📄 htmlplus.dtd
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<!SGML "ISO 8879:1986"-- Document Type Definition for the HyperText Markup Language Plus for use with the World Wide Web application (HTML+ DTD). This DTD is designed for use with SGML authoring tools and it is expected that most browsers will tolerate omissions, in particular, missing <DIVn> elements and <P> start tags following headers, which can easily be inferred from the context. The HTML+ DTD which is structured as an HTML core plus a number of additional modules which can be included by an entity definition in a document's <!DOCTYPE> element. You can include specific features in your document using the DOCTYPE declaration at the start, e.g. <!DOCTYPE htmlplus [ <!ENTITY % HTML.tables "INCLUDE"> <!ENTITY % HTML.forms "INCLUDE"> ]> This spec also allows for authors to extend the DTD and to define how any new elements are rendered in terms of existing ones. This should be used with caution. I would like to acknowledge the influence of the TEI DTDs which proved very helpful in restructuring the DTD. Dave Raggett <dsr@hplb.hpl.hp.com> 5th April 1994 Changes: Added align attribute to headers with same values and meaning as for paragraphs. Added prologue and epilogue elements and fixed bug in definition of %paras with HTML.emph. Added entity names for standard icons c/o Bert Bos. This are enabled with the HTML.icons switch. Added PRE to content model for LI and DD, and changed DL to require at least one DT per DD. Math is now part of %text; but can't be nested. Tried to permit an optional epilogue following last division, but sgmls gave: Content model is ambiguous Added support for graphical menus to SELECT/OPTION. Liberalised content model for headers to %text; Added optional NOFOLD attribute to P element to inhibit SGML folding of whitespace. Dropped the LIT element and changed the TAB element over to the LaTeX model. Added NOWRAP to P element. Replaced TH/TD's align=numeric with ALIGNON="." etc. Made anchor NAME attribute conditional on HTML.obsolete Added HTML.obsolete for obsoleted HTML elements Added SIG attribute to A and LINK for specifying a digital signature to attest that a linked document is unchanged. SRC attribute added to NOTE to allow authors to override the default icon chosen on the basis of the ROLE attribute. Switched REL/REV back to CDATA to avoid trouble with duplicate name or name token error. Using an explicit list of relationship types would force us to drop REV. Added top/bottom alignment attribute to CAPTION REL and REV domains now defined by parameter entities SRC attribute added to LINK to allow images to be used in document specific toolbar Baseline attribute added to FIG and IMG to give precise control of vertical position relative to baseline. Revised comments for <A> and <LINK> to remove references to obsoleted timing attributes and to add a list of "standard" relationship types. CHANGED element now uses more meaningful attribute names. STATE dropped in favor of INPUT with TYPE="hidden". Forms now support a link to a script for client-side execution of constraints. The element definition for DIV1..DIV6 and P no longer permit the start tag to be omitted. This was regrettably forced by a restriction in the SGML standard. Browsers *must* be capable of inferring them when missing,in order to cope with legacy documents. Fixed some errors in earlier version to do with start tags and definitions of parameter entities. The content model for FIG has been changed to use a P element for text to avoid an SGML parsing problem with a line break before the caption.