<!-- Extensible HTML version 1.0 Strict DTD This is the same as HTML 4.0 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) 1998-1999 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" --> <!--================ Character mnemonic entities =========================--> <!ENTITY % HTMLlat1 PUBLIC "-//W3C//ENTITIES Latin 1 for XHTML//EN" "xhtml-lat1.ent"> %HTMLlat1; <!ENTITY % HTMLsymbol PUBLIC "-//W3C//ENTITIES Symbols for XHTML//EN" "xhtml-symbol.ent"> %HTMLsymbol; <!ENTITY % HTMLspecial PUBLIC "-//W3C//ENTITIES Special for XHTML//EN" "xhtml-special.ent"> %HTMLspecial; <!--================== Imported Names ====================================--> <!ENTITY % ContentType "CDATA"> <!-- media type, as per [RFC2045] --> <!ENTITY % ContentTypes "CDATA"> <!-- comma-separated list of media types, as per [RFC2045] --> <!ENTITY % Charset "CDATA"> <!-- a character encoding, as per [RFC2045] --> <!ENTITY % Charsets "CDATA"> <!-- a space separated list of character encodings, as per [RFC2045] --> <!ENTITY % LanguageCode "NMTOKEN"> <!-- a language code, as per [RFC1766] --> <!ENTITY % Character "CDATA"> <!-- a single character from [ISO10646] --> <!ENTITY % Number "CDATA"> <!-- one or more digits --> <!ENTITY % LinkTypes "CDATA"> <!-- space-separated list of link types --> <!ENTITY % MediaDesc "CDATA"> <!-- single or comma-separated list of media descriptors --> <!ENTITY % URI "CDATA"> <!-- a Uniform Resource Identifier, see [RFC2396] --> <!ENTITY % UriList "CDATA"> <!-- a space separated list of Uniform Resource Identifiers --> <!ENTITY % Datetime "CDATA"> <!-- date and time information. ISO date format --> <!ENTITY % Script "CDATA"> <!-- script expression --> <!ENTITY % StyleSheet "CDATA"> <!-- style sheet data --> <!ENTITY % Text "CDATA"> <!-- used for titles etc. --> <!ENTITY % FrameTarget "NMTOKEN"> <!-- render in this frame --> <!ENTITY % Length "CDATA"> <!-- nn for pixels or nn% for percentage length --> <!ENTITY % MultiLength "CDATA"> <!-- pixel, percentage, or relative --> <!ENTITY % MultiLengths "CDATA"> <!-- comma-separated list of MultiLength --> <!ENTITY % Pixels "CDATA"> <!-- integer representing length in pixels --> <!-- these are used for image maps --> <!ENTITY % Shape "(rect|circle|poly|default)"> <!ENTITY % Coords "CDATA"> <!-- comma separated list of lengths --> <!--=================== 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 "br | span | bdo | object | img | map"> <!ENTITY % fontstyle "tt | i | b | big | small"> <!ENTITY % phrase "em | strong | dfn | code | q | sub | sup | samp | kbd | var | cite | abbr | acronym"> <!ENTITY % inline.forms "input | select | textarea | label | button"> <!-- these can occur at block or inline level --> <!ENTITY % misc "ins | del | script | noscript"> <!ENTITY % inline "a | %special; | %fontstyle; | %phrase; | %inline.forms;"> <!-- %Inline; covers inline or "text-level" elements --> <!ENTITY % Inline "(#PCDATA | %inline; | %misc;)*"> <!--================== Block level elements ==============================--> <!ENTITY % heading "h1|h2|h3|h4|h5|h6"> <!ENTITY % lists "ul | ol | dl"> <!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;)*"> <!-- pre uses %Inline excluding img, object, big, small, sup or sup --> <!ENTITY % pre.content "(#PCDATA | a | br | span | bdo | map | tt | i | b | %phrase; | %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; 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; profile %URI; #IMPLIED > <!-- The title element is not considered part of the flow of text. It should be displayed, for example as the page header or window title. Exactly one title is required per document. --> <!ELEMENT title (#PCDATA)> <!ATTLIST title %i18n;> <!-- document base URI --> <!ELEMENT base EMPTY> <!ATTLIST base href %URI; #IMPLIED > <!-- generic metainformation --> <!ELEMENT meta EMPTY> <!ATTLIST meta %i18n; http-equiv CDATA #IMPLIED name CDATA #IMPLIED content CDATA #REQUIRED scheme CDATA #IMPLIED > <!