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Appendix E. The XHTML 1.0 DTD

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Appendix E. The XHTML 1.0 DTD

The XHTML 1.0 standard is formally defined as three XML Document Type Definitions (DTDs): the Strict DTD, the Transitional DTD, and the Frameset DTD. These DTDs correspond to the respective HTML 4.01 DTDs, defining the same elements and attributes using XML instead of SGML as the DTD authoring language.

The Strict DTD defines only those elements that are not deprecated in the HTML 4.01 standard. Ideally, everyone would create XHTML documents that conform to the Strict DTD. The Transitional DTD includes all those deprecated elements and more accurately reflects the HTML in use today, with many older elements still in common use. The Frameset DTD is identical to the Transitional DTD, with the exception that the document <body> is replaced by the <frameset> element.

Since the HTML Transitional DTD is the one upon which this book is based, it is only appropriate that we include the corresponding XHTML DTD. Note that we have reprinted this DTD verbatim and have not attempted to add extensions to it. Where our description and the DTD deviate, assume the DTD is correct.

<!--

   Extensible HTML version 1.0 Transitional DTD

   This is the same as HTML 4.0 Transitional except for

   changes due to the differences between XML and SGML.

   Namespace = http://www.w3.org/1999/xhtml

   For further information, see: http://www.w3.org/TR/xhtml1

   Copyright (c) 1998-2000 W3C (MIT, INRIA, Keio),

   All Rights Reserved. 

   This DTD module is identified by the PUBLIC and SYSTEM identifiers:

   PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

   SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"

   $Revision: 1.2 $

   $Date: 2002/10/07 21:48:25 $

-->

<!--================ Character mnemonic entities =========================-->

<!ENTITY % HTMLlat1 PUBLIC

   "-//W3C//ENTITIES Latin 1 for XHTML//EN"

   "xhtml-lat1.ent">

%HTMLlat1;

<!ENTITY % HTMLsymbol PUBLIC

   "-//W3C//ENTITIES Symbols for XHTML//EN"

   "xhtml-symbol.ent">

%HTMLsymbol;

<!ENTITY % HTMLspecial PUBLIC

   "-//W3C//ENTITIES Special for XHTML//EN"

   "xhtml-special.ent">

%HTMLspecial;

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

<!ENTITY % ContentType "CDATA">

    <!-- media type, as per [RFC2045] -->

<!ENTITY % ContentTypes "CDATA">

    <!-- comma-separated list of media types, as per [RFC2045] -->

<!ENTITY % Charset "CDATA">

    <!-- a character encoding, as per [RFC2045] -->

<!ENTITY % Charsets "CDATA">

    <!-- a space separated list of character encodings, as per [RFC2045] -->

<!ENTITY % LanguageCode "NMTOKEN">

    <!-- a language code, as per [RFC1766] -->

<!ENTITY % Character "CDATA">

    <!-- a single character from [ISO10646] -->

<!ENTITY % Number "CDATA">

    <!-- one or more digits -->

<!ENTITY % LinkTypes "CDATA">

    <!-- space-separated list of link types -->

<!ENTITY % MediaDesc "CDATA">

    <!-- single or comma-separated list of media descriptors -->

<!ENTITY % URI "CDATA">

    <!-- a Uniform Resource Identifier, see [RFC2396] -->

<!ENTITY % UriList "CDATA">

    <!-- a space separated list of Uniform Resource Identifiers -->

<!ENTITY % Datetime "CDATA">

    <!-- date and time information. ISO date format -->

<!ENTITY % Script "CDATA">

    <!-- script expression -->

<!ENTITY % StyleSheet "CDATA">

    <!-- style sheet data -->

<!ENTITY % Text "CDATA">

    <!-- used for titles etc. -->

<!ENTITY % FrameTarget "NMTOKEN">

    <!-- render in this frame -->

<!ENTITY % Length "CDATA">

    <!-- nn for pixels or nn% for percentage length -->

<!ENTITY % MultiLength "CDATA">

    <!-- pixel, percentage, or relative -->

<!ENTITY % MultiLengths "CDATA">

    <!-- comma-separated list of MultiLength -->

<!ENTITY % Pixels "CDATA">

    <!-- integer representing length in pixels -->

<!-- these are used for image maps -->

<!ENTITY % Shape "(rect|circle|poly|default)">

<!ENTITY % Coords "CDATA">

    <!-- comma separated list of lengths -->

<!-- used for object, applet, img, input and iframe -->

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

<!-- a color using sRGB: #RRGGBB as Hex values -->

<!ENTITY % Color "CDATA">

<!-- There are also 16 widely known color names with their sRGB values:

