22 Document Type Definition


<!--
    This is an EXPERIMENTAL version of the HTML 4.0 DTD which
    excludes presentation attributes and elements that W3C expects
    to phase out as support for style sheets matures. If you need
    these features please use the transitional DTD. 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: 1999/07/02 17:21:46 $

          Authors:
              Dave Raggett <dsr@w3.org>
              Arnaud Le Hors <lehors@w3.org>

    This is work in progress, subject to change at any time.
    It does not imply endorsement by, or the consensus of,
    either W3C or members of the HTML working group. Further
    information about HTML 4.0 is available at:

          http://www.w3.org/TR/WD-html40/.
-->
<!ENTITY % HTML.Version "-//W3C//DTD HTML 4.0//EN"
  -- Typical usage:

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
    <html>
    <head>
    ...
    </head>
    <body>
    ...
    </body>
    </html>

   The FPI for the transitional HTML 4.0 DTD is:

        "-//W3C//DTD HTML 4.0 transitional//EN

   If you are writing a frameset document you should use the
   following FPI:

        "-//W3C//DTD HTML 4.0 Frameset//EN"

    You can also use a URL as a system identifier for the DTD, as in:


    <!DOCTYPE HTML SYSTEM "http://www.w3.org/DTD/HTML4-strict.dtd">

    or better still together with the public identifier as in:

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"
            "http://www.w3.org/DTD/HTML4-strict.dtd">

    The user agent can then download the DTD and entity sets as needed.
    The following URLs are supported in relation to HTML 4.0

    "http://www.w3.org/DTD/HTML4-strict.dtd" (strict DTD)
    "http://www.w3.org/DTD/HTML4-loose.dtd" (loose DTD)
    "http://www.w3.org/DTD/HTML4-frameset.dtd" (frameset documents)
    "http://www.w3.org/DTD/ISOlat1.ent" (Latin-1 entities)
    "http://www.w3.org/DTD/HTMLsymbol.ent" (Symbol entities)
    "http://www.w3.org/DTD/HTMLspecial.ent" (Special entities)
-->

<!--================== Imported Names ====================================-->

<!ENTITY % ContentType "CDATA"
    -- an Internet media type, as per [RFC2045]
    -->

<!ENTITY % URL "CDATA"
    -- a Uniform Resource Locator,
       see [RFC1808] and [RFC1738]
    -->

<!ENTITY % Script "CDATA" -- scriptlet -->

<!-- Parameter Entities -->

<!ENTITY % head.misc "SCRIPT|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/DTD/ISOlat1.ent">
%HTMLlat1;

<!ENTITY % HTMLsymbol PUBLIC
   "-//W3C//ENTITIES Symbols//EN//HTML"
   "http://www.w3.org/DTD/HTMLsymbol.ent">
%HTMLsymbol;

<!ENTITY % HTMLspecial PUBLIC
   "-//W3C//ENTITIES Special//EN//HTML"
   "http://www.w3.org/DTD/HTMLspecial.ent">
%HTMLspecial;
<!--=================== Generic Attributes ===============================-->

<!ENTITY % coreattrs
 "id          ID         #IMPLIED  -- document-wide unique id --
  class       CDATA      #IMPLIED  -- space separated list of classes --
  style       CDATA      #IMPLIED  -- associated style info --
  title       CDATA      #IMPLIED  -- advisory title/amplification --"
  >

<!ENTITY % i18n
 "lang        NAME       #IMPLIED  -- [RFC1766] language value --
  dir         (ltr|rtl)  #IMPLIED  -- direction for weak/neutral text --"
  >

<!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     $URL;      #IMPLIED  -- a single or tabular Data Source --
  datafld     CDATA      #IMPLIED  -- the property or column name --
  dataformatas (plaintext|html) plaintext -- text or html --"
  >
]]>

<!ENTITY % reserved "">

<!ENTITY % attrs "%coreattrs; %i18n; %events;">


<!--=================== Text Markup ======================================-->

<!ENTITY % fontstyle
 "TT | I | B | BIG | SMALL">

<!ENTITY % phrase "EM | STRONG | DFN | CODE |
                   SAMP | KBD | VAR | CITE | ACRONYM">

<!ENTITY % special
   "A | IMG | OBJECT | BR | SCRIPT | MAP | Q | SUB | SUP | SPAN | BDO">

<!ENTITY % formctrl "INPUT | SELECT | TEXTAREA | LABEL | BUTTON">

<!-- %inline; covers inline or "text-level" elements -->
<!ENTITY % inline "#PCDATA | %fontstyle; | %phrase; | %special; | %formctrl;">

