<!--
        This section contains a DTD for HTML based on the HTML 2.0 DTD of RFC 1866,
        incorporating the changes for file upload as specified in RFC 1867,
        and the changes deriving from this document.
-->

<!--    html.dtd

        Document Type Definition for the HyperText Markup Language,
        extended for internationalisation (HTML DTD)

        Last revised: 96/08/07

     Authors: Daniel W. Connolly <connolly@w3.org>
                 Francois Yergeau <yergeau@alis.com>
     See Also:
       http://www.w3.org/hypertext/WWW/MarkUp/MarkUp.html
-->

<!ENTITY % HTML.Version
        "-//IETF//DTD HTML i18n//EN"

        -- Typical usage:

            <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML i18n//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 RFC2045)
        -->

<!ENTITY % HTTP-Method "GET | POST"
        -- as per HTTP specification, RFC2068
        -->

<!--========= DTD "Macros" =====================-->

<!ENTITY % heading "H1|H2|H3|H4|H5|H6">

<!ENTITY % list " UL | OL | DIR | MENU " >

<!ENTITY % attrs -- common attributes for elements --
         "LANG  NAME      #IMPLIED  -- RFC 1766 language tag --
          DIR  (ltr|rtl)  #IMPLIED  -- text directionnality --
          ID      ID      #IMPLIED  -- element identifier
                                       (from RFC1942) --
          CLASS   NAMES   #IMPLIED  -- for subclassing elements
                                       (from RFC1942) --">

<!ENTITY % just -- an attribute for text justification --
         "ALIGN  (left|right|center|justify)  #IMPLIED"
         -- default is left for ltr paragraphs, right for rtl -- >

<!--======= 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       -->

<!--Entities for language-dependent presentation (BIDI and
    contextual analysis) -->
<!ENTITY zwnj CDATA "&#8204;"-- zero width non-joiner-->
<!ENTITY zwj  CDATA "&#8205;"-- zero width joiner-->
<!ENTITY lrm  CDATA "&#8206;"-- left-to-right mark-->
<!ENTITY rlm  CDATA "&#8207;"-- right-to-left mark-->


<!--========= SGML Document Access (SDA) Parameter Entities =====-->

<!-- HTML 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|SPAN|Q|BDO|SUP|SUB">

<!ELEMENT (%font;|%phrase) - - (%text)*>
<!ATTLIST ( TT | CODE | SAMP | KBD | VAR )
        %attrs;
        %SDAFORM; "Lit"
        >

<!ATTLIST ( B | STRONG )
        %attrs;
        %SDAFORM; "B"
        >
<!ATTLIST ( I | EM | CITE )
        %attrs;
        %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|SPAN|BDO">

]]>

<!ENTITY % text "#PCDATA|A|IMG|BR|SPAN|Q|BDO|SUP|SUB">

<!ELEMENT BR    - O EMPTY>
<!ATTLIST BR
        %SDAPREF; "&#RE;"
        >

<!-- <BR>       Line break      -->

<!ELEMENT SPAN - - (%text)*>
<!ATTLIST SPAN
        %attrs;
        %SDAFORM; "other #Attlist"
>

<!-- <SPAN>             Generic inline container  -->
<!-- <SPAN DIR=...>     New counterflow embedding -->
<!-- <SPAN LANG="...">  Language of contents      -->

<!ELEMENT Q - - (%text)*>
<!ATTLIST Q
        %attrs;
        %SDAPREF; '"'
        %SDASUFF; '"'
        >

<!-- <Q>         Short quotation              -->
<!-- <Q LANG=xx> Language of quotation is xx  -->
<!-- <Q DIR=...> New conterflow embedding     -->

<!ELEMENT BDO - - (%text)+>
<!ATTLIST BDO
        LANG   NAME      #IMPLIED
        DIR    (ltr|rtl) #REQUIRED
        ID     ID        #IMPLIED
        CLASS  NAMES     #IMPLIED
        %SDAPREF "Bidi Override #Attval(DIR): "
        %SDASUFF "End Bidi"
        >