    Black  = #000000    Green  = #008000

    Silver = #C0C0C0    Lime   = #00FF00

    Gray   = #808080    Olive  = #808000

    White  = #FFFFFF    Yellow = #FFFF00

    Maroon = #800000    Navy   = #000080

    Red    = #FF0000    Blue   = #0000FF

    Purple = #800080    Teal   = #008080

    Fuchsia= #FF00FF    Aqua   = #00FFFF

-->

<!--=================== Generic Attributes ===============================-->

<!-- core attributes common to most elements

  id       document-wide unique id

  class    space separated list of classes

  style    associated style info

  title    advisory title/amplification

-->

<!ENTITY % coreattrs

 "id          ID             #IMPLIED

  class       CDATA          #IMPLIED

  style       %StyleSheet;   #IMPLIED

  title       %Text;         #IMPLIED"

  >

<!-- internationalization attributes

  lang        language code (backwards compatible)

  xml:lang    language code (as per XML 1.0 spec)

  dir         direction for weak/neutral text

-->

<!ENTITY % i18n

 "lang        %LanguageCode; #IMPLIED

  xml:lang    %LanguageCode; #IMPLIED

  dir         (ltr|rtl)      #IMPLIED"

  >

<!-- attributes for common UI events

  onclick     a pointer button was clicked

  ondblclick  a pointer button was double clicked

  onmousedown a pointer button was pressed down

  onmouseup   a pointer button was released

  onmousemove a pointer was moved onto the element

  onmouseout  a pointer was moved away from the element

  onkeypress  a key was pressed and released

  onkeydown   a key was pressed down

  onkeyup     a key was released

-->

<!ENTITY % events

 "onclick     %Script;       #IMPLIED

  ondblclick  %Script;       #IMPLIED

  onmousedown %Script;       #IMPLIED

  onmouseup   %Script;       #IMPLIED

  onmouseover %Script;       #IMPLIED

  onmousemove %Script;       #IMPLIED

  onmouseout  %Script;       #IMPLIED

  onkeypress  %Script;       #IMPLIED

  onkeydown   %Script;       #IMPLIED

  onkeyup     %Script;       #IMPLIED"

  >

<!-- attributes for elements that can get the focus

  accesskey   accessibility key character

  tabindex    position in tabbing order

  onfocus     the element got the focus

  onblur      the element lost the focus

-->

<!ENTITY % focus

 "accesskey   %Character;    #IMPLIED

  tabindex    %Number;       #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED"

