/[pub]/test/html.dtd
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revision 1.7.2.4 by connolly, Thu Apr 7 00:33:25 1994 UTC revision 1.12 by connolly, Tue May 17 21:07:53 1994 UTC
# Line 3  Line 3 
3          Document Type Definition for the HyperText Markup Language          Document Type Definition for the HyperText Markup Language
4          as used by the World Wide Web application (HTML DTD).          as used by the World Wide Web application (HTML DTD).
5    
6          $Id$          $Id$
7    
8  -->  -->
9    
10    <!-- Feature Test Entities -->
11    
12    <!-- To use these, write your document like:
13            <!DOCTYPE HTML [
14            <!ENTITY % HTML.Optional "INCLUDE">
15            <!ENTITY % html PUBLIC "-//connolly hal.com//DTD WWW HTML 1.8//EN">
16            %html;
17            ]>
18            <TITLE>Here's my doc</TITLE>
19            <p>It uses lots of optional features
20    
21     In practice, if you're using sgmls to validate your docs,
22     you can stick the <!DOCTYPE [...]> in a separate file and
23     validate with:
24            sgmls -s doctype.sgml foo.html
25     -->
26    
27    <!ENTITY % HTML.Minimal  "IGNORE">
28    <!ENTITY % HTML.Obsolete "IGNORE">
29    <!ENTITY % HTML.Prescriptive "IGNORE">
30    
31    <![ %HTML.Minimal [
32            <!ENTITY % HTML.linkRelationships "IGNORE">
33            <!ENTITY % HTML.linkMethods "IGNORE">
34            <!ENTITY % HTML.linkRedundantInfo "IGNORE">
35            <!ENTITY % HTML.forms "IGNORE">
36            <!-- @@ nested lists -->
37            <!-- @@ phrases -->
38            <!-- @@ headers inside A -->
39            <!-- @@ nested phrases, fonts -->
40            ]]>
41            
42    <![ %HTML.Obsolete [
43            <!ENTITY % HTML.titleCDATA "INCLUDE">
44            <!ENTITY % HTML.litCDATA "INCLUDE">
45            <!ENTITY % HTML.pSeparator "INCLUDE">
46            ]]>
47    
48    <![ %HTML.Prescriptive [
49            <!--
50            This feature test entity prescribes that certain
51            idioms detract from the structural integrity of an
52            HTML document, and are therefore disallowed.
53            -->
54            <!ENTITY % HTML.font-phrase "IGNORE">
55            <!ENTITY % HTML.anchorNameCDATA "IGNORE">
56            <!ENTITY % HTML.PLAINTEXT "IGNORE">
57            <!ENTITY % HTML.bodyBlockOnly "INCLUDE">
58            ]]>
59    
60    <!ENTITY HTML.Version
61            "-//connolly hal.com//DTD WWW HTML $Date 1994/04/19 17:24:06 $//EN"
62            -- public identifier for "default" version                       --
63            -- actually, take the $'s out to get the real public identifer,  --
64            -- since $ is illegal in public identifier. When DTD stabilizes, --
65            -- we'll need to stop using RCS keywords to version the pub id   --
66            >
67    
68    <!ENTITY % HTML.bodyBlockOnly "IGNORE"
69            -- only allow block elements in the BODY element
70            This means all paragraphs need to start with a <P> tag.
71            -->
72    
73    <!ENTITY % HTML.pSeparator "IGNORE"
74            -- use P element as paragraph separator, rather that container.
75            -->
76    
77    <!ENTITY % HTML.linkRelationships "INCLUDE"
78            -- Adding markup to links to show the relationship between
79            ends of a link
80            see http://info.cern.ch/hypertext/WWW/MarkUp/Relationships.html
81            -->
82    
83    <!ENTITY % HTML.linkMethods "INCLUDE"
84            -- Adding markup to links to show the methods supported
85            by the referent object
86            see http://info.cern.ch/hypertext/WWW/MarkUp/Elements/A.html
87            -->
88    
89    <!ENTITY % HTML.linkRedundantInfo "INCLUDE"
90            -- Adding markup to links to give redundant information
91            like URN, content type, title...