<!-- <BDO DIR=...>   Override directionality of text to value of DIR -->
<!-- <BDO LANG=...>  Language of contents                            -->

<!ELEMENT (SUP|SUB) - - (#PCDATA)>
<!ATTLIST (SUP)
        %attrs;
        %SDAPREF "Superscript(#content)"
        >
<!ATTLIST (SUB)
        %attrs;
        %SDAPREF "Subscript(#content)"
        >
<!-- <SUP>      Superscript              -->
<!-- <SUB>      Subscript                -->

<!--========= Link Markup ======================-->

<!ENTITY % linkType "NAMES">

<!ENTITY % linkExtraAttributes
        "REL %linkType #IMPLIED
        REV %linkType #IMPLIED
        URN CDATA #IMPLIED
        TITLE CDATA #IMPLIED
        METHODS NAMES #IMPLIED
        CHARSET NAME #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
        %attrs;
        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)    -->
<!-- <A CHARSET="...">   Charset of destination (advisory)  -->
<!-- <A LANG="...">     Language of contents btw <A> and </A>   -->
<!-- <A DIR=...>        Contents is a new counterflow embedding -->

<!--========== Images ==========================-->
<!ELEMENT IMG    - O EMPTY>
<!ATTLIST IMG
        %attrs;
        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 LANG=...>     Image contains "text" in that language  -->
<!-- <IMG DIR=...>      Inline image acts as a RTL or LTR
                        embedding w/r to BIDI algorithm         -->
<!-- <IMG ISMAP>        Each pixel can be a link                -->

<!--========== Paragraphs=======================-->

<!ELEMENT P     - O (%text)*>
<!ATTLIST P
        %attrs;
        %just;
        %SDAFORM; "Para"
        >

<!-- <P>             Paragraph                           -->
<!-- <P LANG="...">  Language of paragraph text          -->
<!-- <P DIR=...>     Base directionality of paragraph    -->
<!-- <P ALIGN=...>   Paragraph alignment (justification) -->

<!--========== Headings, Titles, Sections ===============-->

<!ELEMENT HR    - O EMPTY>
<!ATTLIST HR
        %just;
        %SDAPREF; "&#RE;&#RE;"
        >

<!-- <HR>       Horizontal rule -->

<!ELEMENT ( %heading )  - -  (%text;)*>
<!ATTLIST H1
        %attrs;
        %just;
        %SDAFORM; "H1"
        >
<!ATTLIST H2
        %attrs;
        %just;
        %SDAFORM; "H2"
        >
<!ATTLIST H3
        %attrs;
        %just;
        %SDAFORM; "H3"
        >
<!ATTLIST H4
        %attrs;
        %just;
        %SDAFORM; "H4"
        >
<!ATTLIST H5
        %attrs;
        %just;
        %SDAFORM; "H5"
        >
<!ATTLIST H6
        %attrs;
        %just;
        %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 | SPAN | BDO">
<!ELEMENT PRE - - (%pre.content)*>
<!ATTLIST PRE
        %attrs;
        WIDTH NUMBER #implied
        %SDAFORM; "Lit"
        >

<!-- <PRE>              Preformatted text                    -->
<!-- <PRE WIDTH=...>    Maximum characters per line          -->
<!-- <PRE DIR=...>      Base direction of preformatted block -->
<!-- <PRE LANG=...>     Language of contents                 -->

<![ %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
        %attrs;
        %SDAFORM; "Lit"
        %SDAPREF; "Example:&#RE;"
        >
<!ATTLIST LISTING
        %attrs;
        %SDAFORM; "Lit"
        %SDAPREF; "Listing:&#RE;"
        >

<!-- <XMP>              Example section         -->
<!-- <LISTING>          Computer listing        -->

<!ELEMENT PLAINTEXT - O %literal>
<!-- <PLAINTEXT>        Plain text passage      -->