  >

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

<!-- text alignment for p, div, h1-h6. The default is

     align="left" for ltr headings, "right" for rtl -->

<!ENTITY % TextAlign "align (left|center|right) #IMPLIED">

<!--=================== Text Elements ====================================-->

<!ENTITY % special

   "br | span | bdo | object | applet | img | map | iframe">

<!ENTITY % fontstyle "tt | i | b | big | small | u

                      | s | strike |font | basefont">

<!ENTITY % phrase "em | strong | dfn | code | q | sub | sup |

                   samp | kbd | var | cite | abbr | acronym">

<!ENTITY % inline.forms "input | select | textarea | label | button">

<!-- these can occur at block or inline level -->

<!ENTITY % misc "ins | del | script | noscript">

<!ENTITY % inline "a | %special; | %fontstyle; | %phrase; | %inline.forms;">

<!-- %Inline; covers inline or "text-level" elements -->

<!ENTITY % Inline "(#PCDATA | %inline; | %misc;)*">

<!--================== Block level elements ==============================-->

<!ENTITY % heading "h1|h2|h3|h4|h5|h6">

<!ENTITY % lists "ul | ol | dl | menu | dir">

<!ENTITY % blocktext "pre | hr | blockquote | address | center | noframes">

<!ENTITY % block

    "p | %heading; | div | %lists; | %blocktext; | isindex |fieldset | table">

<!ENTITY % Block "(%block; | form | %misc;)*">

<!-- %Flow; mixes Block and Inline and is used for list items etc. -->

<!ENTITY % Flow "(#PCDATA | %block; | form | %inline; | %misc;)*">

<!--================== Content models for exclusions =====================-->

<!-- a elements use %Inline; excluding a -->

<!ENTITY % a.content

   "(#PCDATA | %special; | %fontstyle; | %phrase; | %inline.forms; | %misc;)*">

<!-- pre uses %Inline excluding img, object, applet, big, small,

     sub, sup, font, or basefont -->

<!ENTITY % pre.content

   "(#PCDATA | a | br | span | bdo | map | tt | i | b | u | s |

      %phrase; | %inline.forms;)*">

<!-- form uses %Flow; excluding form -->

<!ENTITY % form.content "(#PCDATA | %block; | %inline; | %misc;)*">

<!-- button uses %Flow; but excludes a, form, form controls, iframe -->

<!ENTITY % button.content

   "(#PCDATA | p | %heading; | div | %lists; | %blocktext; |

      table | br | span | bdo | object | applet | img | map |

      %fontstyle; | %phrase; | %misc;)*">

<!--================ Document Structure ==================================-->

<!-- the namespace URI designates the document profile -->

<!ELEMENT html (head, body)>

<!ATTLIST html

  %i18n;

  xmlns       %URI;          #FIXED 'http://www.w3.org/1999/xhtml'

  >

<!--================ Document Head =======================================-->

<!ENTITY % head.misc "(script|style|meta|link|object|isindex)*">

<!-- content model is %head.misc; combined with a single

     title and an optional base element in any order -->

<!ELEMENT head (%head.misc;,

     ((title, %head.misc;, (base, %head.misc;)?) |

      (base, %head.misc;, (title, %head.misc;))))>

<!ATTLIST head

  %i18n;

  profile     %URI;          #IMPLIED

  >

<!-- 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)>

<!ATTLIST title %i18n;>

<!-- document base URI -->

<!ELEMENT base EMPTY>

<!ATTLIST base

  href        %URI;          #IMPLIED

  target      %FrameTarget;  #IMPLIED

  >

<!-- generic metainformation -->

<!ELEMENT meta EMPTY>

<!ATTLIST meta

  %i18n;

  http-equiv  CDATA          #IMPLIED

  name        CDATA          #IMPLIED

  content     CDATA          #REQUIRED

  scheme      CDATA          #IMPLIED

  >

<!--

  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 EMPTY>

<!ATTLIST link

  %attrs;

  charset     %Charset;      #IMPLIED

  href        %URI;          #IMPLIED

  hreflang    %LanguageCode; #IMPLIED

  type        %ContentType;  #IMPLIED

  rel         %LinkTypes;    #IMPLIED

  rev         %LinkTypes;    #IMPLIED

  media       %MediaDesc;    #IMPLIED

  target      %FrameTarget;  #IMPLIED

  >

<!-- style info, which may include CDATA sections -->

<!ELEMENT style (#PCDATA)>

<!ATTLIST style

  %i18n;

  type        %ContentType;  #REQUIRED

  media       %MediaDesc;    #IMPLIED

  title       %Text;         #IMPLIED

  xml:space   (preserve)     #FIXED 'preserve'

  >

<!-- script statements, which may include CDATA sections -->

<!ELEMENT script (#PCDATA)>

<!ATTLIST script

  charset     %Charset;      #IMPLIED

  type        %ContentType;  #REQUIRED

  language    CDATA          #IMPLIED

  src         %URI;          #IMPLIED

  defer       (defer)        #IMPLIED

  xml:space   (preserve)     #FIXED 'preserve'

  >

<!-- alternate content container for non script-based rendering -->

<!ELEMENT noscript %Flow;>

<!ATTLIST noscript

  %attrs;

  >

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

<!-- inline subwindow -->

<!ELEMENT iframe %Flow;>

<!ATTLIST iframe

  %coreattrs;

  longdesc    %URI;          #IMPLIED

  name        NMTOKEN        #IMPLIED

  src         %URI;          #IMPLIED

  frameborder (1|0)          "1"

  marginwidth %Pixels;       #IMPLIED

  marginheight %Pixels;      #IMPLIED

  scrolling   (yes|no|auto)  "auto"

  align       %ImgAlign;     #IMPLIED

  height      %Length;       #IMPLIED

  width       %Length;       #IMPLIED

  >

<!-- alternate content container for non frame-based rendering -->

<!ELEMENT noframes %Flow;>

<!ATTLIST noframes

  %attrs;

  >

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

<!ELEMENT body %Flow;>

<!ATTLIST body

  %attrs;

  onload      %Script;       #IMPLIED

  onunload    %Script;       #IMPLIED

  background  %URI;          #IMPLIED

  bgcolor     %Color;        #IMPLIED

  text        %Color;        #IMPLIED

  link        %Color;        #IMPLIED

  vlink       %Color;        #IMPLIED

  alink       %Color;        #IMPLIED

  >

<!ELEMENT div %Flow;>  <!-- generic language/style container -->

<!ATTLIST div

  %attrs;

  %TextAlign;

  >

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

<!ELEMENT p %Inline;>

<!ATTLIST p

  %attrs;

  %TextAlign;

  >

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

<!--

  There are six levels of headings from h1 (the most important)

  to h6 (the least important).

