XHTML 1.0 - DTDs

# A. DTDs

Contents

This appendix is normative.

These DTDs and entity sets form a normative part of this specification. The complete set of DTD files together with an XML declaration and SGML Open Catalog is included in the zip file and the gzip'd tar file for this specification. Users looking for local copies of the DTDs to work with should download and use those archives rather than using the specific DTDs referenced below.

## A.1. Document Type Definitions

These DTDs approximate the HTML 4 DTDs. The W3C recommends that you use the authoritative versions of these DTDs at their defined SYSTEM identifiers when validating content. If you need to use these DTDs locally you should download one of the archives of this version. For completeness, the normative versions of the DTDs are included here:

### A.1.1. XHTML-1.0-Strict

The file DTD/xhtml1-strict.dtd is a normative part of this specification. Its annotated contents are included here for completeness.

    <!--
       Extensible HTML version 1.0 Strict DTD

       This is the same as HTML 4 Strict 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) 1998-2002 W3C (MIT, INRIA, Keio),
       All Rights Reserved.

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

       PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
       SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"

       $Revision: 1.24 $
       $Date: 2002/07/31 19:34:51 $

    -->

    <!--================ 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 [RFC3066] -->

    <!ENTITY % Character "CDATA">
        <!-- a single character, as per section 2.2 of [XML] -->

    <!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 % Length "CDATA">
        <!-- nn for pixels or nn% for percentage length -->

    <!ENTITY % MultiLength "CDATA">
        <!-- pixel, percentage, or relative -->

    <!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 -->

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

    <!ENTITY % special.pre
       "br | span | bdo | map">

    <!ENTITY % special
       "%special.pre; | object | img ">

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

    <!ENTITY % phrase "em | strong | dfn | code | q |
                       samp | kbd | var | cite | abbr | acronym | sub | sup ">

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

    <!-- these can occur at block or inline level -->
    <!ENTITY % misc.inline "ins | del | script">

    <!-- these can only occur at block level -->
    <!ENTITY % misc "noscript | %misc.inline;">

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

    <!-- %Inline; covers inline or "text-level" elements -->
    <!ENTITY % Inline "(#PCDATA | %inline; | %misc.inline;)*">

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

    <!ENTITY % heading "h1|h2|h3|h4|h5|h6">
    <!ENTITY % lists "ul | ol | dl">
    <!ENTITY % blocktext "pre | hr | blockquote | address">

    <!ENTITY % block
         "p | %heading; | div | %lists; | %blocktext; | 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.inline;)*">

    <!-- pre uses %Inline excluding big, small, sup or sup -->

    <!ENTITY % pre.content
       "(#PCDATA | a | %fontstyle; | %phrase; | %special.pre; | %misc.inline;
          | %inline.forms;)*">

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

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

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

    <!ENTITY % button.content
       "(#PCDATA | p | %heading; | div | %lists; | %blocktext; |
        table | %special; | %fontstyle; | %phrase; | %misc;)*">

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

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

    <!ELEMENT html (head, body)>
    <!ATTLIST html
      %i18n;
      id          ID             #IMPLIED
      xmlns       %URI;          #FIXED 'http://www.w3.org/1999/xhtml'
      >

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

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

    <!-- 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;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      >

    <!-- document base URI -->

    <!ELEMENT base EMPTY>
    <!ATTLIST base
      href        %URI;          #REQUIRED
      id          ID             #IMPLIED
      >

    <!-- generic metainformation -->
    <!ELEMENT meta EMPTY>
    <!ATTLIST meta
      %i18n;
      id          ID             #IMPLIED
      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
      >

    <!-- style info, which may include CDATA sections -->
    <!ELEMENT style (#PCDATA)>
    <!ATTLIST style
      %i18n;
      id          ID             #IMPLIED
      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
      id          ID             #IMPLIED
      charset     %Charset;      #IMPLIED
      type        %ContentType;  #REQUIRED
      src         %URI;          #IMPLIED
      defer       (defer)        #IMPLIED
      xml:space   (preserve)     #FIXED 'preserve'
      >

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

    <!ELEMENT noscript %Block;>
    <!ATTLIST noscript
      %attrs;
      >

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

    <!ELEMENT body %Block;>
    <!ATTLIST body
      %attrs;
      onload          %Script;   #IMPLIED
      onunload        %Script;   #IMPLIED
      >

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

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

    <!ELEMENT p %Inline;>
    <!ATTLIST p
      %attrs;
      >

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

    <!--
      There are six levels of headings from h1 (the most important)
      to h6 (the least important).
    -->

    <!ELEMENT h1  %Inline;>
    <!ATTLIST h1
       %attrs;
       >

    <!ELEMENT h2 %Inline;>
    <!ATTLIST h2
       %attrs;
       >

    <!ELEMENT h3 %Inline;>
    <!ATTLIST h3
       %attrs;
       >

    <!ELEMENT h4 %Inline;>
    <!ATTLIST h4
       %attrs;
       >

    <!ELEMENT h5 %Inline;>
    <!ATTLIST h5
       %attrs;
       >

    <!ELEMENT h6 %Inline;>
    <!ATTLIST h6
       %attrs;
       >

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

    <!-- Unordered list -->

    <!ELEMENT ul (li)+>
    <!ATTLIST ul
      %attrs;
      >

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

    <!ELEMENT ol (li)+>
    <!ATTLIST ol
      %attrs;
      >

    <!-- list item -->

    <!ELEMENT li %Flow;>
    <!ATTLIST li
      %attrs;
      >

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

    <!ELEMENT dl (dt|dd)+>
    <!ATTLIST dl
      %attrs;
      >

    <!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;
      >

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

    <!-- content is %Inline; excluding "img|object|big|small|sub|sup" -->

    <!ELEMENT pre %pre.content;>
    <!ATTLIST pre
      %attrs;
      xml:space (preserve) #FIXED 'preserve'
      >

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

    <!ELEMENT blockquote %Block;>
    <!ATTLIST blockquote
      %attrs;
      cite        %URI;          #IMPLIED
      >

    <!--=================== 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;
      %focus;
      charset     %Charset;      #IMPLIED
      type        %ContentType;  #IMPLIED
      name        NMTOKEN        #IMPLIED
      href        %URI;          #IMPLIED
      hreflang    %LanguageCode; #IMPLIED
      rel         %LinkTypes;    #IMPLIED
      rev         %LinkTypes;    #IMPLIED
      shape       %Shape;        "rect"
      coords      %Coords;       #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;
      >

    <!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;>

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

    <!--
      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          #IMPLIED
      value       CDATA          #IMPLIED
      valuetype   (data|ref|object) "data"
      type        %ContentType;  #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.
       Note that in this DTD there is no name attribute. That
       is only available in the transitional and frameset DTD.
    -->

