT DT    - O (%text)*>
<!ATTLIST DT
        %SDAFORM; "Term"
        >
<!ELEMENT DD    - O %flow>
<!ATTLIST DD
        %SDAFORM; "LItem"
        >
<!-- <DL>               Definition list, or glossary    -->
<!-- <DL COMPACT>       Compact style list              -->
<!-- <DT>               Term in definition list         -->
<!-- <DD>               Definition of term              -->
<!ELEMENT (OL|UL) - -  (LI)+>
<!ATTLIST OL
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        >
<!ATTLIST UL
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        >
<!-- <UL>               Unordered list                  -->
<!-- <UL COMPACT>       Compact list style              -->
<!-- <OL>               Ordered, or numbered list       -->
<!-- <OL COMPACT>       Compact list style              -->
<!ELEMENT (DIR|MENU) - -  (LI)+ -(%block)>
<!ATTLIST DIR
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF; "<LHead>Directory</LHead>"
        >
<!ATTLIST MENU
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF; "<LHead>Menu</LHead>"
        >
<!-- <DIR>              Directory list                  -->
<!-- <DIR COMPACT>      Compact list style              -->
<!-- <MENU>             Menu list                       -->
<!-- <MENU COMPACT>     Compact list style              -->
<!ELEMENT LI    - O %flow>
<!ATTLIST LI
        %SDAFORM; "LItem"
        >
<!-- <LI>               List item                       -->
<!--========== Document Body ===================-->
<![ %HTML.Recommended [        
<!ENTITY % body.content "(%heading|%block|HR|ADDRESS|IMG)*"        
-- <h1>Heading</h1>        
   <p>Text ...               
is preferred to        
   <h1>Heading</h1>        
   Text ...        
-->
]]>
<!ENTITY % body.content "(%heading | %text | %block |                          
 HR | ADDRESS)*">
<!ELEMENT BODY O O  %body.content>
<!-- <BODY>     Document body   -->
<!ELEMENT BLOCKQUOTE - - %body.content>
<!ATTLIST BLOCKQUOTE
        %SDAFORM; "BQ"
        >
<!-- <BLOCKQUOTE>       Quoted passage  -->
<!ELEMENT ADDRESS - - (%text|P)*>
<!ATTLIST  ADDRESS
        %SDAFORM; "Lit"
        %SDAPREF; "Address:&#RE;"
        >
<!-- <ADDRESS>  Address, signature, or byline    -->
<!--======= Forms ====================-->
<![ %HTML.Forms [
<!ELEMENT FORM - - %body.content -(FORM) +(INPUT|SELECT|TEXTAREA)>
<!ATTLIST FORM
        ACTION CDATA #IMPLIED
        METHOD (%HTTP-Method) GET
        ENCTYPE %Content-Type; "application/x-www-form-urlencoded"
        %SDAPREF; "<Para>Form:</Para>"
        %SDASUFF; "<Para>Form End.</Para>"
        >
<!-- <FORM>                     Fill-out or data-entry form     -->
<!-- <FORM ACTION="...">        Address for completed form      -->
<!-- <FORM METHOD=...>          Method of submitting form       -->
<!-- <FORM ENCTYPE="...">       Representation of form data     -->
<!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX |
                        RADIO | SUBMIT | RESET |
                        IMAGE | HIDDEN )">
<!ELEMENT INPUT - O EMPTY>
<!ATTLIST INPUT        
TYPE %InputType TEXT        
NAME CDATA #IMPLIED        
VALUE CDATA #IMPLIED        
SRC CDATA #IMPLIED        
CHECKED (CHECKED) #IMPLIED        
SIZE CDATA #IMPLIED        
MAXLENGTH NUMBER #IMPLIED        
ALIGN (top|middle|bottom) #IMPLIED
        %SDAPREF; "Input: "        
>
<!-- <INPUT>         Form input datum         -->
<!-- <INPUT TYPE=...>     Type of input interaction        -->
<!-- <INPUT NAME=...>     Name of form datum             -->
<!-- <INPUT VALUE="...">        Default/initial/selected value -->
<!-- <INPUT SRC="...">   Address of image               -->
<!-- <INPUT CHECKED>       Initial state is "on"         -->
<!-- <INPUT SIZE=...>     Field size hint           -->
<!-- <INPUT MAXLENGTH=...>      Data length maximum   -->
<!-- <INPUT ALIGN=...>   Image alignment                -->