-->

<!ELEMENT h1  %Inline;>

<!ATTLIST h1

  %attrs;

  %TextAlign;

  >

<!ELEMENT h2 %Inline;>

<!ATTLIST h2

  %attrs;

  %TextAlign;

  >

<!ELEMENT h3 %Inline;>

<!ATTLIST h3

  %attrs;

  %TextAlign;

  >

<!ELEMENT h4 %Inline;>

<!ATTLIST h4

  %attrs;

  %TextAlign;

  >

<!ELEMENT h5 %Inline;>

<!ATTLIST h5

  %attrs;

  %TextAlign;

  >

<!ELEMENT h6 %Inline;>

<!ATTLIST h6

  %attrs;

  %TextAlign;

  >

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

<!-- Unordered list bullet styles -->

<!ENTITY % ULStyle "(disc|square|circle)">

<!-- Unordered list -->

<!ELEMENT ul (li)+>

<!ATTLIST ul

  %attrs;

  type        %ULStyle;     #IMPLIED

  compact     (compact)     #IMPLIED

  >

<!-- Ordered list numbering style

    1   arabic numbers      1, 2, 3, ...

    a   lower alpha         a, b, c, ...

    A   upper alpha         A, B, C, ...

    i   lower roman         i, ii, iii, ...

    I   upper roman         I, II, III, ...

    The style is applied to the sequence number which by default

    is reset to 1 for the first list item in an ordered list.

-->

<!ENTITY % OLStyle "CDATA">

<!-- Ordered (numbered) list -->

<!ELEMENT ol (li)+>

<!ATTLIST ol

  %attrs;

  type        %OLStyle;      #IMPLIED

  compact     (compact)      #IMPLIED

  start       %Number;       #IMPLIED

  >

<!-- single column list (DEPRECATED) --> 

<!ELEMENT menu (li)+>

<!ATTLIST menu

  %attrs;

  compact     (compact)     #IMPLIED

  >

<!-- multiple column list (DEPRECATED) --> 

<!ELEMENT dir (li)+>

<!ATTLIST dir

  %attrs;

  compact     (compact)     #IMPLIED

  >

<!-- LIStyle is constrained to: "(%ULStyle;|%OLStyle;)" -->

<!ENTITY % LIStyle "CDATA">

<!-- list item -->

<!ELEMENT li %Flow;>

<!ATTLIST li

  %attrs;

  type        %LIStyle;      #IMPLIED

  value       %Number;       #IMPLIED

  >

<!-- definition lists - dt for term, dd for its definition -->

<!ELEMENT dl (dt|dd)+>

<!ATTLIST dl

  %attrs;

  compact     (compact)      #IMPLIED

  >

<!ELEMENT dt %Inline;>

<!ATTLIST dt

  %attrs;

  >

<!ELEMENT dd %Flow;>

<!ATTLIST dd

  %attrs;

  >

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

<!-- information on author -->

<!ELEMENT address %Inline;>

<!ATTLIST address

  %attrs;

  >

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

<!ELEMENT hr EMPTY>

<!ATTLIST hr

  %attrs;

  align       (left|center|right) #IMPLIED

  noshade     (noshade)      #IMPLIED

  size        %Pixels;       #IMPLIED

  width       %Length;       #IMPLIED

  >

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

<!-- content is %Inline; excluding 

        "img|object|applet|big|small|sub|sup|font|basefont" -->

<!ELEMENT pre %pre.content;>

<!ATTLIST pre

  %attrs;

  width       %Number;      #IMPLIED

  xml:space   (preserve)    #FIXED 'preserve'

  >

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

<!ELEMENT blockquote %Flow;>

<!ATTLIST blockquote

  %attrs;

  cite        %URI;          #IMPLIED

  >

<!--=================== Text alignment ===================================-->

<!-- center content -->

<!ELEMENT center %Flow;>

<!ATTLIST center

  %attrs;

  >

<!--=================== Inserted/Deleted Text ============================-->

<!--

  ins/del are allowed in block and inline content, but its

  inappropriate to include block content within an ins element

  occurring in inline content.