<!ELEMENT (%fontstyle;|%phrase;) - - (%inline;)*>
<!ATTLIST (%fontstyle;|%phrase;)
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!ELEMENT (SUB|SUP) - - (%inline;)* -- subscript, superscript -->
<!ATTLIST (SUB|SUP)
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!ELEMENT SPAN - - (%inline;)*      -- generic language/style container -->
<!ATTLIST SPAN
  %attrs;                          -- %coreattrs, %i18n, %events --
  %reserved;			   -- reserved for possible future use --
  >

<!-- INS/DEL are handled by inclusion on BODY -->
<!ELEMENT (INS|DEL) - - (%inline;)* -- inserted text, deleted text -->
<!ATTLIST (INS|DEL)
  %attrs;                          -- %coreattrs, %i18n, %events --
  cite        %URL;     #IMPLIED   -- info on reason for change --
  datetime    CDATA     #IMPLIED   -- when changed: ISO date format --
  >

<!ELEMENT BDO - - (%inline;)*       -- I18N BiDi over-ride -->
<!ATTLIST BDO
  %coreattrs;                      -- id, class, style, title --
  lang        NAME       #IMPLIED  -- [RFC1766] language value --
  dir         (ltr|rtl)  #REQUIRED -- directionality --
  >


<!ELEMENT BR - O EMPTY            -- forced line break -->
<!ATTLIST BR
  %coreattrs;                      -- id, class, style, 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
-->

<!ENTITY % blocklevel
     "P | %heading; | %list; | %preformatted; | DL | DIV | NOSCRIPT |
      BLOCKQUOTE | FORM | HR | TABLE | FIELDSET | ADDRESS">

<!--=================== Document Body ====================================-->

<!ENTITY % block "%blocklevel;">


<!ELEMENT BODY O O  (%block;)+ +(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 --
  >

<!ELEMENT ADDRESS - - (%inline;)*>
<!ATTLIST ADDRESS
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!ELEMENT DIV - - (%block;)+ -- generic language/style container -->
<!ATTLIST DIV
  %attrs;                          -- %coreattrs, %i18n, %events --

  %reserved;                       -- reserved for possible future use --
  >


<!--================== The Anchor Element ================================-->

<!ENTITY % Shape "(rect|circle|poly|default)">
<!ENTITY % Coords "CDATA" -- comma separated list of numbers -->

<!ELEMENT A - - (%inline;)* -(A) -- anchor -->
<!ATTLIST A
  %attrs;                          -- %coreattrs, %i18n, %events --
  charset     CDATA      #IMPLIED  -- char encoding of linked resource --
  name        CDATA      #IMPLIED  -- named link end --
  href        %URL;      #IMPLIED  -- URL for linked resource --
  target      CDATA      #IMPLIED  -- where to render resource --
  rel         CDATA      #IMPLIED  -- forward link types --
  rev         CDATA      #IMPLIED  -- reverse link types --
  accesskey   CDATA      #IMPLIED  -- accessibility key character --
  shape       %Shape     rect      -- for use with OBJECT SHAPES --
  coords      %Coords    #IMPLIED  -- for use with OBJECT SHAPES --
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  onfocus     %Script;   #IMPLIED  -- the element got the focus --
  onblur      %Script;   #IMPLIED  -- the element lost the focus --
  >

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

<!ELEMENT MAP - - (AREA)+ -- client-side image map -->
<!ATTLIST MAP
  %attrs;                          -- %coreattrs, %i18n, %events --
  name        CDATA      #IMPLIED
  >

<!ELEMENT AREA - O EMPTY -- client-side image map area -->
<!ATTLIST AREA
  %attrs;                          -- %coreattrs, %i18n, %events --
  shape       %Shape;    rect      -- controls interpretation of coords --
  coords      %Coords;   #IMPLIED  -- comma separated list of values --
  href        %URL;      #IMPLIED  -- this region acts as hypertext link --
  target      CDATA      #IMPLIED  -- where to render linked resource -- 
  nohref      (nohref)   #IMPLIED  -- this region has no action --
  alt         CDATA      #REQUIRED -- short description --
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  accesskey   CDATA      #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 -->
<!ATTLIST LINK
  %attrs;                          -- %coreattrs, %i18n, %events --
  charset     CDATA      #IMPLIED  -- char encoding of linked resource --
  href        %URL;      #IMPLIED  -- URL for linked resource --
  rel         CDATA      #IMPLIED  -- forward link types --
  rev         CDATA      #IMPLIED  -- reverse link types --
  type    %ContentType;  #IMPLIED  -- advisory Internet content type --
  media       CDATA      #IMPLIED  -- for rendering on these media --
  target      CDATA      #IMPLIED  -- where to render linked resource --
  >