92            -->
93    
94    <!ENTITY % HTML.anchorNameCDATA "INCLUDE"
95            -- Anchor names should be distinct. SGML parser can validate
96            this if the NAME attribute of the A element is declared as ID.
97            But that restricts the syntax of an anchor name to an SGML name,
98            i.e. a letter followed by letters, numbers, periods and dashes,
99            up to NAMELEN (34) characters long.
100            -->
101    
102    <!ENTITY % HTML.PLAINTEXT "INCLUDE"
103            -- Support for the <PLAINTEXT> tag as a sign of the
104            end of th HTML data stream and the beginning of a stream
105            of text/plain data
106            -->
107    
108    <!ENTITY % HTML.titleCDATA "IGNORE"
109            -- Is the TITLE element #PCDATA, RCDATA, or CDATA content?
110            On Mosaic, it's #PCDATA, but in the linemode browser,
111            it's more like CDATA, but not quite.
112            -->
113    
114    <!ENTITY % HTML.NEXTID "INCLUDE"
115            -- Used by the NeXT implementation to keep track of the
116            next anchor id to use
117            -->
118    
119    <!ENTITY % HTML.font-phrase "INCLUDE"
120            -- allow B, I, TT, U outside PRE,
121            CITE, VAR, etc. inside PRE
122            -->
123    
124    <!ENTITY % HTML.KEY "IGNORE"
125            -- There was once a KEY element, for keyboard keys, menu items,
126            buttons, etc. but it's not supported or widely documented
127            -->
128    
129    <!ENTITY % HTML.U "IGNORE"
130            -- There was also a U element, but since it clashes with
131            the common pracitce of underlining hypertext links, it is
132            not widely supported
133            -->
134    
135    <!ENTITY % HTML.litCDATA "IGNORE"
136            -- treat XMP, LISTING as CDATA, as per linemodeWWW
137            -->
138    
139    <!ENTITY % HTML.forms "INCLUDE"
140            -- Support for forms as per
141    http://www.ncsa.uiuc.edu/SDG/Software/Mosaic/Docs/fill-out-forms/overview.html
142            -->
143    
144  <!-- DTD definitions -->  <!-- DTD definitions -->
145    
146  <!ENTITY % URL "CDATA"  <!ENTITY % heading "H1|H2|H3|H4|H5|H6" >
147          -- The term URL means a CDATA attribute  <!ENTITY % list " UL | OL | DIR | MENU ">
148             whose value is a Uniform Resource Locator,  <!ENTITY % literal " XMP | LISTING ">
149             as defined. (A URN may also be usable here when defined.)  
150    <!ENTITY % URI "CDATA"
151            -- The term URI means a CDATA attribute
152               whose value is a Uniform Resource Identifier,
153               as defined by
154            "Universal Resource Identifiers" by Tim Berners-Lee
155            aka http://info.cern.ch/hypertext/WWW/Addressing/URL/URI_Overview.html
156    
157            Note that CDATA attributes are limited by the LITLEN
158            capacity (1024 in the current version of html.decl),
159            so that URIs in HTML have a bounded length.
160    
161            @@ Need to discuss relative addresses.