-- Relationship values can be used in principle: a) for document specific toolbars/menus when used with the link element in document head e.g. start, contents, previous, next, index, end, help b) to link to a separate style sheet (rel="stylesheet") c) to make a link to a script (rel="script") d) by stylesheets to control how collections of html nodes are rendered into printed documents e) to make a link to a printable version of this document e.g. a PostScript or PDF version (rel="alternate" media="print") --> <!ELEMENT link EMPTY> <!ATTLIST link %attrs; charset %Charset; #IMPLIED href %URI; #IMPLIED hreflang %LanguageCode; #IMPLIED type %ContentType; #IMPLIED rel %LinkTypes; #IMPLIED rev %LinkTypes; #IMPLIED media %MediaDesc; #IMPLIED > <!-- style info, which may include CDATA sections --> <!ELEMENT style (#PCDATA)> <!ATTLIST style %i18n; type %ContentType; #REQUIRED media %MediaDesc; #IMPLIED title %Text; #IMPLIED xml:space (preserve) #FIXED 'preserve' > <!-- script statements, which may include CDATA sections --> <!ELEMENT script (#PCDATA)> <!ATTLIST script charset %Charset; #IMPLIED type %ContentType; #REQUIRED 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; charset %Charset; #IMPLIED type %ContentType; #IMPLIED name NMTOKEN #IMPLIED href %URI; #IMPLIED hreflang %LanguageCode; #IMPLIED rel %LinkTypes; #IMPLIED rev %LinkTypes; #IMPLIED accesskey %Character; #IMPLIED shape %Shape; "rect" coords %Coords; #IMPLIED tabindex %Number; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED > <!--===================== 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; shape %Shape; "rect" coords %Coords; #IMPLIED href %URI; #IMPLIED nohref (nohref) #IMPLIED alt %Text; #REQUIRED tabindex %Number; #IMPLIED accesskey %Character; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED > <!--================ 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; type %InputType; "text" name CDATA #IMPLIED value CDATA #IMPLIED checked (checked) #IMPLIED disabled (disabled) #IMPLIED readonly (readonly) #IMPLIED size CDATA #IMPLIED maxlength %Number; #IMPLIED src %URI; #IMPLIED alt CDATA #IMPLIED usemap %URI; #IMPLIED tabindex %Number; #IMPLIED accesskey %Character; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED onselect %Script; #IMPLIED onchange %Script; #IMPLIED accept %ContentTypes; #IMPLIED > <!ELEMENT select (optgroup|option)+> <!-- option selector --> <!ATTLIST select %attrs; name CDATA #IMPLIED size %Number; #IMPLIED multiple (multiple) #IMPLIED disabled (disabled) #IMPLIED tabindex %Number; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED onchange %Script; #IMPLIED > <!ELEMENT optgroup (option)+> <!-- option group --> <!ATTLIST optgroup %attrs; disabled (disabled) #IMPLIED label %Text; #REQUIRED > <!ELEMENT option (#PCDATA)> <!-- selectable choice --> <!ATTLIST option %attrs; selected (selected) #IMPLIED disabled (disabled) #IMPLIED label %Text; #IMPLIED value CDATA #IMPLIED > <!ELEMENT textarea (#PCDATA)> <!-- multi-line text field --> <!ATTLIST textarea %attrs; name CDATA #IMPLIED rows %Number; #REQUIRED cols %Number; #REQUIRED disabled (disabled) #IMPLIED readonly (readonly) #IMPLIED tabindex %Number; #IMPLIED accesskey %Character; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED onselect %Script; #IMPLIED onchange %Script; #IMPLIED > <!-- The fieldset element is used to group form fields. Only one legend element should occur in the content and if present should only be preceded by whitespace. --> <!ELEMENT fieldset (#PCDATA | legend | %block; | form | %inline; | %misc;)*> <!ATTLIST fieldset %attrs; > <!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; name CDATA #IMPLIED value CDATA #IMPLIED type (button|submit|reset) "submit" disabled (disabled) #IMPLIED tabindex %Number; #IMPLIED accesskey %Character; #IMPLIED onfocus %Script; #IMPLIED onblur %Script; #IMPLIED > <!--======================= 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 > <!ENTITY % CAlign "(top|bottom|left|right)"> <!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; >