-->

<!ELEMENT ins %Flow;>

<!ATTLIST ins

  %attrs;

  cite        %URI;          #IMPLIED

  datetime    %Datetime;     #IMPLIED

  >

<!ELEMENT del %Flow;>

<!ATTLIST del

  %attrs;

  cite        %URI;          #IMPLIED

  datetime    %Datetime;     #IMPLIED

  >

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

<!-- content is %Inline; except that anchors shouldn't be nested -->

<!ELEMENT a %a.content;>

<!ATTLIST a

  %attrs;

  charset     %Charset;      #IMPLIED

  type        %ContentType;  #IMPLIED

  name        NMTOKEN        #IMPLIED

  href        %URI;          #IMPLIED

  hreflang    %LanguageCode; #IMPLIED

  rel         %LinkTypes;    #IMPLIED

  rev         %LinkTypes;    #IMPLIED

  accesskey   %Character;    #IMPLIED

  shape       %Shape;        "rect"

  coords      %Coords;       #IMPLIED

  tabindex    %Number;       #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  target      %FrameTarget;  #IMPLIED

  >

<!--===================== Inline Elements ================================-->

<!ELEMENT span %Inline;> <!-- generic language/style container -->

<!ATTLIST span

  %attrs;

  >

<!ELEMENT bdo %Inline;>  <!-- I18N BiDi over-ride -->

<!ATTLIST bdo

  %coreattrs;

  %events;

  lang        %LanguageCode; #IMPLIED

  xml:lang    %LanguageCode; #IMPLIED

  dir         (ltr|rtl)      #REQUIRED

  >

<!ELEMENT br EMPTY>   <!-- forced line break -->

<!ATTLIST br

  %coreattrs;

  clear       (left|all|right|none) "none"

  >

<!ELEMENT em %Inline;>   <!-- emphasis -->

<!ATTLIST em %attrs;>

<!ELEMENT strong %Inline;>   <!-- strong emphasis -->

<!ATTLIST strong %attrs;>

<!ELEMENT dfn %Inline;>   <!-- definitional -->

<!ATTLIST dfn %attrs;>

<!ELEMENT code %Inline;>   <!-- program code -->

<!ATTLIST code %attrs;>

<!ELEMENT samp %Inline;>   <!-- sample -->

<!ATTLIST samp %attrs;>

<!ELEMENT kbd %Inline;>  <!-- something user would type -->

<!ATTLIST kbd %attrs;>

<!ELEMENT var %Inline;>   <!-- variable -->

<!ATTLIST var %attrs;>

<!ELEMENT cite %Inline;>   <!-- citation -->

<!ATTLIST cite %attrs;>

<!ELEMENT abbr %Inline;>   <!-- abbreviation -->

<!ATTLIST abbr %attrs;>

<!ELEMENT acronym %Inline;>   <!-- acronym -->

<!ATTLIST acronym %attrs;>

<!ELEMENT q %Inline;>   <!-- inlined quote -->

<!ATTLIST q

  %attrs;

  cite        %URI;          #IMPLIED

  >

<!ELEMENT sub %Inline;> <!-- subscript -->

<!ATTLIST sub %attrs;>

<!ELEMENT sup %Inline;> <!-- superscript -->

<!ATTLIST sup %attrs;>

<!ELEMENT tt %Inline;>   <!-- fixed pitch font -->

<!ATTLIST tt %attrs;>

<!ELEMENT i %Inline;>   <!-- italic font -->

<!ATTLIST i %attrs;>

<!ELEMENT b %Inline;>   <!-- bold font -->

<!ATTLIST b %attrs;>

<!ELEMENT big %Inline;>   <!-- bigger font -->

<!ATTLIST big %attrs;>

<!ELEMENT small %Inline;>   <!-- smaller font -->

<!ATTLIST small %attrs;>

<!ELEMENT u %Inline;>   <!-- underline -->

<!ATTLIST u %attrs;>

<!ELEMENT s %Inline;>   <!-- strike-through -->

<!ATTLIST s %attrs;>

<!ELEMENT strike %Inline;>   <!-- strike-through -->

<!ATTLIST strike %attrs;>

<!ELEMENT basefont EMPTY>  <!-- base font size -->

<!ATTLIST basefont

  id          ID             #IMPLIED

  size        CDATA          #REQUIRED

  color       %Color;        #IMPLIED

  face        CDATA          #IMPLIED

  >

<!ELEMENT font %Inline;> <!-- local change to font -->

<!ATTLIST font

  %coreattrs;