    <!ELEMENT img EMPTY>
    <!ATTLIST img
      %attrs;
      src         %URI;          #REQUIRED
      alt         %Text;         #REQUIRED
      longdesc    %URI;          #IMPLIED
      height      %Length;       #IMPLIED
      width       %Length;       #IMPLIED
      usemap      %URI;          #IMPLIED
      ismap       (ismap)        #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        NMTOKEN        #IMPLIED
      >

    <!ELEMENT area EMPTY>
    <!ATTLIST area
      %attrs;
      %focus;
      shape       %Shape;        "rect"
      coords      %Coords;       #IMPLIED
      href        %URI;          #IMPLIED
      nohref      (nohref)       #IMPLIED
      alt         %Text;         #REQUIRED
      >

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

    <!ATTLIST form
      %attrs;
      action      %URI;          #REQUIRED
      method      (get|post)     "get"
      enctype     %ContentType;  "application/x-www-form-urlencoded"
      onsubmit    %Script;       #IMPLIED
      onreset     %Script;       #IMPLIED
      accept      %ContentTypes; #IMPLIED
      accept-charset %Charsets;  #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;
      %focus;
      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
      onselect    %Script;       #IMPLIED
      onchange    %Script;       #IMPLIED
      accept      %ContentTypes; #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;
      %focus;
      name        CDATA          #IMPLIED
      rows        %Number;       #REQUIRED
      cols        %Number;       #REQUIRED
      disabled    (disabled)     #IMPLIED
      readonly    (readonly)     #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;
      >

    <!ELEMENT legend %Inline;>     <!-- fieldset label -->
    <!ATTLIST legend
      %attrs;
      accesskey   %Character;    #IMPLIED
      >

    <!--
     Content is %Flow; excluding a, form and form controls
    -->
    <!ELEMENT button %button.content;>  <!-- push button -->
    <!ATTLIST button
      %attrs;
      %focus;
      name        CDATA          #IMPLIED
      value       CDATA          #IMPLIED
      type        (button|submit|reset) "submit"
      disabled    (disabled)     #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 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
      >

    <!ATTLIST caption
      %attrs;
      >

    <!--
    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;
      >

    <!-- 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;
      >

    <!ATTLIST td
      %attrs;
      abbr        %Text;         #IMPLIED
      axis        CDATA          #IMPLIED
      headers     IDREFS         #IMPLIED
      scope       %Scope;        #IMPLIED
      rowspan     %Number;       "1"
      colspan     %Number;       "1"
      %cellhalign;
      %cellvalign;
      >

### A.1.2. XHTML-1.0-Transitional

The file DTD/xhtml1-transitional.dtd is a normative part of this specification. Its annotated contents are included here for completeness.

    <!--
       Extensible HTML version 1.0 Transitional DTD

       This is the same as HTML 4 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) 1998-2002 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: 1.27 $
       $Date: 2002/08/01 18:16:48 $

    -->

    <!--================ 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 [RFC3066] -->

    <!ENTITY % Character "CDATA">
        <!-- a single character, as per section 2.2 of [XML] -->

    <!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 % 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|justify) #IMPLIED">

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

    <!ENTITY % special.extra
       "object | applet | img | map | iframe">

    <!ENTITY % special.basic
        "br | span | bdo">

    <!ENTITY % special
       "%special.basic; | %special.extra;">

    <!ENTITY % fontstyle.extra "big | small | font | basefont">

    <!ENTITY % fontstyle.basic "tt | i | b | u
                          | s | strike ">

    <!ENTITY % fontstyle "%fontstyle.basic; | %fontstyle.extra;">

    <!ENTITY % phrase.extra "sub | sup">
    <!ENTITY % phrase.basic "em | strong | dfn | code | q |
                       samp | kbd | var | cite | abbr | acronym">

    <!ENTITY % phrase "%phrase.basic; | %phrase.extra;">

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

    <!-- these can occur at block or inline level -->
    <!ENTITY % misc.inline "ins | del | script">

    <!-- these can only occur at block level -->
    <!ENTITY % misc "noscript | %misc.inline;">

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

    <!-- %Inline; covers inline or "text-level" elements -->
    <!ENTITY % Inline "(#PCDATA | %inline; | %misc.inline;)*">

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

    <!-- %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.inline;)*">

    <!-- pre uses %Inline excluding img, object, applet, big, small,
         font, or basefont -->

    <!ENTITY % pre.content
       "(#PCDATA | a | %special.basic; | %fontstyle.basic; | %phrase.basic; |
           %inline.forms; | %misc.inline;)*">

    <!-- 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;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      >

    <!-- document base URI -->

    <!ELEMENT base EMPTY>
    <!ATTLIST base
      id          ID             #IMPLIED
      href        %URI;          #IMPLIED
      target      %FrameTarget;  #IMPLIED
      >

    <!-- generic metainformation -->
    <!ELEMENT meta EMPTY>
    <!ATTLIST meta
      %i18n;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      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
      id          ID             #IMPLIED
      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 (#PCDATA | %inline; | %misc.inline; | p)*>
    <!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;
      %focus;
      charset     %Charset;      #IMPLIED
      type        %ContentType;  #IMPLIED
      name        NMTOKEN        #IMPLIED
      href        %URI;          #IMPLIED
      hreflang    %LanguageCode; #IMPLIED
      rel         %LinkTypes;    #IMPLIED
      rev         %LinkTypes;    #IMPLIED
      shape       %Shape;        "rect"
      coords      %Coords;       #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;
      %focus;
      shape       %Shape;        "rect"
      coords      %Coords;       #IMPLIED
      href        %URI;          #IMPLIED
      nohref      (nohref)       #IMPLIED
      alt         %Text;         #REQUIRED
      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;
      %focus;
      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
      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;
      %focus;
      name        CDATA          #IMPLIED
      rows        %Number;       #REQUIRED
      cols        %Number;       #REQUIRED
      disabled    (disabled)     #IMPLIED
      readonly    (readonly)     #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;
      %focus;
      name        CDATA          #IMPLIED
      value       CDATA          #IMPLIED
      type        (button|submit|reset) "submit"
      disabled    (disabled)     #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       %Length;       #IMPLIED
      height      %Length;       #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       %Length;       #IMPLIED
      height      %Length;       #IMPLIED
      >

### A.1.3. XHTML-1.0-Frameset

The file DTD/xhtml1-frameset.dtd is a normative part of this specification. Its annotated contents are included here for completeness.

    <!--
       Extensible HTML version 1.0 Frameset DTD

       This is the same as HTML 4 Frameset 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) 1998-2002 W3C (MIT, INRIA, Keio),
       All Rights Reserved.