<!ELEMENT SELECT - - (OPTION+) -(INPUT|SELECT|TEXTAREA)>
<!ATTLIST SELECT
        NAME CDATA #REQUIRED
        SIZE NUMBER #IMPLIED
        MULTIPLE (MULTIPLE) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF;
        "<LHead>Select #AttVal(Multiple)</LHead>"        
>
<!-- <SELECT>      Selection of option(s)   -->
<!-- <SELECT NAME=...>   Name of form datum           -->
<!-- <SELECT SIZE=...>   Options displayed at a time     -->
<!-- <SELECT MULTIPLE>   Multiple selections allowed     -->
<!ELEMENT OPTION - O (#PCDATA)*>
<!ATTLIST OPTION
        SELECTED (SELECTED) #IMPLIED
        VALUE CDATA #IMPLIED
        %SDAFORM; "LItem"
        %SDAPREF;
        "Option: #AttVal(Value) #AttVal(Selected)"        
>
<!-- <OPTION>      A selection option           -->
<!-- <OPTION SELECTED>   Initial state      -->
<!-- <OPTION VALUE="...">       Form datum value for this option-->
<!ELEMENT TEXTAREA - - (#PCDATA)* -(INPUT|SELECT|TEXTAREA)>
<!ATTLIST TEXTAREA
        NAME CDATA #REQUIRED
        ROWS NUMBER #REQUIRED
        COLS NUMBER #REQUIRED
        %SDAFORM; "Para"
        %SDAPREF; "Input Text -- #AttVal(Name): "
        >
<!-- <TEXTAREA>                An area for text input               -->
<!-- <TEXTAREA NAME=...>        Name of form datum         -->
<!-- <TEXTAREA ROWS=...>        Height of area                -->
<!-- <TEXTAREA COLS=...>        Width of area           -->
]]>
<!--======= Document Head ======================-->
<![ %HTML.Recommended [        
<!ENTITY % head.extra "">
]]>
<!ENTITY % head.extra "& NEXTID?">
<!ENTITY % head.content "TITLE & ISINDEX? & BASE? %head.extra">
<!ELEMENT HEAD O O  (%head.content) +(META|LINK)>
<!-- <HEAD>     Document head   -->
<!ELEMENT TITLE - -  (#PCDATA)*  -(META|LINK)>
<!ATTLIST TITLE
        %SDAFORM; "Ti"    >
<!-- <TITLE>    Title of document -->
<!ELEMENT LINK - O EMPTY>
<!ATTLIST LINK
        HREF CDATA #REQUIRED
        %linkExtraAttributes;
        %SDAPREF; "Linked to : #AttVal (TITLE) (URN) (HREF)>"    >
<!-- <LINK>         Link from this document         -->
<!-- <LINK HREF="...">  Address of link destination           -->
<!-- <LINK URN="...">   Lasting name of destination             -->
<!-- <LINK REL=...>     Relationship to destination         -->
<!-- <LINK REV=...>     Relationship of destination to this         -->
<!-- <LINK TITLE="..."> Title of destination (advisory)         -->
<!-- <LINK METHODS="..."> Operations allowed (advisory)         -->
<!ELEMENT ISINDEX - O EMPTY>
<!ATTLIST ISINDEX
        %SDAPREF;
   "<Para>[Document is indexed/searchable.]</Para>">
<!-- <ISINDEX>          Document is a searchable index          -->
<!ELEMENT BASE - O EMPTY>
<!ATTLIST BASE
        HREF CDATA #REQUIRED     >
<!-- <BASE>             Base context document                   -->
<!-- <BASE HREF="...">  Address for this document               -->
<!ELEMENT NEXTID - O EMPTY>
<!ATTLIST NEXTID
        N CDATA #REQUIRED     >
<!-- <NEXTID>     Next ID to use for link name         -->
<!-- <NEXTID N=...>     Next ID to use for link name               -->
<!ELEMENT META - O EMPTY>
<!ATTLIST META
        HTTP-EQUIV  NAME    #IMPLIED
        NAME        NAME    #IMPLIED
        CONTENT     CDATA   #REQUIRED    >
<!-- <META>                     Generic Meta-information        -->
<!-- <META HTTP-EQUIV=...>      HTTP response header name       -->
<!-- <META NAME=...>            Meta-information name           -->
<!-- <META CONTENT="...">       Associated information          -->
<!--======= Document Structure =================-->
<![ %HTML.Deprecated [
        <!ENTITY % html.content "HEAD, BODY, PLAINTEXT?">
]]>
<!ENTITY % html.content "HEAD, BODY">
<!ELEMENT HTML O O  (%html.content)>
<!ENTITY % version.attr "VERSION CDATA #FIXED '%HTML.Version;'">
<!ATTLIST HTML
        %version.attr;
        %SDAFORM; "Book"
        >
<!-- <HTML>            HTML Document     -->