  %i18n;

  size        CDATA          #IMPLIED

  color       %Color;        #IMPLIED

  face        CDATA          #IMPLIED

  >

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

<!--

  object is used to embed objects as part of HTML pages.

  param elements should precede other content. Parameters

  can also be expressed as attribute/value pairs on the

  object element itself when brevity is desired.

-->

<!ELEMENT object (#PCDATA | param | %block; | form | %inline; | %misc;)*>

<!ATTLIST object

  %attrs;

  declare     (declare)      #IMPLIED

  classid     %URI;          #IMPLIED

  codebase    %URI;          #IMPLIED

  data        %URI;          #IMPLIED

  type        %ContentType;  #IMPLIED

  codetype    %ContentType;  #IMPLIED

  archive     %UriList;      #IMPLIED

  standby     %Text;         #IMPLIED

  height      %Length;       #IMPLIED

  width       %Length;       #IMPLIED

  usemap      %URI;          #IMPLIED

  name        NMTOKEN        #IMPLIED

  tabindex    %Number;       #IMPLIED

  align       %ImgAlign;     #IMPLIED

  border      %Pixels;       #IMPLIED

  hspace      %Pixels;       #IMPLIED

  vspace      %Pixels;       #IMPLIED

  >

<!--

  param is used to supply a named property value.

  In XML it would seem natural to follow RDF and support an

  abbreviated syntax where the param elements are replaced

  by attribute value pairs on the object start tag.

-->

<!ELEMENT param EMPTY>

<!ATTLIST param

  id          ID             #IMPLIED

  name        CDATA          #REQUIRED

  value       CDATA          #IMPLIED

  valuetype   (data|ref|object) "data"

  type        %ContentType;  #IMPLIED

  >

<!--=================== Java applet ==================================-->

<!--

  One of code or object attributes must be present.

  Place param elements before other content.

-->

<!ELEMENT applet (#PCDATA | param | %block; | form | %inline; | %misc;)*>

<!ATTLIST applet

  %coreattrs;

  codebase    %URI;          #IMPLIED

  archive     CDATA          #IMPLIED

  code        CDATA          #IMPLIED

  object      CDATA          #IMPLIED

  alt         %Text;         #IMPLIED

  name        NMTOKEN        #IMPLIED

  width       %Length;       #REQUIRED

  height      %Length;       #REQUIRED

  align       %ImgAlign;     #IMPLIED

  hspace      %Pixels;       #IMPLIED

  vspace      %Pixels;       #IMPLIED

  >

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

<!--

   To avoid accessibility problems for people who aren't

   able to see the image, you should provide a text

   description using the alt and longdesc attributes.

   In addition, avoid the use of server-side image maps.

-->

<!ELEMENT img EMPTY>

<!ATTLIST img

  %attrs;

  src         %URI;          #REQUIRED

  alt         %Text;         #REQUIRED

  name        NMTOKEN        #IMPLIED

  longdesc    %URI;          #IMPLIED

  height      %Length;       #IMPLIED

  width       %Length;       #IMPLIED

  usemap      %URI;          #IMPLIED

  ismap       (ismap)        #IMPLIED

  align       %ImgAlign;     #IMPLIED

  border      %Length;       #IMPLIED

  hspace      %Pixels;       #IMPLIED

  vspace      %Pixels;       #IMPLIED

  >

<!-- usemap points to a map element which may be in this document

  or an external document, although the latter is not widely supported -->

<!--================== 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 ((%block; | form | %misc;)+ | area+)>

<!ATTLIST map

  %i18n;

  %events;

  id          ID             #REQUIRED

  class       CDATA          #IMPLIED

  style       %StyleSheet;   #IMPLIED

  title       %Text;         #IMPLIED

  name        CDATA          #IMPLIED

  >

<!ELEMENT area EMPTY>

<!ATTLIST area

  %attrs;

  shape       %Shape;        "rect"

  coords      %Coords;       #IMPLIED

  href        %URI;          #IMPLIED

  nohref      (nohref)       #IMPLIED

  alt         %Text;         #REQUIRED

  tabindex    %Number;       #IMPLIED

  accesskey   %Character;    #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  target      %FrameTarget;  #IMPLIED