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

       PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
       SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"

       $Revision: 1.26 $
       $Date: 2002/08/01 18:16:48 $

    -->

    <!--================ 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 [RFC3066] -->

    <!ENTITY % Character "CDATA">
        <!-- a single character, as per section 2.2 of [XML] -->

    <!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|justify) #IMPLIED">

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

    <!ENTITY % special.extra
       "object | applet | img | map | iframe">

    <!ENTITY % special.basic
        "br | span | bdo">

    <!ENTITY % special
       "%special.basic; | %special.extra;">

    <!ENTITY % fontstyle.extra "big | small | font | basefont">

    <!ENTITY % fontstyle.basic "tt | i | b | u
                          | s | strike ">

    <!ENTITY % fontstyle "%fontstyle.basic; | %fontstyle.extra;">

    <!ENTITY % phrase.extra "sub | sup">
    <!ENTITY % phrase.basic "em | strong | dfn | code | q |
                       samp | kbd | var | cite | abbr | acronym">

    <!ENTITY % phrase "%phrase.basic; | %phrase.extra;">

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

    <!-- these can occur at block or inline level -->
    <!ENTITY % misc.inline "ins | del | script">

    <!-- these can only occur at block level -->
    <!ENTITY % misc "noscript | %misc.inline;">

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

    <!-- %Inline; covers inline or "text-level" elements -->
    <!ENTITY % Inline "(#PCDATA | %inline; | %misc.inline;)*">

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

    <!ENTITY % block
        "p | %heading; | div | %lists; | %blocktext; | isindex | fieldset | table">

    <!-- %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.inline;)*">

    <!-- pre uses %Inline excluding img, object, applet, big, small,
         sub, sup, font, or basefont -->

    <!ENTITY % pre.content
       "(#PCDATA | a | %special.basic; | %fontstyle.basic; | %phrase.basic; |
           %inline.forms; | %misc.inline;)*">

    <!-- 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, frameset)>
    <!ATTLIST html
      %i18n;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      >

    <!-- document base URI -->

    <!ELEMENT base EMPTY>
    <!ATTLIST base
      id          ID             #IMPLIED
      href        %URI;          #IMPLIED
      target      %FrameTarget;  #IMPLIED
      >

    <!-- generic metainformation -->
    <!ELEMENT meta EMPTY>
    <!ATTLIST meta
      %i18n;
      id          ID             #IMPLIED
      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;
      id          ID             #IMPLIED
      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
      id          ID             #IMPLIED
      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 =======================================-->

    <!-- only one noframes element permitted per document -->

    <!ELEMENT frameset (frameset|frame|noframes)*>
    <!ATTLIST frameset
      %coreattrs;
      rows        %MultiLengths; #IMPLIED
      cols        %MultiLengths; #IMPLIED
      onload      %Script;       #IMPLIED
      onunload    %Script;       #IMPLIED
      >

    <!-- reserved frame names start with "_" otherwise starts with letter -->

    <!-- tiled window within frameset -->

    <!ELEMENT frame EMPTY>
    <!ATTLIST frame
      %coreattrs;
      longdesc    %URI;          #IMPLIED
      name        NMTOKEN        #IMPLIED
      src         %URI;          #IMPLIED
      frameborder (1|0)          "1"
      marginwidth %Pixels;       #IMPLIED
      marginheight %Pixels;      #IMPLIED
      noresize    (noresize)     #IMPLIED
      scrolling   (yes|no|auto)  "auto"
      >

    <!-- 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 (body)>
    <!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 (#PCDATA | %inline; | %misc.inline; | p)*>
    <!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;
      %focus;
      charset     %Charset;      #IMPLIED
      type        %ContentType;  #IMPLIED
      name        NMTOKEN        #IMPLIED
      href        %URI;          #IMPLIED
      hreflang    %LanguageCode; #IMPLIED
      rel         %LinkTypes;    #IMPLIED
      rev         %LinkTypes;    #IMPLIED
      shape       %Shape;        "rect"
      coords      %Coords;       #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      %Pixels;       #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        NMTOKEN        #IMPLIED
      >

    <!ELEMENT area EMPTY>
    <!ATTLIST area
      %attrs;
      %focus;
      shape       %Shape;        "rect"
      coords      %Coords;       #IMPLIED
      href        %URI;          #IMPLIED
      nohref      (nohref)       #IMPLIED
      alt         %Text;         #REQUIRED
      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;
      %focus;
      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
      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;
      %focus;
      name        CDATA          #IMPLIED
      rows        %Number;       #REQUIRED
      cols        %Number;       #REQUIRED
      disabled    (disabled)     #IMPLIED
      readonly    (readonly)     #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;
      %focus;
      name        CDATA          #IMPLIED
      value       CDATA          #IMPLIED
      type        (button|submit|reset) "submit"
      disabled    (disabled)     #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
      >

## A.2. Entity Sets

The XHTML entity sets are the same as for HTML 4, but have been modified to be valid XML 1.0 entity declarations. Note the entity for the Euro currency sign (`&euro;` or `&#8364;` or `&#x20AC;`) is defined as part of the special characters.

### A.2.1. Latin-1 characters

The file DTD/xhtml-lat1.ent is a normative part of this specification. Its annotated contents are included here for completeness.

    <!-- Portions (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 % HTMLlat1 PUBLIC
           "-//W3C//ENTITIES Latin 1 for XHTML//EN"
           "http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent">
        %HTMLlat1;
    -->