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

<!ENTITY % Pixels "CDATA" -- integer representing length in pixels -->


<!-- To avoid problems with text-only UAs you need to provide
     a description with ALT, and avoid server-side image maps -->
<!ELEMENT IMG - O EMPTY            --  Embedded image -->
<!ATTLIST IMG
  %attrs;                          -- %coreattrs, %i18n, %events --
  src         %URL;      #REQUIRED -- URL of image to embed --
  alt         CDATA      #REQUIRED -- short description --
  longdesc    %URL;      #IMPLIED  -- link to long description --
  usemap      %URL;      #IMPLIED  -- use client-side image map --
  ismap       (ismap)    #IMPLIED  -- use server-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 ...
-->

<!ELEMENT OBJECT - - (PARAM | %inline; | %blocklevel;)* -- generic embedded object -->
<!ATTLIST OBJECT
  %attrs;                          -- %coreattrs, %i18n, %events --
  declare     (declare)  #IMPLIED  -- declare but don't instantiate flag --
  classid     %URL;      #IMPLIED  -- identifies an implementation --
  codebase    %URL;      #IMPLIED  -- some systems need an additional URL --
  data        %URL;      #IMPLIED  -- reference to object's data --
  type     %ContentType; #IMPLIED  -- Internet content type for data --
  codetype %ContentType; #IMPLIED  -- Internet content type for code --
  archive     %URL;      #IMPLIED  -- space separated archive list --
  standby     CDATA      #IMPLIED  -- message to show while loading --
  usemap      %URL;      #IMPLIED  -- reference to image map --
  shapes      (shapes)   #IMPLIED  -- object has shaped hypertext links --
  name        CDATA      #IMPLIED  -- submit as part of form --
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  %reserved;                       -- reserved for possible future use --
  >

<!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        CDATA      #IMPLIED  -- Internet media type --
  >


<!--=================== Horizontal Rule ==================================-->

<!ELEMENT HR - O EMPTY -- horizontal rule -->
<!ATTLIST HR
  %coreattrs;                      -- id, class, style, title --
  %events;
  >

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

<!ELEMENT P - O (%inline;)* -- paragraph -->
<!ATTLIST P
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

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

<!--
  There are six levels of headings from H1 (the most important)
  to H6 (the least important).
-->

<!ELEMENT (%heading;)  - -  (%inline;)* -- heading -->
<!ATTLIST (%heading;)
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!--=================== Preformatted Text ================================-->

<!-- excludes markup for images and changes in font size -->
<!ENTITY % pre.exclusion "IMG|OBJECT|BIG|SMALL|SUB|SUP">

<!ELEMENT PRE - - (%inline;)* -(%pre.exclusion;) -- preformatted text -->
<!ATTLIST PRE
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!--===================== Inline Quotes ==================================-->

<!ELEMENT Q - - (%inline;)* -- short inline quotation -->
<!ATTLIST Q
  %attrs;                          -- %coreattrs, %i18n, %events --
  cite        %URL;      #IMPLIED  -- URL for source document or msg --
  >

<!--=================== Block-like Quotes ================================-->

<!ELEMENT BLOCKQUOTE - - (%block;)+ -- long quotation -->
<!ATTLIST BLOCKQUOTE
  %attrs;                          -- %coreattrs, %i18n, %events --
  cite        %URL;      #IMPLIED  -- URL for source document or msg --
  >

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

<!-- definition lists - DT for term, DD for its definition -->

<!ELEMENT DL - -  (DT|DD)+ -- definition list -->
<!ATTLIST DL
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!ELEMENT DT - O  (%inline;)* -- definition term -->
<!ELEMENT DD - O  (%block;)+ -- definition description -->
<!ATTLIST (DT|DD)
  %attrs;                         -- %coreattrs, %i18n, %events --
  >


<!ELEMENT OL - -  (LI)+ -- ordered list -->
<!ATTLIST OL
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!-- Unordered Lists (UL) bullet styles -->

<!ELEMENT UL - -  (LI)+ -- unordered list -->
<!ATTLIST UL
  %attrs;                          -- %coreattrs, %i18n, %events --
  >



