📄 strict.dtd
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<!-- This is HTML 4.01 Strict DTD, which excludes the presentation attributes and elements that W3C expects to phase out as support for style sheets matures. Authors should use the Strict DTD when possible, but may use the Transitional DTD when support for presentation attribute and elements is required. HTML 4 includes mechanisms for style sheets, scripting, embedding objects, improved support for right to left and mixed direction text, and enhancements to forms for improved accessibility for people with disabilities. Draft: $Date: 1999/12/24 22:40:35 $ Authors: Dave Raggett <dsr@w3.org> Arnaud Le Hors <lehors@w3.org> Ian Jacobs <ij@w3.org> Further information about HTML 4.01 is available at: http://www.w3.org/TR/1999/REC-html401-19991224 The HTML 4.01 specification includes additional syntactic constraints that cannot be expressed within the DTDs.--><!-- Typical usage: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> ... </head> <body> ... </body> </html> The URI used as a system identifier with the public identifier allows the user agent to download the DTD and entity sets as needed. The FPI for the Transitional HTML 4.01 DTD is: "-//W3C//DTD HTML 4.01 Transitional//EN" This version of the transitional DTD is: http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd If you are writing a document that includes frames, use the following FPI: "-//W3C//DTD HTML 4.01 Frameset//EN" This version of the frameset DTD is: http://www.w3.org/TR/1999/REC-html401-19991224/frameset.dtd Use the following (relative) URIs to refer to the DTDs and entity definitions of this specification: "strict.dtd" "loose.dtd" "frameset.dtd" "HTMLlat1.ent" "HTMLsymbol.ent" "HTMLspecial.ent"--><!--================== Imported Names ====================================--><!-- Feature Switch for frameset documents --><!ENTITY % HTML.Frameset "IGNORE"><!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 "NAME" -- a language code, as per [RFC1766] --><!ENTITY % Character "CDATA" -- a single character from [ISO10646] --><!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 [URI] --><!ENTITY % Datetime "CDATA" -- date and time information. ISO date format --><!ENTITY % Script "CDATA" -- script expression --><!ENTITY % StyleSheet "CDATA" -- style sheet data --><!ENTITY % Text "CDATA"><!-- Parameter Entities --><!ENTITY % head.misc "SCRIPT|STYLE|META|LINK|OBJECT" -- repeatable head elements --><!ENTITY % heading "H1|H2|H3|H4|H5|H6"><!ENTITY % list "UL | OL"><!ENTITY % preformatted "PRE"><!--================ Character mnemonic entities =========================--><!ENTITY % HTMLlat1 PUBLIC "-//W3C//ENTITIES Latin1//EN//HTML" "HTMLlat1.ent">%HTMLlat1;<!ENTITY % HTMLsymbol PUBLIC "-//W3C//ENTITIES Symbols//EN//HTML" "HTMLsymbol.ent">%HTMLsymbol;<!ENTITY % HTMLspecial PUBLIC "-//W3C//ENTITIES Special//EN//HTML" "HTMLspecial.ent">%HTMLspecial;<!--=================== Generic Attributes ===============================--><!ENTITY % coreattrs "id ID #IMPLIED -- document-wide unique id -- class CDATA #IMPLIED -- space-separated list of classes -- style %StyleSheet; #IMPLIED -- associated style info -- title %Text; #IMPLIED -- advisory title --" ><!ENTITY % i18n "lang %LanguageCode; #IMPLIED -- language code -- dir (ltr|rtl) #IMPLIED -- direction for weak/neutral text --" ><!ENTITY % events "onclick %Script; #IMPLIED -- a pointer button was clicked -- ondblclick %Script; #IMPLIED -- a pointer button was double clicked-- onmousedown %Script; #IMPLIED -- a pointer button was pressed down -- onmouseup %Script; #IMPLIED -- a pointer button was released -- onmouseover %Script; #IMPLIED -- a pointer was moved onto -- onmousemove %Script; #IMPLIED -- a pointer was moved within -- onmouseout %Script; #IMPLIED -- a pointer was moved away -- onkeypress %Script; #IMPLIED -- a key was pressed and released -- onkeydown %Script; #IMPLIED -- a key was pressed down -- onkeyup %Script; #IMPLIED -- a key was released --" ><!