162          -->          -->
163    
164  <!ENTITY % Content-Type "CDATA" -- meaning a MIME content type -->  <!ENTITY % Content-Type "CDATA"
165            -- meaning a MIME content type, as per RFC1521
166            -->
167    
168  <!ENTITY % linkattributes  <![ %HTML.anchorNameCDATA [ <!ENTITY % anchor-name "CDATA"> ]]>
169          "HREF %URL;  #IMPLIED  <!ENTITY % anchor-name "ID">
170    
171    <![ %HTML.linkRelationships [ <!ENTITY % linkRelAttrs "
172          REL CDATA #IMPLIED -- forward relationship type --          REL CDATA #IMPLIED -- forward relationship type --
173          REV CDATA #IMPLIED -- reversed relationship type          REV CDATA #IMPLIED -- reversed relationship type
174                                to referent data:                                to referent data:
175    
176                                  PARENT CHILD, SIBLING, NEXT, TOP,                                  PARENT CHILD, SIBLING, NEXT, TOP,
177                                  DEFINITION, UPDATE, ORIGINAL etc. --                                  DEFINITION, UPDATE, ORIGINAL etc. --
178            "> ]]>
179    <!ENTITY % linkRelAttrs "">
180    
181    <![ %HTML.linkRedundantInfo [ <!ENTITY % linkRedundantAttrs "
182          URN CDATA #IMPLIED -- universal resource number --          URN CDATA #IMPLIED -- universal resource number --
183    
184          TITLE CDATA #IMPLIED -- advisory only --          TITLE CDATA #IMPLIED -- advisory only --
185            "> ]]>
186    <!ENTITY % linkRedundantAttrs "">
187    
188    <![ %HTML.linkMethods [ <!ENTITY % linkMethodAttrs "
189          METHODS NAMES #IMPLIED -- supported public methods of the object:          METHODS NAMES #IMPLIED -- supported public methods of the object:
190                                          TEXTSEARCH, GET, HEAD, ... --                                          TEXTSEARCH, GET, HEAD, ... --
191            "> ]]>
192    <!ENTITY % linkMethodAttrs "">
193    
194          --@# content-type --  <!ENTITY % linkattributes
195            "NAME %anchor-name #IMPLIED
196            HREF %URI;  #IMPLIED
197            %linkRelAttrs;
198            %linkRedundantAttrs;
199            %linkMethodAttrs;
200          ">          ">
201    
202    
203  <!-- Document Element -->  <!-- Document Element -->
204    
 <!ELEMENT HTML O O  (HEAD, BODY)>  
   
 <!-- Head -->  
205    
206  <!ELEMENT HEAD O O  ( TITLE?  & ISINDEX? & NEXTID? & LINK*  <![ %HTML.PLAINTEXT [ <!ENTITY % obsolete-plaintext ", PLAINTEXT?"> ]]>
207                                & BASE?)>  <!ENTITY % obsolete-plaintext "">
208    
209  <!ELEMENT NEXTID - O EMPTY -- @# obsolete -->  <!ENTITY % html-content "HEAD, BODY %obsolete-plaintext;">
210  <!ATTLIST NEXTID  <!ELEMENT HTML O O  (%html-content)>
         N ID #REQUIRED -- next available id -->  
211    
212  <!ELEMENT TITLE - -  (#PCDATA)  <![ %HTML.NEXTID [  <!ENTITY % head-content "TITLE? & ISINDEX? & LINK* & BASE?
213                            & NEXTID?"> ]]>
214    <!ENTITY % head-content "TITLE & ISINDEX? & LINK* & BASE?">
215    <!ELEMENT HEAD O O  (%head-content)>
216    
217    <![ %HTML.titleCDATA [ <!ENTITY % title-content "CDATA"> ]]>
218    <!ENTITY % title-content "(#PCDATA)">
219    <!ELEMENT TITLE - -  %title-content
220            -- The TITLE element is not considered part of the flow of text.            -- The TITLE element is not considered part of the flow of text.
221               It should be displayed, for example as the page header or               It should be displayed, for example as the page header or
222               window title.               window title.
# Line 61  Line 227 
227               documents containing ISINDEX.               documents containing ISINDEX.