<!ELEMENT LI - O (%block;)+ -- list item -->
<!ATTLIST LI
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!--================ Forms ===============================================-->
<!ELEMENT FORM - - (%block;)+ -(FORM) -- interactive form -->
<!ATTLIST FORM
  %attrs;                          -- %coreattrs, %i18n, %events --
  action      %URL;      #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 --
  target      CDATA      #IMPLIED  -- where to render result --
  accept-charset CDATA   #IMPLIED  -- list of supported charsets --
  >

<!-- Each label must not contain more than ONE field -->
<!ELEMENT LABEL - - (%inline;)* -(LABEL) -- form field label text -->
<!ATTLIST LABEL
  %attrs;                          -- %coreattrs, %i18n, %events --
  for         IDREF      #IMPLIED  -- matches field ID value --
  disabled    (disabled) #IMPLIED  -- control is unavailable in this context --
  accesskey   CDATA      #IMPLIED  -- accessibility key character --
  onfocus     %Script;   #IMPLIED  -- the element got the focus --
  onblur      %Script;   #IMPLIED  -- the element lost the focus --
  >

<!ENTITY % InputType
  "(TEXT | PASSWORD | CHECKBOX |
    RADIO | SUBMIT | RESET |
    FILE | HIDDEN | IMAGE | BUTTON)"
   >

<!-- attribute name required for all but submit & reset -->
<!ELEMENT INPUT - O EMPTY -- form control -->
<!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  -- control is 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         %URL;      #IMPLIED  -- for fields with images --
  alt         CDATA      #IMPLIED  -- short description --
  usemap      %URL;      #IMPLIED  -- use client-side image map --
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  accesskey   CDATA      #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      CDATA      #IMPLIED  -- list of MIME types for file upload --
  %reserved;                       -- reserved for possible future use --
  >

<!ELEMENT SELECT - - (OPTION)+ -- option selector -->
<!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  -- control is 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 --
  >

<!ELEMENT OPTION - O (#PCDATA) -- selectable choice -->
<!ATTLIST OPTION
  %attrs;                          -- %coreattrs, %i18n, %events --
  selected  (selected)   #IMPLIED
  disabled  (disabled)   #IMPLIED  -- control is unavailable in this context --
  value       CDATA      #IMPLIED  -- defaults to element content --
  >

<!ELEMENT TEXTAREA - - (#PCDATA) -- multi-line text field -->
<!ATTLIST TEXTAREA
  %attrs;                          -- %coreattrs, %i18n, %events --
  name        CDATA      #IMPLIED
  rows        NUMBER     #REQUIRED
  cols        NUMBER     #REQUIRED
  disabled  (disabled)   #IMPLIED  -- control is unavailable in this context --
  readonly  (readonly)   #IMPLIED
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  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 --
  >

<!--
  #PCDATA is to solve the mixed content problem,
  per specification only whitespace is allowed there!
 -->
<!ELEMENT FIELDSET - - (#PCDATA,LEGEND,(%block;)+) -- form control group -->
<!ATTLIST FIELDSET
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!ELEMENT LEGEND - - (%inline;)* -- fieldset legend -->
<!ENTITY % LAlign "(top|bottom|left|right)">

<!ATTLIST LEGEND
  %attrs;                          -- %coreattrs, %i18n, %events --
  align       %LAlign;   #IMPLIED  -- relative to fieldset --
  accesskey   CDATA      #IMPLIED  -- accessibility key character --
  >

<!ELEMENT BUTTON - -
     (%inline; | %blocklevel;)+ -(A | %formctrl; | FORM | ISINDEX | FIELDSET)
     -- push button -->
<!ATTLIST BUTTON
  %attrs;                          -- %coreattrs, %i18n, %events --
  name        CDATA      #IMPLIED  -- for scripting/forms as submit button --
  value       CDATA      #IMPLIED  -- gets passed to server when submitted --
  type (button|submit|reset) submit -- for use as form submit/reset button --
  disabled   (disabled)  #IMPLIED  -- control is unavailable in this context --
  tabindex    NUMBER     #IMPLIED  -- position in tabbing order --
  accesskey   CDATA      #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 --
  >

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

<!-- 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.
-->
<!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       CDATA      #IMPLIED  -- alignment char, e.g. char=':' --
   charoff    CDATA      #IMPLIED  -- offset for alignment char --"
  >

<!-- vertical alignment attributes for cell contents -->
<!ENTITY % cellvalign
  "valign (top|middle|bottom|baseline) #IMPLIED"
  >