    <!ENTITY nbsp   "&#160;"> <!-- no-break space = non-breaking space,
                                      U+00A0 ISOnum -->
    <!ENTITY iexcl  "&#161;"> <!-- inverted exclamation mark, U+00A1 ISOnum -->
    <!ENTITY cent   "&#162;"> <!-- cent sign, U+00A2 ISOnum -->
    <!ENTITY pound  "&#163;"> <!-- pound sign, U+00A3 ISOnum -->
    <!ENTITY curren "&#164;"> <!-- currency sign, U+00A4 ISOnum -->
    <!ENTITY yen    "&#165;"> <!-- yen sign = yuan sign, U+00A5 ISOnum -->
    <!ENTITY brvbar "&#166;"> <!-- broken bar = broken vertical bar,
                                      U+00A6 ISOnum -->
    <!ENTITY sect   "&#167;"> <!-- section sign, U+00A7 ISOnum -->
    <!ENTITY uml    "&#168;"> <!-- diaeresis = spacing diaeresis,
                                      U+00A8 ISOdia -->
    <!ENTITY copy   "&#169;"> <!-- copyright sign, U+00A9 ISOnum -->
    <!ENTITY ordf   "&#170;"> <!-- feminine ordinal indicator, U+00AA ISOnum -->
    <!ENTITY laquo  "&#171;"> <!-- left-pointing double angle quotation mark
                                      = left pointing guillemet, U+00AB ISOnum -->
    <!ENTITY not    "&#172;"> <!-- not sign = angled dash,
                                      U+00AC ISOnum -->
    <!ENTITY shy    "&#173;"> <!-- soft hyphen = discretionary hyphen,
                                      U+00AD ISOnum -->
    <!ENTITY reg    "&#174;"> <!-- registered sign = registered trade mark sign,
                                      U+00AE ISOnum -->
    <!ENTITY macr   "&#175;"> <!-- macron = spacing macron = overline
                                      = APL overbar, U+00AF ISOdia -->
    <!ENTITY deg    "&#176;"> <!-- degree sign, U+00B0 ISOnum -->
    <!ENTITY plusmn "&#177;"> <!-- plus-minus sign = plus-or-minus sign,
                                      U+00B1 ISOnum -->
    <!ENTITY sup2   "&#178;"> <!-- superscript two = superscript digit two
                                      = squared, U+00B2 ISOnum -->
    <!ENTITY sup3   "&#179;"> <!-- superscript three = superscript digit three
                                      = cubed, U+00B3 ISOnum -->
    <!ENTITY acute  "&#180;"> <!-- acute accent = spacing acute,
                                      U+00B4 ISOdia -->
    <!ENTITY micro  "&#181;"> <!-- micro sign, U+00B5 ISOnum -->
    <!ENTITY para   "&#182;"> <!-- pilcrow sign = paragraph sign,
                                      U+00B6 ISOnum -->
    <!ENTITY middot "&#183;"> <!-- middle dot = Georgian comma
                                      = Greek middle dot, U+00B7 ISOnum -->
    <!ENTITY cedil  "&#184;"> <!-- cedilla = spacing cedilla, U+00B8 ISOdia -->
    <!ENTITY sup1   "&#185;"> <!-- superscript one = superscript digit one,
                                      U+00B9 ISOnum -->
    <!ENTITY ordm   "&#186;"> <!-- masculine ordinal indicator,
                                      U+00BA ISOnum -->
    <!ENTITY raquo  "&#187;"> <!-- right-pointing double angle quotation mark
                                      = right pointing guillemet, U+00BB ISOnum -->
    <!ENTITY frac14 "&#188;"> <!-- vulgar fraction one quarter
                                      = fraction one quarter, U+00BC ISOnum -->
    <!ENTITY frac12 "&#189;"> <!-- vulgar fraction one half
                                      = fraction one half, U+00BD ISOnum -->
    <!ENTITY frac34 "&#190;"> <!-- vulgar fraction three quarters
                                      = fraction three quarters, U+00BE ISOnum -->
    <!ENTITY iquest "&#191;"> <!-- inverted question mark
                                      = turned question mark, U+00BF ISOnum -->
    <!ENTITY Agrave "&#192;"> <!-- latin capital letter A with grave
                                      = latin capital letter A grave,
                                      U+00C0 ISOlat1 -->
    <!ENTITY Aacute "&#193;"> <!-- latin capital letter A with acute,
                                      U+00C1 ISOlat1 -->
    <!ENTITY Acirc  "&#194;"> <!-- latin capital letter A with circumflex,
                                      U+00C2 ISOlat1 -->
    <!ENTITY Atilde "&#195;"> <!-- latin capital letter A with tilde,
                                      U+00C3 ISOlat1 -->
    <!ENTITY Auml   "&#196;"> <!-- latin capital letter A with diaeresis,
                                      U+00C4 ISOlat1 -->
    <!ENTITY Aring  "&#197;"> <!-- latin capital letter A with ring above
                                      = latin capital letter A ring,
                                      U+00C5 ISOlat1 -->
    <!ENTITY AElig  "&#198;"> <!-- latin capital letter AE
                                      = latin capital ligature AE,
                                      U+00C6 ISOlat1 -->
    <!ENTITY Ccedil "&#199;"> <!-- latin capital letter C with cedilla,
                                      U+00C7 ISOlat1 -->
    <!ENTITY Egrave "&#200;"> <!-- latin capital letter E with grave,
                                      U+00C8 ISOlat1 -->
    <!ENTITY Eacute "&#201;"> <!-- latin capital letter E with acute,
                                      U+00C9 ISOlat1 -->
    <!ENTITY Ecirc  "&#202;"> <!-- latin capital letter E with circumflex,
                                      U+00CA ISOlat1 -->
    <!ENTITY Euml   "&#203;"> <!-- latin capital letter E with diaeresis,
                                      U+00CB ISOlat1 -->
    <!ENTITY Igrave "&#204;"> <!-- latin capital letter I with grave,
                                      U+00CC ISOlat1 -->
    <!ENTITY Iacute "&#205;"> <!-- latin capital letter I with acute,
                                      U+00CD ISOlat1 -->
    <!ENTITY Icirc  "&#206;"> <!-- latin capital letter I with circumflex,
                                      U+00CE ISOlat1 -->
    <!ENTITY Iuml   "&#207;"> <!-- latin capital letter I with diaeresis,
                                      U+00CF ISOlat1 -->
    <!ENTITY ETH    "&#208;"> <!-- latin capital letter ETH, U+00D0 ISOlat1 -->
    <!ENTITY Ntilde "&#209;"> <!-- latin capital letter N with tilde,
                                      U+00D1 ISOlat1 -->
    <!ENTITY Ograve "&#210;"> <!-- latin capital letter O with grave,
                                      U+00D2 ISOlat1 -->
    <!ENTITY Oacute "&#211;"> <!-- latin capital letter O with acute,
                                      U+00D3 ISOlat1 -->
    <!ENTITY Ocirc  "&#212;"> <!-- latin capital letter O with circumflex,
                                      U+00D4 ISOlat1 -->
    <!ENTITY Otilde "&#213;"> <!-- latin capital letter O with tilde,
                                      U+00D5 ISOlat1 -->
    <!ENTITY Ouml   "&#214;"> <!-- latin capital letter O with diaeresis,
                                      U+00D6 ISOlat1 -->
    <!ENTITY times  "&#215;"> <!-- multiplication sign, U+00D7 ISOnum -->
    <!ENTITY Oslash "&#216;"> <!-- latin capital letter O with stroke
                                      = latin capital letter O slash,
                                      U+00D8 ISOlat1 -->
    <!ENTITY Ugrave "&#217;"> <!-- latin capital letter U with grave,
                                      U+00D9 ISOlat1 -->
    <!ENTITY Uacute "&#218;"> <!-- latin capital letter U with acute,
                                      U+00DA ISOlat1 -->
    <!ENTITY Ucirc  "&#219;"> <!-- latin capital letter U with circumflex,
                                      U+00DB ISOlat1 -->
    <!ENTITY Uuml   "&#220;"> <!-- latin capital letter U with diaeresis,
                                      U+00DC ISOlat1 -->
    <!ENTITY Yacute "&#221;"> <!-- latin capital letter Y with acute,
                                      U+00DD ISOlat1 -->
    <!ENTITY THORN  "&#222;"> <!-- latin capital letter THORN,
                                      U+00DE ISOlat1 -->
    <!ENTITY szlig  "&#223;"> <!-- latin small letter sharp s = ess-zed,
                                      U+00DF ISOlat1 -->
    <!ENTITY agrave "&#224;"> <!-- latin small letter a with grave
                                      = latin small letter a grave,
                                      U+00E0 ISOlat1 -->
    <!ENTITY aacute "&#225;"> <!-- latin small letter a with acute,
                                      U+00E1 ISOlat1 -->
    <!ENTITY acirc  "&#226;"> <!-- latin small letter a with circumflex,
                                      U+00E2 ISOlat1 -->
    <!ENTITY atilde "&#227;"> <!-- latin small letter a with tilde,
                                      U+00E3 ISOlat1 -->
    <!ENTITY auml   "&#228;"> <!-- latin small letter a with diaeresis,
                                      U+00E4 ISOlat1 -->
    <!ENTITY aring  "&#229;"> <!-- latin small letter a with ring above
                                      = latin small letter a ring,
                                      U+00E5 ISOlat1 -->
    <!ENTITY aelig  "&#230;"> <!-- latin small letter ae
                                      = latin small ligature ae, U+00E6 ISOlat1 -->
    <!ENTITY ccedil "&#231;"> <!-- latin small letter c with cedilla,
                                      U+00E7 ISOlat1 -->
    <!ENTITY egrave "&#232;"> <!-- latin small letter e with grave,
                                      U+00E8 ISOlat1 -->
    <!ENTITY eacute "&#233;"> <!-- latin small letter e with acute,
                                      U+00E9 ISOlat1 -->
    <!ENTITY ecirc  "&#234;"> <!-- latin small letter e with circumflex,
                                      U+00EA ISOlat1 -->
    <!ENTITY euml   "&#235;"> <!-- latin small letter e with diaeresis,
                                      U+00EB ISOlat1 -->
    <!ENTITY igrave "&#236;"> <!-- latin small letter i with grave,
                                      U+00EC ISOlat1 -->
    <!ENTITY iacute "&#237;"> <!-- latin small letter i with acute,
                                      U+00ED ISOlat1 -->
    <!ENTITY icirc  "&#238;"> <!-- latin small letter i with circumflex,
                                      U+00EE ISOlat1 -->
    <!ENTITY iuml   "&#239;"> <!-- latin small letter i with diaeresis,
                                      U+00EF ISOlat1 -->
    <!ENTITY eth    "&#240;"> <!-- latin small letter eth, U+00F0 ISOlat1 -->
    <!ENTITY ntilde "&#241;"> <!-- latin small letter n with tilde,
                                      U+00F1 ISOlat1 -->
    <!ENTITY ograve "&#242;"> <!-- latin small letter o with grave,
                                      U+00F2 ISOlat1 -->
    <!ENTITY oacute "&#243;"> <!-- latin small letter o with acute,
                                      U+00F3 ISOlat1 -->
    <!ENTITY ocirc  "&#244;"> <!-- latin small letter o with circumflex,
                                      U+00F4 ISOlat1 -->
    <!ENTITY otilde "&#245;"> <!-- latin small letter o with tilde,
                                      U+00F5 ISOlat1 -->
    <!ENTITY ouml   "&#246;"> <!-- latin small letter o with diaeresis,
                                      U+00F6 ISOlat1 -->
    <!ENTITY divide "&#247;"> <!-- division sign, U+00F7 ISOnum -->
    <!ENTITY oslash "&#248;"> <!-- latin small letter o with stroke,
                                      = latin small letter o slash,
                                      U+00F8 ISOlat1 -->
    <!ENTITY ugrave "&#249;"> <!-- latin small letter u with grave,
                                      U+00F9 ISOlat1 -->
    <!ENTITY uacute "&#250;"> <!-- latin small letter u with acute,
                                      U+00FA ISOlat1 -->
    <!ENTITY ucirc  "&#251;"> <!-- latin small letter u with circumflex,
                                      U+00FB ISOlat1 -->
    <!ENTITY uuml   "&#252;"> <!-- latin small letter u with diaeresis,
                                      U+00FC ISOlat1 -->
    <!ENTITY yacute "&#253;"> <!-- latin small letter y with acute,
                                      U+00FD ISOlat1 -->
    <!ENTITY thorn  "&#254;"> <!-- latin small letter thorn,
                                      U+00FE ISOlat1 -->
    <!ENTITY yuml   "&#255;"> <!-- latin small letter y with diaeresis,
                                      U+00FF ISOlat1 -->