Strict HTML DTD

This document type declaration refers to the HTML DTD with the `HTML.Recommended' entity defined as `INCLUDE' rather than IGNORE; that is, it refers to the more structurally rigid definition of HTML.

<!--    html-s.dtd
        Document Type Definition for the HyperText Markup Language        
with strict validation (HTML Strict DTD).        
$Id: html-s.dtd,v 1.3 1995/06/02 18:55:46 connolly Exp $        
Author: Daniel W. Connolly <connolly@w3.org>        
See Also: http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html
-->
<!ENTITY % HTML.Version        
"-//IETF//DTD HTML 2.0 Strict//EN"
        -- Typical usage:
            <!DOCTYPE HTML PUBLIC               
"-//IETF//DTD HTML Strict//EN">        
    <html>        
    ...        
    </html>        
--        
>
<!-- Feature Test Entities -->
<!ENTITY % HTML.Recommended "INCLUDE">
<!ENTITY % html PUBLIC "-//IETF//DTD HTML 2.0//EN">
%html;

Level 1 HTML DTD

This document type declaration refers to the HTML DTD with the `HTML.Forms' entity defined as `IGNORE' rather than `INCLUDE'. Documents which contain FORM elements do not conform to this DTD, and must use the level 2 DTD.

<!--    html-1.dtd
        Document Type Definition for the HyperText Markup Language        
with Level 1 Extensions        (HTML Level 1 DTD).        
$Id: html-1.dtd,v 1.2 1995/03/29 18:53:10 connolly Exp $        
Author: Daniel W. Connolly <connolly@w3.org>        
See Also: http://info.cern.ch/hypertext/WWW/MarkUp/MarkUp.html
-->
<!ENTITY % HTML.Version        
"-//IETF//DTD HTML 2.0 Level 1//EN"
        -- Typical usage:
            <!DOCTYPE HTML PUBLIC               
"-//IETF//DTD HTML Level 1//EN">        
    <html>        
    ...        
    </html>        
--        
>
<!-- Feature Test Entities -->
<!ENTITY % HTML.Forms "IGNORE">
<!ENTITY % html PUBLIC "-//IETF//DTD HTML 2.0//EN">
%html;

Strict Level 1 HTML DTD

This document type declaration refers to the level 1 HTML DTD with the `HTML.Recommended' entity defined as `INCLUDE' rather than IGNORE; that is, it refers to the more structurally rigid definition of HTML.

<!--    html-1s.dtd
        Document Type Definition for the HyperText Markup Language        
Struct Level 1        
$Id: html-1s.dtd,v 1.3 1995/06/02 18:55:43 connolly Exp $        
Author: Daniel W. Connolly <connolly@w3.org>        
See Also: http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html
-->
<!ENTITY % HTML.Version        
"-//IETF//DTD HTML 2.0 Strict Level 1//EN"
        -- Typical usage:
            <!DOCTYPE HTML PUBLIC               
"-//IETF//DTD HTML Strict Level 1//EN">        
    <html>        
    ...        
    </html>        
--        
>
<!-- Feature Test Entities -->
<!ENTITY % HTML.Recommended "INCLUDE">
<!ENTITY % html-1 PUBLIC "-//IETF//DTD HTML 2.0 Level 1//EN">
%html-1;

SGML Declaration for HTML

This is the SGML Declaration for HyperText Markup Language.