<!-- Only one CAPTION is allowed in each TABLE -->
<!ELEMENT TABLE - -
     (CAPTION?, ((COL*|COLGROUP*), THEAD?, TFOOT?, TBODY+), CAPTION?)>
<!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 (%block;)+ -- table header cell, table data cell -->

<!ATTLIST TABLE                 -- table element --
  %attrs;                          -- %coreattrs, %i18n, %events --
  summary     CDATA      #IMPLIED  -- purpose/structure for speech o/p --
  width       CDATA      #IMPLIED  -- table width relative to window --
  cols        NUMBER     #IMPLIED  -- used for immediate display mode --
  border      CDATA      #IMPLIED  -- controls frame width around table --
  frame       %TFrame;   #IMPLIED  -- which parts of table frame to include --
  rules       %TRules;   #IMPLIED  -- rulings between rows and cols --
  cellspacing CDATA      #IMPLIED  -- spacing between cells --
  cellpadding CDATA      #IMPLIED  -- spacing within cells --
  %reserved;                       -- reserved for possible future use --
  >

<!ENTITY % CAlign "(top|bottom|left|right)">

<!ATTLIST CAPTION               -- table caption --
  %attrs;                          -- %coreattrs, %i18n, %events --
  align       %CAlign;   #IMPLIED  -- relative to table --
  >

<!--
COLGROUP groups a set of COL elements. It allows you to group
several columns together.
-->
<!ATTLIST COLGROUP
  %attrs;                          -- %coreattrs, %i18n, %events --
  span        NUMBER     1         -- default number of columns in group --
  width       CDATA      #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 a given
 column or spanned 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
-->
<!ATTLIST COL                   -- column groups and properties --
  %attrs;                          -- %coreattrs, %i18n, %events --
  span        NUMBER     1         -- number of columns spanned by group --
  width       CDATA      #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 --
  >

<!ATTLIST (TH|TD)               -- header or data cell --
  %attrs;                          -- %coreattrs, %i18n, %events --
  abbr        CDATA      #IMPLIED  -- abbreviation for header cell --
  axis        CDATA      #IMPLIED  -- names groups of related headers--
  axes        IDREFS     #IMPLIED  -- list of id's for 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 --
  width       %Pixels;   #IMPLIED  -- suggested width for cell --
  height      %Pixels;   #IMPLIED  -- suggested height for cell --
  >


<!--================ Document Head =======================================-->
<!-- %head.misc; defined earlier on as "SCRIPT | STYLE | META | LINK" -->
<!ENTITY % head.content "TITLE & BASE?">

<!ELEMENT HEAD O O  (%head.content;) +(%head.misc;) -- document head -->
<!ATTLIST HEAD
  %i18n;                           -- lang, dir --
  profile     %URL;      #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>


<!ELEMENT BASE - O EMPTY -- document base URL -->
<!ATTLIST BASE
  href        %URL;      #REQUIRED
  target      CDATA      #IMPLIED  -- where to render linked resource --
  >

<!ELEMENT META - O EMPTY        -- generic metainformation -->
<!ATTLIST META
  %i18n;                           -- lang, dir, for use with content string --
  http-equiv  NAME       #IMPLIED  -- HTTP response header name  --
  name        NAME       #IMPLIED  -- metainformation name --
  content     CDATA      #REQUIRED -- associated information --
  scheme      CDATA      #IMPLIED  -- select form of content --
  >

<!ELEMENT STYLE - - CDATA      -- style info -->
<!ATTLIST STYLE
  %i18n;                           -- lang, dir, for use with title --
  type        CDATA      #REQUIRED -- Internet content type
                                      for style language --
  media       CDATA      #IMPLIED  -- designed for use with these media --
  title       CDATA      #IMPLIED  -- advisory title --
  >

<!ELEMENT SCRIPT - - CDATA      -- script statements -->
<!ATTLIST SCRIPT
  type        CDATA      #IMPLIED  -- Internet content type for
                                      script language --
  language    CDATA      #IMPLIED  -- predefined script language name --
  src         %URL;      #IMPLIED  -- URL for an external script --
  >

<!ELEMENT NOSCRIPT - - (%block;)+
  -- alternate content container for non script-based rendering -->
<!ATTLIST NOSCRIPT
  %attrs;                          -- %coreattrs, %i18n, %events --
  >

<!--================ Document Structure ==================================-->
<!ENTITY % version "version CDATA #FIXED '%HTML.Version;'">


<!ENTITY % html.content "HEAD, BODY">

<!ELEMENT HTML O O (%html.content;) -- document root element -->
<!ATTLIST HTML
  %version;
  %i18n;                           -- lang, dir --
  >