### A.2.2. Special characters

The file DTD/xhtml-special.ent is a normative part of this specification. Its annotated contents are included here for completeness.

    <!-- Special characters for XHTML -->

    <!-- Character entity set. Typical invocation:
         <!ENTITY % HTMLspecial PUBLIC
            "-//W3C//ENTITIES Special for XHTML//EN"
            "http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent">
         %HTMLspecial;
    -->

    <!-- Portions (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.
    -->

    <!-- Relevant ISO entity set is given unless names are newly introduced.
         New names (i.e., not in ISO 8879 list) do not clash with any
         existing ISO 8879 entity names. ISO 10646 character numbers
         are given for each character, in hex. values are decimal
         conversions of the ISO 10646 values and refer to the document
         character set. Names are Unicode names.
    -->

    <!-- C0 Controls and Basic Latin -->
    <!ENTITY quot    "&#34;"> <!--  quotation mark, U+0022 ISOnum -->
    <!ENTITY amp     "&#38;#38;"> <!--  ampersand, U+0026 ISOnum -->
    <!ENTITY lt      "&#38;#60;"> <!--  less-than sign, U+003C ISOnum -->
    <!ENTITY gt      "&#62;"> <!--  greater-than sign, U+003E ISOnum -->
    <!ENTITY apos     "&#39;"> <!--  apostrophe = APL quote, U+0027 ISOnum -->

    <!-- Latin Extended-A -->
    <!ENTITY OElig   "&#338;"> <!--  latin capital ligature OE,
                                        U+0152 ISOlat2 -->
    <!ENTITY oelig   "&#339;"> <!--  latin small ligature oe, U+0153 ISOlat2 -->
    <!-- ligature is a misnomer, this is a separate character in some languages -->
    <!ENTITY Scaron  "&#352;"> <!--  latin capital letter S with caron,
                                        U+0160 ISOlat2 -->
    <!ENTITY scaron  "&#353;"> <!--  latin small letter s with caron,
                                        U+0161 ISOlat2 -->
    <!ENTITY Yuml    "&#376;"> <!--  latin capital letter Y with diaeresis,
                                        U+0178 ISOlat2 -->