228            -->            -->
229    
230    <!ELEMENT NEXTID - O EMPTY>
231    <!ATTLIST NEXTID N %anchor-name #REQUIRED
232              -- The number should be a name suitable for use
233                 for the ID of a new element. When used, the value
234                 has its numeric part incremented. EG Z67 becomes Z68
235              -->
236  <!ELEMENT LINK - O EMPTY>  <!ELEMENT LINK - O EMPTY>
237  <!ATTLIST LINK  <!ATTLIST LINK
238          %linkattributes          %linkattributes>
         >  
239                    
240  <!ELEMENT BASE - O EMPTY    -- Reference context for URLS -->  <!ELEMENT BASE - O EMPTY    -- Reference context for URIs -->
241  <!ATTLIST BASE  <!ATTLIST BASE
242          HREF %URL; #IMPLIED  
243            HREF %URI; #REQUIRED
244    
245          >          >
246    
247    <![ %HTML.KEY [
248            <!ENTITY % key-emph "| KEY">
249            ]]>
250    <!ENTITY % key-emph "">
251    
252    <![ %HTML.U [
253            <!ENTITY % u-font "| U">
254            ]]>
255    <!ENTITY % u-font "">
256    
257    <!ENTITY % font "TT | B | I %u-font">
258    <!ENTITY % phrase "EM | STRONG | CODE | SAMP | KBD | VAR | DFN | CITE
259             | STRIKE %key-emph">
260    
261    
262    <![ %HTML.font-phrase [
263            <!ENTITY % obsolete-font "| %font">
264            <!ENTITY % obsolete-phrase "| %phrase">
265            ]]>
266    <!ENTITY % obsolete-font "">
267    <!ENTITY % obsolete-phrase "">
268    <![ %HTML.pSeparator [
269            <!ENTITY % obsolete-p "| P">
270            ]]>
271    <!ENTITY % obsolete-p "">
272    
273  <!-- Body -->  <!ENTITY % inline "%phrase %obsolete-font">
274    <!ENTITY % pre-inline "%font %obsolete-phrase %obsolete-p">
275    
276  <!ELEMENT BODY O O  ANY -- empty P version @# -->  <!ENTITY % text "#PCDATA | IMG | %inline | BR %obsolete-p">
277    
278  <!-- Text -->  <!ENTITY % htext "A | %text"    -- Plus links, no structure -->
279    
280  <!ENTITY % inline "EM | STRONG |  <![ %HTML.font-phrase [ <!ENTITY % font-content "(%htext)+"> ]]>
281                          CODE | SAMP | KBD | KEY | VAR | DFN | CITE "  <!ENTITY % font-content "#PCDATA">
282          >  <!ELEMENT (%font;) - - (%font-content;)>
 <!ENTITY % fonts "B | I | U | TT">  
283    
284  <!ENTITY % text "#PCDATA | IMG | %inline; | %fonts; | BR | P"  <!ELEMENT (%phrase;) - - (%htext)+>
         -- @# yuk: P in textflows --  
          --@# BR -> &br; --  
          --@# yuk: fonts -- >  
285    
286  <!ENTITY % htext "A | %text"    -- Plus links, no structure -->  <!ENTITY % pre "PRE | XMP | LISTING">
287    
288    <![ %HTML.forms [ <!ENTITY % block-form "| FORM | ISINDEX"> ]]>
289    <!ENTITY % block-form "">
290    
291    <![ %HTML.pSeparator [
292            <!ENTITY % obsolete-htext "| %htext">
293            <!ENTITY % block-p "">
294            ]]>
295    <!ENTITY % obsolete-htext "| A">
296    <!ENTITY % block-p "| P ">
297    
298    <!ENTITY % block "HR | %list | DL
299                    | %pre | BLOCKQUOTE | ADDRESS
300                    %block-form %block-p">
301    
302    
303    <![ %HTML.bodyBlockOnly [
304            <!ENTITY % current-htext "">
305            ]]>
306    <!ENTITY % current-htext "| %htext">
307    
308  <!ELEMENT (%inline;) - - (%htext)+>  <!ENTITY % body-content "%heading | %block %current-htext">
309  <!ELEMENT (%fonts;)  - - (%htext)+>  <!ELEMENT BODY O O  (%body-content)*>
310    
311  <!ELEMENT A     - -  ANY -(A)>  
312    <!ELEMENT A     - - (%heading|%block|%text)+ -(A)
313            -- @# Technically, this allows silliness like:
314                    <H2><A>xyz<H1>h1</H1></A></H2>
315            The right way to do anchors outside of %htext is more like:
316                    <as id=z1><H2>lkjlkj</h2><ae start=z1>
317            -->
318  <!ATTLIST A  <!ATTLIST A
319          NAME NMTOKEN #IMPLIED -- @# dangit! this should be ID! --          %linkattributes;
         %linkattributes;  
320          >          >
321    
322  <!ELEMENT IMG    - O EMPTY --  Embedded image -->  <!ELEMENT IMG    - O EMPTY --  Embedded image -->
323  <!ATTLIST IMG  <!ATTLIST IMG
324          SRC %URL;  #IMPLIED     -- URL of document to embed --          SRC %URI;  #IMPLIED     -- URI of document to embed --
325          ALT CDATA #IMPLIED          ALT CDATA #IMPLIED
326          ALIGN (top|middle|bottom|left|center|right) #IMPLIED --@#supported?--          ALIGN (top|middle|bottom) #IMPLIED
327            ISMAP (ISMAP) #IMPLIED
328          >          >
329    
330    
331  <!ELEMENT P     - O EMPTY -- paragraph separator @# -->  <![ %HTML.pSeparator [ <!ENTITY % p-content "EMPTY"> ]]>
332    <!ENTITY % p-content "(%htext)+">
333    <!ELEMENT P     - O %p-content>
334  <!ELEMENT HR    - O EMPTY -- horizontal rule -->  <!ELEMENT HR    - O EMPTY -- horizontal rule -->
335  <!ELEMENT BR    - O EMPTY -- @# BR -> &br; -->  <!ELEMENT BR    - O EMPTY -- @# BR -> &br; -->
336    
 <!-- Headings -->  
   
 <!ENTITY % heading "H1|H2|H3|H4|H5|H6" >  
337  <!ELEMENT ( %heading )  - -  (%htext;)+>  <!ELEMENT ( %heading )  - -  (%htext;)+>
338    
   
 <!-- Pre-formatted Text -->  
   
 <!ENTITY % pre "PRE | XMP | LISTING" -- @# treat XMP like pre? -->  
   
 <!ELEMENT PRE - - (#PCDATA | %fonts | %inline | A | BR)+>  
                 <!-- @# yuk: VAR, CITE etc. in PRE -->  
                 <!-- @# P in PRE ??-->  
                 <!-- @# BR -> &br; -->  
 <!ELEMENT (XMP|LISTING) - - RCDATA>  
 <!-- @# PLAINTEXT?? -->  
 <!ATTLIST (%pre;)  
         WIDTH NUMBER #implied  
         >  
   
 <!-- Block Elements -->  
   
 <!ENTITY % list " UL | OL | DIR | MENU ">  
   
 <!ENTITY % block                -- as htext but also nested structure --  
                         "HR | %list | DL  
                         | %pre; | BLOCKQUOTE | FIG | ADDRESS  
                         | FORM">  
   
339  <!ELEMENT DL    - -  (DT*, DD?)+>  <!ELEMENT DL    - -  (DT*, DD?)+>
340  <!ATTLIST DL  <!ATTLIST DL
341          STYLE (COMPACT) #IMPLIED>          COMPACT (COMPACT) #IMPLIED>
342    
343  <!ELEMENT DT    - O (%htext)+>  <!ELEMENT DT    - O (%htext)+>
344  <!ELEMENT DD    - O (%htext|%block)+>  <!ELEMENT DD    - O (%htext|%block)+>
345    
346  <!ELEMENT (%list) - -  (LI)+>  <!ELEMENT (%list) - -  (LI)+>
347    
348  <!ELEMENT LI    - O (%htext|%block)+>  <!ELEMENT LI    - O (%htext|%block)+>
349    
350  <!ELEMENT BLOCKQUOTE - - ((%htext)+, ADDRESS?)+ -- @# Hmm... --  <!ELEMENT BLOCKQUOTE - - (%htext|%block)+ -- @# Hmm... --
351          -- for quoting some other source -->          -- for quoting some other source -->
352    
353  <!ELEMENT ADDRESS - - (%htext;)+>  <!ELEMENT ADDRESS - - (%htext;|%block)+>
354    
355    <!ELEMENT PRE - - (#PCDATA|%pre-inline|A)+>
356    <!ATTLIST PRE
357            WIDTH NUMBER #implied
358            >
359    
360    <!-- Mnemonic character entities. -->
361    
362    <!ENTITY % ISOlat1 PUBLIC
363      "ISO 8879:1986//ENTITIES Added Latin 1//EN">
364    %ISOlat1;
365    
366    <!ENTITY #DEFAULT SDATA "&#38;unkown;" --display the markup-->
367    <!ENTITY amp CDATA "&#38;"     -- ampersand -->