<!SGML  "ISO 8879:1986"
--        
SGML Declaration for HyperText Markup Language (HTML).
--
CHARSET
         BASESET  "ISO 646:1983//CHARSET
                   International Reference Version
                   (IRV)//ESC 2/5 4/0"
         DESCSET  0   9   UNUSED
                  9   2   9
                  11  2   UNUSED
                  13  1   13
                  14  18  UNUSED
                  32  95  32
                  127 1   UNUSED
     BASESET   "ISO Registration Number 100//CHARSET
                ECMA-94 Right Part of
                Latin Alphabet Nr. 1//ESC 2/13 4/1"
         DESCSET  128  32   UNUSED
                  160  96    32
CAPACITY        SGMLREF
                TOTALCAP        150000
                GRPCAP          150000               
ENTCAP               150000  
SCOPE    DOCUMENT
SYNTAX   
         SHUNCHAR CONTROLS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16               
 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 127
         BASESET  "ISO 646:1983//CHARSET
                   International Reference Version
                   (IRV)//ESC 2/5 4/0"
         DESCSET  0 128 0
         FUNCTION               
  RE          13
                  RS          10
                  SPACE       32
                  TAB SEPCHAR  9        
         NAMING   LCNMSTRT ""
                  UCNMSTRT ""
                  LCNMCHAR ".-"
                  UCNMCHAR ".-"
                  NAMECASE GENERAL YES
                           ENTITY  NO
         DELIM    GENERAL  SGMLREF
                  SHORTREF SGMLREF
         NAMES    SGMLREF
         QUANTITY SGMLREF
                  ATTSPLEN 2100
                  LITLEN   1024
                  NAMELEN  72    -- somewhat arbitrary; taken from
                                internet line length conventions --
                  PILEN    1024
                  TAGLVL   100
                  TAGLEN   2100
                  GRPGTCNT 150
                  GRPCNT   64                   
FEATURES
  MINIMIZE
    DATATAG  NO
    OMITTAG  YES
    RANK     NO
    SHORTTAG YES
  LINK
    SIMPLE   NO
    IMPLICIT NO
    EXPLICIT NO
  OTHER
    CONCUR   NO
    SUBDOC   NO
    FORMAL   YES
  APPINFO    "SDA"  -- conforming SGML Document Access application               
    --
>
<!--         
$Id: html.decl,v 1.17 1995/06/08 14:59:32 connolly Exp $        
Author: Daniel W. Connolly <connolly@w3.org>        
See also: http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html
 -->

Sample SGML Open Entity Catalog for HTML

The SGML standard describes an "entity manager" as the portion or component of an SGML system that maps SGML entities into the actual storage model (e.g., the file system). The standard itself does not define a particular mapping methodology or notation.

To assist the interoperability among various SGML tools and systems, the SGML Open consortium has passed a technical resolution that defines a format for an application-independent entity catalog that maps external identifiers and/or entity names to file names.

Each entry in the catalog associates a storage object identifier (such as a file name) with information about the external entity that appears in the SGML document. In addition to entries that associate public identifiers, a catalog entry can associate an entity name with a storage object identifier. For example, the following are possible catalog entries:

-- catalog: SGML Open style entity catalog for HTML --        
-- $Id: catalog,v 1.3 1995/09/21 23:30:23 connolly Exp $ --        
-- Ways to refer to Level 2: most general to most specific --
PUBLIC  "-//IETF//DTD HTML//EN"                html.dtd
PUBLIC  "-//IETF//DTD HTML 2.0//EN"         html.dtd
PUBLIC  "-//IETF//DTD HTML Level 2//EN"         html.dtd
PUBLIC  "-//IETF//DTD HTML 2.0 Level 2//EN"     html.dtd        
-- Ways to refer to Level 1: most general to most specific --
PUBLIC  "-//IETF//DTD HTML Level 1//EN"         html-1.dtd
PUBLIC  "-//IETF//DTD HTML 2.0 Level 1//EN"     html-1.dtd        
-- Ways to refer to               
 Strict Level 2: most general to most specific --
PUBLIC  "-//IETF//DTD HTML Strict//EN"           html-s.dtd
PUBLIC  "-//IETF//DTD HTML 2.0 Strict//EN"           html-s.dtd
PUBLIC  "-//IETF//DTD HTML Strict Level 2//EN"   html-s.dtd
PUBLIC  "-//IETF//DTD HTML 2.0 Strict Level 2//EN"      html-s.dtd        
-- Ways to refer to               
 Strict Level 1: most general to most specific --
PUBLIC  "-//IETF//DTD HTML Strict Level 1//EN"   html-1s.dtd
PUBLIC  "-//IETF//DTD HTML 2.0 Strict Level 1//EN"      html-1s.dtd        
-- ISO latin 1 entity set for HTML -- 
PUBLIC  "ISO 8879-1986//ENTITIES Added Latin 1//EN//HTML"        ISOlat1.sgml

Character Entity Sets

The HTML DTD defines the following entities. They represent particular graphic characters which have special meanings in places in the markup, or may not be part of the character set available to the writer.

Numeric and Special Graphic Entity Set

The following table lists each of the characters included from the Numeric and Special Graphic entity set, along with its name, syntax for use, and description. This list is derived from `ISO Standard 8879:1986//ENTITIES Numeric and Special Graphic//EN'. However, HTML does not include for the entire entity set -- only the entities listed below are included.

GLYPH   NAME      SYNTAX       DESCRIPTION
<       lt      &lt;    Less than sign
>       gt      &gt;    Greater than sign
&       amp     &amp;   Ampersand
"       quot    &quot;  Double quote sign

ISO Latin 1 Character Entity Set

The following public text lists each of the characters specified in the Added Latin 1 entity set, along with its name, syntax for use, and description. This list is derived from ISO Standard 8879:1986//ENTITIES Added Latin 1//EN. HTML includes the entire entity set.