    <!-- Spacing Modifier Letters -->
    <!ENTITY circ    "&#710;"> <!--  modifier letter circumflex accent,
                                        U+02C6 ISOpub -->
    <!ENTITY tilde   "&#732;"> <!--  small tilde, U+02DC ISOdia -->

    <!-- General Punctuation -->
    <!ENTITY ensp    "&#8194;"> <!-- en space, U+2002 ISOpub -->
    <!ENTITY emsp    "&#8195;"> <!-- em space, U+2003 ISOpub -->
    <!ENTITY thinsp  "&#8201;"> <!-- thin space, U+2009 ISOpub -->
    <!ENTITY zwnj    "&#8204;"> <!-- zero width non-joiner,
                                        U+200C NEW RFC 2070 -->
    <!ENTITY zwj     "&#8205;"> <!-- zero width joiner, U+200D NEW RFC 2070 -->
    <!ENTITY lrm     "&#8206;"> <!-- left-to-right mark, U+200E NEW RFC 2070 -->
    <!ENTITY rlm     "&#8207;"> <!-- right-to-left mark, U+200F NEW RFC 2070 -->
    <!ENTITY ndash   "&#8211;"> <!-- en dash, U+2013 ISOpub -->
    <!ENTITY mdash   "&#8212;"> <!-- em dash, U+2014 ISOpub -->
    <!ENTITY lsquo   "&#8216;"> <!-- left single quotation mark,
                                        U+2018 ISOnum -->
    <!ENTITY rsquo   "&#8217;"> <!-- right single quotation mark,
                                        U+2019 ISOnum -->
    <!ENTITY sbquo   "&#8218;"> <!-- single low-9 quotation mark, U+201A NEW -->
    <!ENTITY ldquo   "&#8220;"> <!-- left double quotation mark,
                                        U+201C ISOnum -->
    <!ENTITY rdquo   "&#8221;"> <!-- right double quotation mark,
                                        U+201D ISOnum -->
    <!ENTITY bdquo   "&#8222;"> <!-- double low-9 quotation mark, U+201E NEW -->
    <!ENTITY dagger  "&#8224;"> <!-- dagger, U+2020 ISOpub -->
    <!ENTITY Dagger  "&#8225;"> <!-- double dagger, U+2021 ISOpub -->
    <!ENTITY permil  "&#8240;"> <!-- per mille sign, U+2030 ISOtech -->
    <!ENTITY lsaquo  "&#8249;"> <!-- single left-pointing angle quotation mark,
                                        U+2039 ISO proposed -->
    <!-- lsaquo is proposed but not yet ISO standardized -->
    <!ENTITY rsaquo  "&#8250;"> <!-- single right-pointing angle quotation mark,
                                        U+203A ISO proposed -->
    <!-- rsaquo is proposed but not yet ISO standardized -->

    <!-- Currency Symbols -->
    <!ENTITY euro   "&#8364;"> <!--  euro sign, U+20AC NEW -->

### A.2.3. Symbols

The file DTD/xhtml-symbol.ent is a normative part of this specification. Its annotated contents are included here for completeness.

    <!-- Mathematical, Greek and Symbolic characters for XHTML -->

    <!-- Character entity set. Typical invocation:
         <!ENTITY % HTMLsymbol PUBLIC
            "-//W3C//ENTITIES Symbols for XHTML//EN"
            "http://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent">
         %HTMLsymbol;
    -->

    <!-- Portions (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.
    -->

    <!-- Relevant ISO entity set is given unless names are newly introduced.
         New names (i.e., not in ISO 8879 list) do not clash with any
         existing ISO 8879 entity names. ISO 10646 character numbers
         are given for each character, in hex. values are decimal
         conversions of the ISO 10646 values and refer to the document
         character set. Names are Unicode names.
    -->

    <!-- Latin Extended-B -->
    <!ENTITY fnof     "&#402;"> <!-- latin small letter f with hook = function
                                        = florin, U+0192 ISOtech -->

    <!-- Greek -->
    <!ENTITY Alpha    "&#913;"> <!-- greek capital letter alpha, U+0391 -->
    <!ENTITY Beta     "&#914;"> <!-- greek capital letter beta, U+0392 -->
    <!ENTITY Gamma    "&#915;"> <!-- greek capital letter gamma,
                                        U+0393 ISOgrk3 -->
    <!ENTITY Delta    "&#916;"> <!-- greek capital letter delta,
                                        U+0394 ISOgrk3 -->
    <!ENTITY Epsilon  "&#917;"> <!-- greek capital letter epsilon, U+0395 -->
    <!ENTITY Zeta     "&#918;"> <!-- greek capital letter zeta, U+0396 -->
    <!ENTITY Eta      "&#919;"> <!-- greek capital letter eta, U+0397 -->
    <!ENTITY Theta    "&#920;"> <!-- greek capital letter theta,
                                        U+0398 ISOgrk3 -->
    <!ENTITY Iota     "&#921;"> <!-- greek capital letter iota, U+0399 -->
    <!ENTITY Kappa    "&#922;"> <!-- greek capital letter kappa, U+039A -->
    <!ENTITY Lambda   "&#923;"> <!-- greek capital letter lamda,
                                        U+039B ISOgrk3 -->
    <!ENTITY Mu       "&#924;"> <!-- greek capital letter mu, U+039C -->
    <!ENTITY Nu       "&#925;"> <!-- greek capital letter nu, U+039D -->
    <!ENTITY Xi       "&#926;"> <!-- greek capital letter xi, U+039E ISOgrk3 -->
    <!ENTITY Omicron  "&#927;"> <!-- greek capital letter omicron, U+039F -->
    <!ENTITY Pi       "&#928;"> <!-- greek capital letter pi, U+03A0 ISOgrk3 -->
    <!ENTITY Rho      "&#929;"> <!-- greek capital letter rho, U+03A1 -->
    <!-- there is no Sigmaf, and no U+03A2 character either -->
    <!ENTITY Sigma    "&#931;"> <!-- greek capital letter sigma,
                                        U+03A3 ISOgrk3 -->
    <!ENTITY Tau      "&#932;"> <!-- greek capital letter tau, U+03A4 -->
    <!ENTITY Upsilon  "&#933;"> <!-- greek capital letter upsilon,
                                        U+03A5 ISOgrk3 -->
    <!ENTITY Phi      "&#934;"> <!-- greek capital letter phi,
                                        U+03A6 ISOgrk3 -->
    <!ENTITY Chi      "&#935;"> <!-- greek capital letter chi, U+03A7 -->
    <!ENTITY Psi      "&#936;"> <!-- greek capital letter psi,
                                        U+03A8 ISOgrk3 -->
    <!ENTITY Omega    "&#937;"> <!-- greek capital letter omega,
                                        U+03A9 ISOgrk3 -->