--CHARSET BASESET "ISO 646:1983//CHARSET International Reference Version (IRV)//ESC 2/5 4/0" DESCSET 0 9 UNUSED 9 2 9 11 2 UNUSED 13 1 13 14 18 UNUSED 32 95 32 127 1 UNUSED BASESET "ISO Registration Number 100//CHARSET ECMA-94 Right Part of Latin Alphabet Nr. 1//ESC 2/13 4/1" DESCSET 128 32 UNUSED 160 95 32 255 1 UNUSEDCAPACITY SGMLREF TOTALCAP 150000 GRPCAP 150000SCOPE DOCUMENTSYNTAX SHUNCHAR CONTROLS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 127 255 BASESET "ISO 646:1983//CHARSET International Reference Version (IRV)//ESC 2/5 4/0" DESCSET 0 128 0 FUNCTION RE 13 RS 10 SPACE 32 TAB SEPCHAR 9 NAMING LCNMSTRT "" UCNMSTRT "" LCNMCHAR ".-" UCNMCHAR ".-" NAMECASE GENERAL YES ENTITY NO DELIM GENERAL SGMLREF SHORTREF SGMLREF NAMES SGMLREF QUANTITY SGMLREF NAMELEN 32 TAGLVL 100 LITLEN 1024 GRPGTCNT 150 GRPCNT 64FEATURES MINIMIZE DATATAG NO OMITTAG YES RANK NO SHORTTAG NO LINK SIMPLE NO IMPLICIT NO EXPLICIT NO OTHER CONCUR NO SUBDOC NO FORMAL YES APPINFO NONE><!DOCTYPE HTMLPLUS [<!-- DTD for HTML+ Markup minimisation should be avoided, otherwise the default <!SGML>declaration is fine. Browsers should be forgiving of markup errors,while authoring tools *should* enforce compliance with the DTD.Common Attributes:id This attribute allows authors to name elements such as headers and paragraphs as potential destinations for links. Note that links don't specify points, but rather extended objects.charset This allows authors to switch to a different char set for quotations or list etc. This is particularly useful for oriental languages which need two byte character codes, e.g. see RFC 1468 "Japanese Character Encoding for Internet Messages"ENTITY DECLARATIONS <!ENTITY % foo "X | Y | Z"> is a macro definition for parameters and in subsequent statements, the string "%foo;" is expanded to "X | Y | Z" Various classes of SGML text types: CDATA text which doesn't include markup or entity references RCDATA text with entity references but no markup PCDATA text occurring in a context in which markup and entity references may occur.--><!-- Core HTML+ DTD omits following features --><!ENTITY % HTML.math "IGNORE"><!ENTITY % HTML.tables "IGNORE"><!ENTITY % HTML.figures "IGNORE"><!ENTITY % HTML.emph "IGNORE"><!ENTITY % HTML.forms "IGNORE"><!ENTITY % HTML.obsolete "IGNORE"><!ENTITY % HTML.icons "IGNORE"><!ENTITY % cextra "" -- for character-like elements --><!ENTITY % pextra "" -- for paragraph-like elements --><!-- %cextra; and %pextra are designed to allow document specific extensions to the HTML+ DTD, e.g. <!DOCTYPE htmlplus [ <!ENTITY % cextra "|PROPNAME"> <!ELEMENT PROPNAME - - CDATA> ]> Use the RENDER element to specify how the browser should display new elements in terms of existing ones, e.g. <RENDER tag="PROPNAME" style="I">--><!ENTITY % URL "CDATA" -- a URL or URN designating a hypertext node --><!-- Browsers should render the following types of emphasis distinctly when the obvious rendering is impractical I = italic, B = bold, U = underline, S = strikethru, TT = teletype font, SUP = superscript, SUB = subscript REV = reverse video for highlighting hit areas in the result of a query Q = inline quote (render according to local conventions)--><!ENTITY % emph1 "I|B|U|TT|CITE|EM|STRONG|KBD|VAR|DFN|CODE|SAMP"><!ENTITY % emph2 "S|Q|PERSON|ACRONYM|ABBREV|CMD|ARG|REMOVED|ADDED|REV"><!ENTITY % emph3 "SUP|SUB|CHANGED|TAB|HIDE"><![ %HTML.emph [ <!ENTITY % emph "%emph1;|%emph2;|%emph3;"> ]]><!ENTITY % emph "%emph1;"><![ %HTML.emph [ <!ENTITY % misc1 "|RENDER|FOOTNOTE|MARGIN"> ]]><!ENTITY % misc1 ""><![ %HTML.forms [ <!ENTITY % misc2 "|INPUT|TEXTAREA|SELECT"> ]]><!ENTITY % misc2 ""><!ENTITY % misc "BR %misc1 %misc2; %cextra;"><![ %HTML.math [ <!ENTITY % math "|MATH"> ]]><!ENTITY % math ""><![ %HTML.figures [ <!ENTITY % text "#PCDATA|A|IMG|FIG|%emph;|%misc;"> ]]><!ENTITY % text "#PCDATA|A|IMG|%emph;|%misc; %math;"><!ENTITY % paras "P|PRE %pextra;"><!ENTITY % lists "UL|OL|DL"><![ %HTML.emph [ <!ENTITY % block1 "NOTE|QUOTE|ABSTRACT|ADDRESS|HR"> ]]><!ENTITY % block1 "ADDRESS|HR"><![ %HTML.tables [ <!ENTITY % block2 "|TABLE"> ]]><!ENTITY % block2 ""><![ %HTML.forms [ <!ENTITY % block3 "|FORM"> ]]><!ENTITY % block3 ""><![ %HTML.obsolete [ <!ENTITY % block4 "|MENU|DIR|BLOCKQUOTE"> ]]><!ENTITY % block4 ""><!ENTITY % block "%block1; %block2; %block3; %block4;"><![ %HTML.emph [<!ENTITY % setup1 "& RENDER*"> ]]><!ENTITY % setup1 ""><!ENTITY % setup "(TITLE? & ISINDEX? & BASE? & META* & LINK* %setup1;)"><!ENTITY % main "%block;|%lists;|%paras;"><!ENTITY % divisions "DIV6*, DIV5*, DIV4*, DIV3*, DIV2*, DIV1*"><!-- these entities are used to simplify element definitions --><!ENTITY % heading "H1|H2|H3|H4|H5|H6"> <!ENTITY % table "P|%heading;|%lists;"><!ENTITY % formulae "BOX|ARRAY|ROOT|%text;"><![ %HTML.obsolete [<!ENTITY % anchorname "name NMTOKEN #IMPLIED"> ]]><!ENTITY % anchorname ""><![ %HTML.forms [ <!ENTITY % fields "text|password|checkbox|radio|submit|reset|int| float|date|url|hidden|range|scribble|audio">]]><!-- Core DTD includes basic Latin-1 entities --><!ENTITY % ISOlat1 PUBLIC "ISO 8879-1986//ENTITIES Added Latin 1//EN">%ISOlat1;<!-- additional entities normally found in Latin-1 char sets--><!ENTITY % ISOnum PUBLIC "ISO 8879-1986//ENTITIES Numeric and Special Graphic//EN">%ISOnum;<!-- diacritical marks normally found in Latin-1 char sets--><!ENTITY % ISOdia PUBLIC "ISO 8879-1986//ENTITIES Diacritical Marks//EN">%ISOdia;<!-- misc. from ISO Publishing entities --><!ENTITY ndash SDATA "[ndash ]"--=en dash--><!ENTITY mdash SDATA "[ndash ]"--=em dash--><!ENTITY ensp SDATA "[ensp ]"--=en space (1/2-em)--><!ENTITY emsp SDATA "[emsp ]"--=em space--><!ENTITY hellip SDATA "[hellip]"--=ellipsis (horizontal)--><!ENTITY vellip SDATA "[vellip]"--=ellipsis (vertical)--><!-- standard ISO/WWW icons courtesy of Bert Bos and Kevin Hughes, see gopher://gopher.let.rug.nl/00/ftp/pub/Bert/WWWicn.940218 These can be used in place of default symbols for list items or as part of hypertext links, and save time needed to download images. Browsers can define them in terms of library images or as URL/URNs.--><![ %HTML.icons [ <!ENTITY ftp SDATA "ftp" -- ftp server --> <!ENTITY gopher SDATA "gopher" -- gopher server --> <!ENTITY telnet SDATA "telnet" -- telnet connection --> <!ENTITY archive SDATA "archive" -- archive server --> <!ENTITY filing.cabinet SDATA "filing.cabinet" -- filing cabinet --> <!ENTITY folder SDATA "folder" -- folder or directory --> <!ENTITY fixed.disk SDATA "fixed.disk" -- fixed media drive --> <!ENTITY disk.drive SDATA "disk.drive" -- removeable media drive --> <!ENTITY document SDATA "document" -- unspecified document type --> <!ENTITY unknown.document SDATA "unknown.document" -- unrecognised document type --> <!ENTITY text.document SDATA "text.document" -- text/plain, text.html etc. --> <!ENTITY binary.document SDATA "binary.document" -- binary data --> <!ENTITY binhex.document SDATA "binhex.document" -- binhex format --> <!ENTITY audio SDATA "audio" -- audio sequence --> <!ENTITY film SDATA "film" -- film or animation, such as an MPEG movie --> <!ENTITY image SDATA "image" -- photograph, drawing or graphic of any kind --> <!ENTITY map SDATA "map" -- geographical or a schematic map --> <!ENTITY form SDATA "form" -- fill-out form --> <!ENTITY mail SDATA "mail" -- email messages -->⌨️ 快捷键说明
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