<!ATTLIST PLAINTEXT
        %attrs;
        %SDAFORM; "Lit"
        >
]]>


<!--========== Lists ==================-->

<!ELEMENT DL    - -  (DT | DD)+>
<!ATTLIST DL
        %attrs;
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF; "Definition List:"
        >

<!ELEMENT DT    - O (%text)*>
<!ATTLIST DT
        %attrs;
        %SDAFORM; "Term"
        >

<!ELEMENT DD    - O %flow>
<!ATTLIST DD
        %attrs;
        %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
        %attrs;
        %just;
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        >
<!ATTLIST UL
        %attrs;
        %just;
        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
        %attrs;
        %just;
        COMPACT (COMPACT) #IMPLIED
        %SDAFORM; "List"
        %SDAPREF; "<LHead>Directory</LHead>"
        >
<!ATTLIST MENU
        %attrs;
        %just;
        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
        %attrs;
        %just;
        %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>
<!ATTLIST BODY
        %attrs;
        >

<!-- <BODY>          Document body                -->
<!-- <BODY DIR=...>  Base direction of whole body -->
<!-- <BODY LANG=...> Language of contents         -->

<!ELEMENT BLOCKQUOTE - - %body.content>
<!ATTLIST BLOCKQUOTE
        %attrs;
        %just;
        %SDAFORM; "BQ"
        >

<!-- <BLOCKQUOTE>       Quoted passage  -->

<!ELEMENT ADDRESS - - (%text|P)*>
<!ATTLIST  ADDRESS
        %attrs;
        %just;
        %SDAFORM; "Lit"
        %SDAPREF; "Address:&#RE;"
        >

<!-- <ADDRESS> Address, signature, or byline -->


<!--======= Forms ====================-->

<![ %HTML.Forms [

<!ELEMENT FORM - - %body.content -(FORM) +(INPUT|SELECT|TEXTAREA)>
<!ATTLIST FORM
        %attrs;
        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     -->
<!-- <FORM DIR=...>             Base direction of form          -->
<!-- <FORM LANG=...>            Language of contents            -->

<!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX |
                        RADIO | SUBMIT | RESET |
                        IMAGE | HIDDEN | FILE )">
<!ELEMENT INPUT - O EMPTY>
<!ATTLIST INPUT
        %attrs;
     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
        ACCEPT CDATA #IMPLIED --list of content types --
        ACCEPT-CHARSET CDATA #IMPLIED --list of charsets accepted --
        %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         -->
<!-- <INPUT ACCEPT="...">         List of desired media types    -->
<!-- <INPUT ACCEPT-CHARSET="..."> List of acceptable charsets    -->

<!ELEMENT SELECT - - (OPTION+) -(INPUT|SELECT|TEXTAREA)>
<!ATTLIST SELECT
        %attrs;
        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
        %attrs;
        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
        %attrs;
        NAME CDATA #REQUIRED
        ROWS NUMBER #REQUIRED
        COLS NUMBER #REQUIRED
        ACCEPT-CHARSET CDATA #IMPLIED -- list of charsets accepted --
        %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)>
<!ATTLIST HEAD
        %attrs;           >

<!-- <HEAD>     Document head   -->

<!ELEMENT TITLE - -  (#PCDATA)*  -(META|LINK)>
<!ATTLIST TITLE
        %attrs;
        %SDAFORM; "Ti"    >

<!-- <TITLE>    Title of document -->

<!ELEMENT LINK - O EMPTY>
<!ATTLIST LINK
        %attrs;
        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 CHARSET="..."> Charset of destination (advisory)      -->
<!-- <LINK METHODS="..."> Operations allowed (advisory)          -->

<!ELEMENT ISINDEX - O EMPTY>
<!ATTLIST ISINDEX
        %attrs;
        %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
        %attrs;
        %version.attr;
        %SDAFORM; "Book"
        >

<!-- <HTML>              HTML Document  -->