    <!ENTITY alpha    "&#945;"> <!-- greek small letter alpha,
                                        U+03B1 ISOgrk3 -->
    <!ENTITY beta     "&#946;"> <!-- greek small letter beta, U+03B2 ISOgrk3 -->
    <!ENTITY gamma    "&#947;"> <!-- greek small letter gamma,
                                        U+03B3 ISOgrk3 -->
    <!ENTITY delta    "&#948;"> <!-- greek small letter delta,
                                        U+03B4 ISOgrk3 -->
    <!ENTITY epsilon  "&#949;"> <!-- greek small letter epsilon,
                                        U+03B5 ISOgrk3 -->
    <!ENTITY zeta     "&#950;"> <!-- greek small letter zeta, U+03B6 ISOgrk3 -->
    <!ENTITY eta      "&#951;"> <!-- greek small letter eta, U+03B7 ISOgrk3 -->
    <!ENTITY theta    "&#952;"> <!-- greek small letter theta,
                                        U+03B8 ISOgrk3 -->
    <!ENTITY iota     "&#953;"> <!-- greek small letter iota, U+03B9 ISOgrk3 -->
    <!ENTITY kappa    "&#954;"> <!-- greek small letter kappa,
                                        U+03BA ISOgrk3 -->
    <!ENTITY lambda   "&#955;"> <!-- greek small letter lamda,
                                        U+03BB ISOgrk3 -->
    <!ENTITY mu       "&#956;"> <!-- greek small letter mu, U+03BC ISOgrk3 -->
    <!ENTITY nu       "&#957;"> <!-- greek small letter nu, U+03BD ISOgrk3 -->
    <!ENTITY xi       "&#958;"> <!-- greek small letter xi, U+03BE ISOgrk3 -->
    <!ENTITY omicron  "&#959;"> <!-- greek small letter omicron, U+03BF NEW -->
    <!ENTITY pi       "&#960;"> <!-- greek small letter pi, U+03C0 ISOgrk3 -->
    <!ENTITY rho      "&#961;"> <!-- greek small letter rho, U+03C1 ISOgrk3 -->
    <!ENTITY sigmaf   "&#962;"> <!-- greek small letter final sigma,
                                        U+03C2 ISOgrk3 -->
    <!ENTITY sigma    "&#963;"> <!-- greek small letter sigma,
                                        U+03C3 ISOgrk3 -->
    <!ENTITY tau      "&#964;"> <!-- greek small letter tau, U+03C4 ISOgrk3 -->
    <!ENTITY upsilon  "&#965;"> <!-- greek small letter upsilon,
                                        U+03C5 ISOgrk3 -->
    <!ENTITY phi      "&#966;"> <!-- greek small letter phi, U+03C6 ISOgrk3 -->
    <!ENTITY chi      "&#967;"> <!-- greek small letter chi, U+03C7 ISOgrk3 -->
    <!ENTITY psi      "&#968;"> <!-- greek small letter psi, U+03C8 ISOgrk3 -->
    <!ENTITY omega    "&#969;"> <!-- greek small letter omega,
                                        U+03C9 ISOgrk3 -->
    <!ENTITY thetasym "&#977;"> <!-- greek theta symbol,
                                        U+03D1 NEW -->
    <!ENTITY upsih    "&#978;"> <!-- greek upsilon with hook symbol,
                                        U+03D2 NEW -->
    <!ENTITY piv      "&#982;"> <!-- greek pi symbol, U+03D6 ISOgrk3 -->

    <!-- General Punctuation -->
    <!ENTITY bull     "&#8226;"> <!-- bullet = black small circle,
                                         U+2022 ISOpub  -->
    <!-- bullet is NOT the same as bullet operator, U+2219 -->
    <!ENTITY hellip   "&#8230;"> <!-- horizontal ellipsis = three dot leader,
                                         U+2026 ISOpub  -->
    <!ENTITY prime    "&#8242;"> <!-- prime = minutes = feet, U+2032 ISOtech -->
    <!ENTITY Prime    "&#8243;"> <!-- double prime = seconds = inches,
                                         U+2033 ISOtech -->
    <!ENTITY oline    "&#8254;"> <!-- overline = spacing overscore,
                                         U+203E NEW -->
    <!ENTITY frasl    "&#8260;"> <!-- fraction slash, U+2044 NEW -->

    <!-- Letterlike Symbols -->
    <!ENTITY weierp   "&#8472;"> <!-- script capital P = power set
                                         = Weierstrass p, U+2118 ISOamso -->
    <!ENTITY image    "&#8465;"> <!-- black-letter capital I = imaginary part,
                                         U+2111 ISOamso -->
    <!ENTITY real     "&#8476;"> <!-- black-letter capital R = real part symbol,
                                         U+211C ISOamso -->
    <!ENTITY trade    "&#8482;"> <!-- trade mark sign, U+2122 ISOnum -->
    <!ENTITY alefsym  "&#8501;"> <!-- alef symbol = first transfinite cardinal,
                                         U+2135 NEW -->
    <!-- alef symbol is NOT the same as hebrew letter alef,
         U+05D0 although the same glyph could be used to depict both characters -->

    <!-- Arrows -->
    <!ENTITY larr     "&#8592;"> <!-- leftwards arrow, U+2190 ISOnum -->
    <!ENTITY uarr     "&#8593;"> <!-- upwards arrow, U+2191 ISOnum-->
    <!ENTITY rarr     "&#8594;"> <!-- rightwards arrow, U+2192 ISOnum -->
    <!ENTITY darr     "&#8595;"> <!-- downwards arrow, U+2193 ISOnum -->
    <!ENTITY harr     "&#8596;"> <!-- left right arrow, U+2194 ISOamsa -->
    <!ENTITY crarr    "&#8629;"> <!-- downwards arrow with corner leftwards
                                         = carriage return, U+21B5 NEW -->
    <!ENTITY lArr     "&#8656;"> <!-- leftwards double arrow, U+21D0 ISOtech -->
    <!-- Unicode does not say that lArr is the same as the 'is implied by' arrow
        but also does not have any other character for that function. So lArr can
        be used for 'is implied by' as ISOtech suggests -->
    <!ENTITY uArr     "&#8657;"> <!-- upwards double arrow, U+21D1 ISOamsa -->
    <!ENTITY rArr     "&#8658;"> <!-- rightwards double arrow,
                                         U+21D2 ISOtech -->
    <!-- Unicode does not say this is the 'implies' character but does not have
         another character with this function so rArr can be used for 'implies'
         as ISOtech suggests -->
    <!ENTITY dArr     "&#8659;"> <!-- downwards double arrow, U+21D3 ISOamsa -->
    <!ENTITY hArr     "&#8660;"> <!-- left right double arrow,
                                         U+21D4 ISOamsa -->