-- Reserved Feature Switch --><!ENTITY % HTML.Reserved "IGNORE"><!-- The following attributes are reserved for possible future use --><![ %HTML.Reserved; [<!ENTITY % reserved "datasrc %URI; #IMPLIED -- a single or tabular Data Source -- datafld CDATA #IMPLIED -- the property or column name -- dataformatas (plaintext|html) plaintext -- text or html --" >]]><!ENTITY % reserved ""><!ENTITY % attrs "%coreattrs; %i18n; %events;"><!--=================== Text Markup ======================================--><!ENTITY % fontstyle "TT | I | B | BIG | SMALL"><!ENTITY % phrase "EM | STRONG | DFN | CODE | SAMP | KBD | VAR | CITE | ABBR | ACRONYM" ><!ENTITY % special "A | IMG | OBJECT | BR | SCRIPT | MAP | Q | SUB | SUP | SPAN | BDO"><!ENTITY % formctrl "INPUT | SELECT | TEXTAREA | LABEL | BUTTON"><!-- %inline; covers inline or "text-level" elements --><!ENTITY % inline "#PCDATA | %fontstyle; | %phrase; | %special; | %formctrl;"><!ELEMENT (%fontstyle;|%phrase;) - - (%inline;)*><!ATTLIST (%fontstyle;|%phrase;) %attrs; -- %coreattrs, %i18n, %events -- ><!ELEMENT (SUB|SUP) - - (%inline;)* -- subscript, superscript --><!ATTLIST (SUB|SUP) %attrs; -- %coreattrs, %i18n, %events -- ><!ELEMENT SPAN - - (%inline;)* -- generic language/style container --><!ATTLIST SPAN %attrs; -- %coreattrs, %i18n, %events -- %reserved; -- reserved for possible future use -- ><!ELEMENT BDO - - (%inline;)* -- I18N BiDi over-ride --><!ATTLIST BDO %coreattrs; -- id, class, style, title -- lang %LanguageCode; #IMPLIED -- language code -- dir (ltr|rtl) #REQUIRED -- directionality -- ><!ELEMENT BR - O EMPTY -- forced line break --><!ATTLIST BR %coreattrs; -- id, class, style, title -- ><!--================== HTML content models ===============================--><!-- HTML has two basic content models: %inline; character level elements and text strings %block; block-like elements e.g. paragraphs and lists--><!ENTITY % block "P | %heading; | %list; | %preformatted; | DL | DIV | NOSCRIPT | BLOCKQUOTE | FORM | HR | TABLE | FIELDSET | ADDRESS"><!ENTITY % flow "%block; | %inline;"><!--=================== Document Body ====================================--><!ELEMENT BODY O O (%block;|SCRIPT)+ +(INS|DEL) -- document body --><!ATTLIST BODY %attrs; -- %coreattrs, %i18n, %events -- onload %Script; #IMPLIED -- the document has been loaded -- onunload %Script; #IMPLIED -- the document has been removed -- ><!ELEMENT ADDRESS - - (%inline;)* -- information on author --><!ATTLIST ADDRESS %attrs; -- %coreattrs, %i18n, %events -- ><!ELEMENT DIV - - (%flow;)* -- generic language/style container --><!ATTLIST DIV %attrs; -- %coreattrs, %i18n, %events -- %reserved; -- reserved for possible future use -- ><!--================== The Anchor Element ================================--><!ENTITY % Shape "(rect|circle|poly|default)"><!ENTITY % Coords "CDATA" -- comma-separated list of lengths --><!ELEMENT A - - (%inline;)* -(A) -- anchor --><!ATTLIST A %attrs; -- %coreattrs, %i18n, %events -- charset %Charset; #IMPLIED -- char encoding of linked resource -- type %ContentType; #IMPLIED -- advisory content type -- name CDATA #IMPLIED -- named link end --⌨️ 快捷键说明
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