368    <!ENTITY gt CDATA "&#62;"      -- greater than -->
369    <!ENTITY lt CDATA "&#60;"      -- less than -->
370    <!ENTITY quot CDATA "&#34;"    -- double quote -->
371    
372    <!-- Processing Entities -->
373    
374    <!ENTITY nbsp "<? nonbreaking-space>">
375    <!-- @# should add entites for processing instructions
376            for line break, centering, etc. -->
377    
 <!ELEMENT FIG - - (%htext;)+>  
378    
379  <!-- Forms  -->  <!-- Forms  -->
380    <![ %HTML.forms [
381    
382  <!ENTITY % HTTP-Method "(GET | POST)">  <!ENTITY % HTTP-Method "(GET | POST)">
383  <!ELEMENT FORM - - ANY -(FORM) +(INPUT|SELECT|TEXTAREA)>  <!ELEMENT FORM - - (%body-content)* -(FORM) +(INPUT|SELECT|TEXTAREA)>
384  <!ATTLIST FORM  <!ATTLIST FORM
385          ACTION %URL #REQUIRED          ACTION %URI #REQUIRED
386          METHOD %HTTP-Method #IMPLIED -- @# MAILTO? --          METHOD %HTTP-Method #IMPLIED -- @# MAILTO? --
387          ENCTYPE %Content-Type; #IMPLIED          ENCTYPE %Content-Type; #IMPLIED
388          >          >
# Line 175  Line 395 
395          TYPE %InputType #IMPLIED -- @# defaults to TEXT?? --          TYPE %InputType #IMPLIED -- @# defaults to TEXT?? --
396          NAME CDATA #IMPLIED -- required for all but submit and reset --          NAME CDATA #IMPLIED -- required for all but submit and reset --
397          VALUE CDATA #IMPLIED          VALUE CDATA #IMPLIED
398          SRC %URL #IMPLIED -- for image inputs --          SRC %URI #IMPLIED -- for image inputs --
399          STATE (CHECKED) #IMPLIED          CHECKED (CHECKED) #IMPLIED
400          SIZE CDATA #IMPLIED -- @# should be NUMBERS: delimit with space, not comma --          SIZE CDATA #IMPLIED -- @# should be NUMBERS: delimit with space, not comma --
401          MAXLENGTH NUMBER #IMPLIED          MAXLENGTH NUMBER #IMPLIED
402          ALIGN (top|middle|bottom|left|center|right) #IMPLIED --@#supported?--          ALIGN (top|middle|bottom|left|center|right) #IMPLIED --@#supported?--
# Line 186  Line 406 
406  <!ATTLIST SELECT  <!ATTLIST SELECT
407          NAME CDATA #REQUIRED          NAME CDATA #REQUIRED
408          SIZE NUMBER #IMPLIED          SIZE NUMBER #IMPLIED
409          SELECTIONS (MULTIPLE) #IMPLIED          MULTIPLE (MULTIPLE) #IMPLIED
410          >          >
411    
412  <!ELEMENT OPTION - O (#PCDATA)>  <!ELEMENT OPTION - O (#PCDATA)>
413  <!ATTLIST OPTION  <!ATTLIST OPTION
414          STATE (SELECTED) #IMPLIED          SELECTED (SELECTED) #IMPLIED
415          VALUE CDATA #IMPLIED          VALUE CDATA #IMPLIED
416          >          >
417    
# Line 201  Line 421 
421          ROWS NUMBER #REQUIRED -- @#implied? --          ROWS NUMBER #REQUIRED -- @#implied? --
422          COLS NUMBER #REQUIRED          COLS NUMBER #REQUIRED
423          >          >
424    ]]>
425    
426  <!-- Mnemonic character entities. -->  <!-- Obsolete Elements  -->
427    
428  <!ENTITY % ISOlat1 PUBLIC  <![ %HTML.litCDATA [ <!ENTITY % lit-content "CDATA"> ]]>
429    "ISO 8879:1986//ENTITIES Added Latin 1//EN">  <!ENTITY % lit-content "RCDATA">
430  %ISOlat1;  <!ELEMENT (%literal) - -  %lit-content>
   
 <!ENTITY amp "&#38;"     -- ampersand -->  
 <!ENTITY gt "&#62;"      -- greater than -->  
 <!ENTITY lt "&#60;"      -- less than -->  
 <!ENTITY nbsp "<? nonbreaking-space>">  
 <!-- @# should add entites for processing instructions  
         for line break, centering, etc. -->  
431    
432    <![ %HTML.PLAINTEXT [
433    <!ELEMENT PLAINTEXT - O EMPTY>
434    ]]>
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