    <!-- Mathematical Operators -->
    <!ENTITY forall   "&#8704;"> <!-- for all, U+2200 ISOtech -->
    <!ENTITY part     "&#8706;"> <!-- partial differential, U+2202 ISOtech  -->
    <!ENTITY exist    "&#8707;"> <!-- there exists, U+2203 ISOtech -->
    <!ENTITY empty    "&#8709;"> <!-- empty set = null set, U+2205 ISOamso -->
    <!ENTITY nabla    "&#8711;"> <!-- nabla = backward difference,
                                         U+2207 ISOtech -->
    <!ENTITY isin     "&#8712;"> <!-- element of, U+2208 ISOtech -->
    <!ENTITY notin    "&#8713;"> <!-- not an element of, U+2209 ISOtech -->
    <!ENTITY ni       "&#8715;"> <!-- contains as member, U+220B ISOtech -->
    <!ENTITY prod     "&#8719;"> <!-- n-ary product = product sign,
                                         U+220F ISOamsb -->
    <!-- prod is NOT the same character as U+03A0 'greek capital letter pi' though
         the same glyph might be used for both -->
    <!ENTITY sum      "&#8721;"> <!-- n-ary summation, U+2211 ISOamsb -->
    <!-- sum is NOT the same character as U+03A3 'greek capital letter sigma'
         though the same glyph might be used for both -->
    <!ENTITY minus    "&#8722;"> <!-- minus sign, U+2212 ISOtech -->
    <!ENTITY lowast   "&#8727;"> <!-- asterisk operator, U+2217 ISOtech -->
    <!ENTITY radic    "&#8730;"> <!-- square root = radical sign,
                                         U+221A ISOtech -->
    <!ENTITY prop     "&#8733;"> <!-- proportional to, U+221D ISOtech -->
    <!ENTITY infin    "&#8734;"> <!-- infinity, U+221E ISOtech -->
    <!ENTITY ang      "&#8736;"> <!-- angle, U+2220 ISOamso -->
    <!ENTITY and      "&#8743;"> <!-- logical and = wedge, U+2227 ISOtech -->
    <!ENTITY or       "&#8744;"> <!-- logical or = vee, U+2228 ISOtech -->
    <!ENTITY cap      "&#8745;"> <!-- intersection = cap, U+2229 ISOtech -->
    <!ENTITY cup      "&#8746;"> <!-- union = cup, U+222A ISOtech -->
    <!ENTITY int      "&#8747;"> <!-- integral, U+222B ISOtech -->
    <!ENTITY there4   "&#8756;"> <!-- therefore, U+2234 ISOtech -->
    <!ENTITY sim      "&#8764;"> <!-- tilde operator = varies with = similar to,
                                         U+223C ISOtech -->
    <!-- tilde operator is NOT the same character as the tilde, U+007E,
         although the same glyph might be used to represent both  -->
    <!ENTITY cong     "&#8773;"> <!-- approximately equal to, U+2245 ISOtech -->
    <!ENTITY asymp    "&#8776;"> <!-- almost equal to = asymptotic to,
                                         U+2248 ISOamsr -->
    <!ENTITY ne       "&#8800;"> <!-- not equal to, U+2260 ISOtech -->
    <!ENTITY equiv    "&#8801;"> <!-- identical to, U+2261 ISOtech -->
    <!ENTITY le       "&#8804;"> <!-- less-than or equal to, U+2264 ISOtech -->
    <!ENTITY ge       "&#8805;"> <!-- greater-than or equal to,
                                         U+2265 ISOtech -->
    <!ENTITY sub      "&#8834;"> <!-- subset of, U+2282 ISOtech -->
    <!ENTITY sup      "&#8835;"> <!-- superset of, U+2283 ISOtech -->
    <!ENTITY nsub     "&#8836;"> <!-- not a subset of, U+2284 ISOamsn -->
    <!ENTITY sube     "&#8838;"> <!-- subset of or equal to, U+2286 ISOtech -->
    <!ENTITY supe     "&#8839;"> <!-- superset of or equal to,
                                         U+2287 ISOtech -->
    <!ENTITY oplus    "&#8853;"> <!-- circled plus = direct sum,
                                         U+2295 ISOamsb -->
    <!ENTITY otimes   "&#8855;"> <!-- circled times = vector product,
                                         U+2297 ISOamsb -->
    <!ENTITY perp     "&#8869;"> <!-- up tack = orthogonal to = perpendicular,
                                         U+22A5 ISOtech -->
    <!ENTITY sdot     "&#8901;"> <!-- dot operator, U+22C5 ISOamsb -->
    <!-- dot operator is NOT the same character as U+00B7 middle dot -->

    <!-- Miscellaneous Technical -->
    <!ENTITY lceil    "&#8968;"> <!-- left ceiling = APL upstile,
                                         U+2308 ISOamsc  -->
    <!ENTITY rceil    "&#8969;"> <!-- right ceiling, U+2309 ISOamsc  -->
    <!ENTITY lfloor   "&#8970;"> <!-- left floor = APL downstile,
                                         U+230A ISOamsc  -->
    <!ENTITY rfloor   "&#8971;"> <!-- right floor, U+230B ISOamsc  -->
    <!ENTITY lang     "&#9001;"> <!-- left-pointing angle bracket = bra,
                                         U+2329 ISOtech -->
    <!-- lang is NOT the same character as U+003C 'less than sign'
         or U+2039 'single left-pointing angle quotation mark' -->
    <!ENTITY rang     "&#9002;"> <!-- right-pointing angle bracket = ket,
                                         U+232A ISOtech -->
    <!-- rang is NOT the same character as U+003E 'greater than sign'
         or U+203A 'single right-pointing angle quotation mark' -->

    <!-- Geometric Shapes -->
    <!ENTITY loz      "&#9674;"> <!-- lozenge, U+25CA ISOpub -->

    <!-- Miscellaneous Symbols -->
    <!ENTITY spades   "&#9824;"> <!-- black spade suit, U+2660 ISOpub -->
    <!-- black here seems to mean filled as opposed to hollow -->
    <!ENTITY clubs    "&#9827;"> <!-- black club suit = shamrock,
                                         U+2663 ISOpub -->
    <!ENTITY hearts   "&#9829;"> <!-- black heart suit = valentine,
                                         U+2665 ISOpub -->
    <!ENTITY diams    "&#9830;"> <!-- black diamond suit, U+2666 ISOpub -->