  >

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

<!ELEMENT form %form.content;>   <!-- forms shouldn't be nested -->

<!ATTLIST form

  %attrs;

  action      %URI;          #REQUIRED

  method      (get|post)     "get"

  name        NMTOKEN        #IMPLIED

  enctype     %ContentType;  "application/x-www-form-urlencoded"

  onsubmit    %Script;       #IMPLIED

  onreset     %Script;       #IMPLIED

  accept      %ContentTypes; #IMPLIED

  accept-charset %Charsets;  #IMPLIED

  target      %FrameTarget;  #IMPLIED

  >

<!--

  Each label must not contain more than ONE field

  Label elements shouldn't be nested.

-->

<!ELEMENT label %Inline;>

<!ATTLIST label

  %attrs;

  for         IDREF          #IMPLIED

  accesskey   %Character;    #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  >

<!ENTITY % InputType

  "(text | password | checkbox |

    radio | submit | reset |

    file | hidden | image | button)"

   >

<!-- the name attribute is required for all but submit & reset -->

<!ELEMENT input EMPTY>     <!-- form control -->

<!ATTLIST input

  %attrs;

  type        %InputType;    "text"

  name        CDATA          #IMPLIED

  value       CDATA          #IMPLIED

  checked     (checked)      #IMPLIED

  disabled    (disabled)     #IMPLIED

  readonly    (readonly)     #IMPLIED

  size        CDATA          #IMPLIED

  maxlength   %Number;       #IMPLIED

  src         %URI;          #IMPLIED

  alt         CDATA          #IMPLIED

  usemap      %URI;          #IMPLIED

  tabindex    %Number;       #IMPLIED

  accesskey   %Character;    #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  onselect    %Script;       #IMPLIED

  onchange    %Script;       #IMPLIED

  accept      %ContentTypes; #IMPLIED

  align       %ImgAlign;     #IMPLIED

  >

<!ELEMENT select (optgroup|option)+>  <!-- option selector -->

<!ATTLIST select

  %attrs;

  name        CDATA          #IMPLIED

  size        %Number;       #IMPLIED

  multiple    (multiple)     #IMPLIED

  disabled    (disabled)     #IMPLIED

  tabindex    %Number;       #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  onchange    %Script;       #IMPLIED

  >

<!ELEMENT optgroup (option)+>   <!-- option group -->

<!ATTLIST optgroup

  %attrs;

  disabled    (disabled)     #IMPLIED

  label       %Text;         #REQUIRED

  >

<!ELEMENT option (#PCDATA)>     <!-- selectable choice -->

<!ATTLIST option

  %attrs;

  selected    (selected)     #IMPLIED

  disabled    (disabled)     #IMPLIED

  label       %Text;         #IMPLIED

  value       CDATA          #IMPLIED

  >

<!ELEMENT textarea (#PCDATA)>     <!-- multi-line text field -->

<!ATTLIST textarea

  %attrs;

  name        CDATA          #IMPLIED

  rows        %Number;       #REQUIRED

  cols        %Number;       #REQUIRED

  disabled    (disabled)     #IMPLIED

  readonly    (readonly)     #IMPLIED

  tabindex    %Number;       #IMPLIED

  accesskey   %Character;    #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  onselect    %Script;       #IMPLIED

  onchange    %Script;       #IMPLIED

  >

<!--

  The fieldset element is used to group form fields.

  Only one legend element should occur in the content

  and if present should only be preceded by whitespace.

-->

<!ELEMENT fieldset (#PCDATA | legend | %block; | form | %inline; | %misc;)*>

<!ATTLIST fieldset

  %attrs;

  >

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

<!ELEMENT legend %Inline;>     <!-- fieldset label -->

<!ATTLIST legend

  %attrs;

  accesskey   %Character;    #IMPLIED

  align       %LAlign;       #IMPLIED

  >

<!--

 Content is %Flow; excluding a, form, form controls, iframe

--> 

<!ELEMENT button %button.content;>  <!-- push button -->

<!ATTLIST button

  %attrs;

  name        CDATA          #IMPLIED

  value       CDATA          #IMPLIED

  type        (button|submit|reset) "submit"

  disabled    (disabled)     #IMPLIED

  tabindex    %Number;       #IMPLIED

  accesskey   %Character;    #IMPLIED

  onfocus     %Script;       #IMPLIED

  onblur      %Script;       #IMPLIED

  >

<!-- single-line text input control (DEPRECATED) -->

<!ELEMENT isindex EMPTY>

<!ATTLIST isindex

  %coreattrs;

  %i18n;

  prompt      %Text;         #IMPLIED

  >

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

<!-- Derived from 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.