<!-- (C) International Organization for Standardization 1986
     Permission to copy in any form is granted for use with
     conforming SGML systems and applications as defined in
     ISO 8879, provided this notice is included in all copies.
-->
<!-- Character entity set. Typical invocation:
     <!ENTITY % ISOlat1 PUBLIC
       "ISO 8879-1986//ENTITIES Added Latin 1//EN//HTML">
     %ISOlat1;
-->
<!--    Modified for use in HTML        
$Id: ISOlat1.sgml,v 1.2 1994/11/30 23:45:12 connolly Exp $ -->
<!ENTITY AElig  CDATA "&#198;" -- capital AE diphthong (ligature) -->
<!ENTITY Aacute CDATA "&#193;" -- capital A, acute accent -->
<!ENTITY Acirc  CDATA "&#194;" -- capital A, circumflex accent -->
<!ENTITY Agrave CDATA "&#192;" -- capital A, grave accent -->
<!ENTITY Aring  CDATA "&#197;" -- capital A, ring -->
<!ENTITY Atilde CDATA "&#195;" -- capital A, tilde -->
<!ENTITY Auml   CDATA "&#196;" -- capital A, dieresis or umlaut mark -->
<!ENTITY Ccedil CDATA "&#199;" -- capital C, cedilla -->
<!ENTITY ETH    CDATA "&#208;" -- capital Eth, Icelandic -->
<!ENTITY Eacute CDATA "&#201;" -- capital E, acute accent -->
<!ENTITY Ecirc  CDATA "&#202;" -- capital E, circumflex accent -->
<!ENTITY Egrave CDATA "&#200;" -- capital E, grave accent -->
<!ENTITY Euml   CDATA "&#203;" -- capital E, dieresis or umlaut mark -->
<!ENTITY Iacute CDATA "&#205;" -- capital I, acute accent -->
<!ENTITY Icirc  CDATA "&#206;" -- capital I, circumflex accent -->
<!ENTITY Igrave CDATA "&#204;" -- capital I, grave accent -->
<!ENTITY Iuml   CDATA "&#207;" -- capital I, dieresis or umlaut mark -->
<!ENTITY Ntilde CDATA "&#209;" -- capital N, tilde -->
<!ENTITY Oacute CDATA "&#211;" -- capital O, acute accent -->
<!ENTITY Ocirc  CDATA "&#212;" -- capital O, circumflex accent -->
<!ENTITY Ograve CDATA "&#210;" -- capital O, grave accent -->
<!ENTITY Oslash CDATA "&#216;" -- capital O, slash -->
<!ENTITY Otilde CDATA "&#213;" -- capital O, tilde -->
<!ENTITY Ouml   CDATA "&#214;" -- capital O, dieresis or umlaut mark -->
<!ENTITY THORN  CDATA "&#222;" -- capital THORN, Icelandic -->
<!ENTITY Uacute CDATA "&#218;" -- capital U, acute accent -->
<!ENTITY Ucirc  CDATA "&#219;" -- capital U, circumflex accent -->
<!ENTITY Ugrave CDATA "&#217;" -- capital U, grave accent -->
<!ENTITY Uuml   CDATA "&#220;" -- capital U, dieresis or umlaut mark -->
<!ENTITY Yacute CDATA "&#221;" -- capital Y, acute accent -->
<!ENTITY aacute CDATA "&#225;" -- small a, acute accent -->
<!ENTITY acirc  CDATA "&#226;" -- small a, circumflex accent -->
<!ENTITY aelig  CDATA "&#230;" -- small ae diphthong (ligature) -->
<!ENTITY agrave CDATA "&#224;" -- small a, grave accent -->
<!ENTITY aring  CDATA "&#229;" -- small a, ring -->
<!ENTITY atilde CDATA "&#227;" -- small a, tilde -->
<!ENTITY auml   CDATA "&#228;" -- small a, dieresis or umlaut mark -->
<!ENTITY ccedil CDATA "&#231;" -- small c, cedilla -->
<!ENTITY eacute CDATA "&#233;" -- small e, acute accent -->
<!ENTITY ecirc  CDATA "&#234;" -- small e, circumflex accent -->
<!ENTITY egrave CDATA "&#232;" -- small e, grave accent -->
<!ENTITY eth    CDATA "&#240;" -- small eth, Icelandic -->
<!ENTITY euml   CDATA "&#235;" -- small e, dieresis or umlaut mark -->
<!ENTITY iacute CDATA "&#237;" -- small i, acute accent -->
<!ENTITY icirc  CDATA "&#238;" -- small i, circumflex accent -->
<!ENTITY igrave CDATA "&#236;" -- small i, grave accent -->
<!ENTITY iuml   CDATA "&#239;" -- small i, dieresis or umlaut mark -->
<!ENTITY ntilde CDATA "&#241;" -- small n, tilde -->
<!ENTITY oacute CDATA "&#243;" -- small o, acute accent -->
<!ENTITY ocirc  CDATA "&#244;" -- small o, circumflex accent -->
<!ENTITY ograve CDATA "&#242;" -- small o, grave accent -->
<!ENTITY oslash CDATA "&#248;" -- small o, slash -->
<!ENTITY otilde CDATA "&#245;" -- small o, tilde -->
<!ENTITY ouml   CDATA "&#246;" -- small o, dieresis or umlaut mark -->
<!ENTITY szlig  CDATA "&#223;" -- small sharp s, German (sz ligature) -->
<!ENTITY thorn  CDATA "&#254;" -- small thorn, Icelandic -->
<!ENTITY uacute CDATA "&#250;" -- small u, acute accent -->
<!ENTITY ucirc  CDATA "&#251;" -- small u, circumflex accent -->
<!ENTITY ugrave CDATA "&#249;" -- small u, grave accent -->
<!ENTITY uuml   CDATA "&#252;" -- small u, dieresis or umlaut mark -->
<!ENTITY yacute CDATA "&#253;" -- small y, acute accent -->
<!ENTITY yuml   CDATA "&#255;" -- small y, dieresis or umlaut mark -->

Go to the first, previous, next, last section, table of contents.