-->

<!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

  char        alignment char, e.g. char=':'

  charoff     offset for alignment char

-->

<!ENTITY % cellhalign

  "align      (left|center|right|justify|char) #IMPLIED

   char       %Character;    #IMPLIED

   charoff    %Length;       #IMPLIED"

  >

<!-- vertical alignment attributes for cell contents -->

<!ENTITY % cellvalign

  "valign     (top|middle|bottom|baseline) #IMPLIED"

  >

<!ELEMENT table

     (caption?, (col*|colgroup*), thead?, tfoot?, (tbody+|tr+))>

<!ELEMENT caption  %Inline;>

<!ELEMENT thead    (tr)+>

<!ELEMENT tfoot    (tr)+>

<!ELEMENT tbody    (tr)+>

<!ELEMENT colgroup (col)*>

<!ELEMENT col      EMPTY>

<!ELEMENT tr       (th|td)+>

<!ELEMENT th       %Flow;>

<!ELEMENT td       %Flow;>

<!ATTLIST table

  %attrs;

  summary     %Text;         #IMPLIED

  width       %Length;       #IMPLIED

  border      %Pixels;       #IMPLIED

  frame       %TFrame;       #IMPLIED

  rules       %TRules;       #IMPLIED

  cellspacing %Length;       #IMPLIED

  cellpadding %Length;       #IMPLIED

  align       %TAlign;       #IMPLIED

  bgcolor     %Color;        #IMPLIED

  >

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

<!ATTLIST caption

  %attrs;

  align       %CAlign;       #IMPLIED

  >

<!--

colgroup groups a set of col elements. It allows you to group

several semantically related columns together.

-->

<!ATTLIST colgroup

  %attrs;

  span        %Number;       "1"

  width       %MultiLength;  #IMPLIED

  %cellhalign;

  %cellvalign;

  >

<!--

 col elements define the alignment properties for cells in

 one or more columns.

 The width attribute specifies the width of the columns, e.g.

     width=64        width in screen pixels

     width=0.5*      relative width of 0.5

 The span attribute causes the attributes of one

 col element to apply to more than one column.

-->

<!ATTLIST col

  %attrs;

  span        %Number;       "1"

  width       %MultiLength;  #IMPLIED

  %cellhalign;

  %cellvalign;

  >

<!--

    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

  %attrs;

  %cellhalign;

  %cellvalign;

  >

<!ATTLIST tfoot

  %attrs;

  %cellhalign;

  %cellvalign;

  >

<!ATTLIST tbody

  %attrs;

  %cellhalign;

  %cellvalign;

  >

<!ATTLIST tr

  %attrs;

  %cellhalign;

  %cellvalign;

  bgcolor     %Color;        #IMPLIED

  >

<!-- Scope is simpler than headers attribute for common tables -->

<!ENTITY % Scope "(row|col|rowgroup|colgroup)">

<!-- th is for headers, td for data and for cells acting as both -->

<!ATTLIST th

  %attrs;

  abbr        %Text;         #IMPLIED

  axis        CDATA          #IMPLIED

  headers     IDREFS         #IMPLIED

  scope       %Scope;        #IMPLIED

  rowspan     %Number;       "1"

  colspan     %Number;       "1"

  %cellhalign;

  %cellvalign;

  nowrap      (nowrap)       #IMPLIED

  bgcolor     %Color;        #IMPLIED

  width       %Pixels;       #IMPLIED

  height      %Pixels;       #IMPLIED

  >

<!ATTLIST td

  %attrs;

  abbr        %Text;         #IMPLIED

  axis        CDATA          #IMPLIED

  headers     IDREFS         #IMPLIED

  scope       %Scope;        #IMPLIED

  rowspan     %Number;       "1"

  colspan     %Number;       "1"

  %cellhalign;

  %cellvalign;

  nowrap      (nowrap)       #IMPLIED

  bgcolor     %Color;        #IMPLIED

  width       %Pixels;       #IMPLIED

  height      %Pixels;       #IMPLIED

  >
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