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Revision 1.23 - (show annotations) (download)
Sat Jan 28 05:59:34 1995 UTC (29 years, 3 months ago) by connolly
Branch: MAIN
Changes since 1.22: +106 -93 lines
Spacing changes in DTD to meet production needs.
Some parameter entity changes for errors that SGMLs doesn't detect.

1 <!-- html.dtd
2
3 Document Type Definition for the HyperText Markup Language
4 (HTML DTD)
5
6 $Id: html.dtd,v 1.22 1994/11/30 23:45:40 connolly Exp $
7
8 Author: Daniel W. Connolly <connolly@hal.com>
9 See Also: html.decl, html-0.dtd, html-1.dtd
10 http://www.hal.com/%7Econnolly/html-spec/index.html
11 http://info.cern.ch/hypertext/WWW/MarkUp2/MarkUp.html
12 -->
13
14 <!ENTITY % HTML.Version
15 "-//IETF//DTD HTML 2.0//EN"
16
17 -- Typical usage:
18
19 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
20 <html>
21 ...
22 </html>
23 --
24 >
25
26
27 <!--============ Feature Test Entities ========================-->
28
29 <!ENTITY % HTML.Recommended "IGNORE"
30 -- Certain features of the language are necessary for
31 compatibility with widespread usage, but they may
32 compromise the structural integrity of a document.
33 This feature test entity enables a more prescriptive
34 document type definition that eliminates
35 those features.
36 -->
37
38 <![ %HTML.Recommended [
39 <!ENTITY % HTML.Deprecated "IGNORE">
40 ]]>
41
42 <!ENTITY % HTML.Deprecated "INCLUDE"
43 -- Certain features of the language are necessary for
44 compatibility with earlier versions of the specification,
45 but they tend to be used an implemented inconsistently,
46 and their use is deprecated. This feature test entity
47 enables a document type definition that eliminates
48 these features.
49 -->
50
51 <!ENTITY % HTML.Highlighting "INCLUDE"
52 -- Use this feature test entity to validate that a
53 document uses no highlighting tags, which may be
54 ignored on minimal implementations.
55 -->
56
57 <!ENTITY % HTML.Forms "INCLUDE"
58 -- Use this feature test entity to validate that a document
59 contains no forms, which may not be supported in minimal
60 implementations
61 -->
62
63 <!--============== Imported Names ==============================-->
64
65 <!ENTITY % Content-Type "CDATA"
66 -- meaning an internet media type
67 (aka MIME content type, as per RFC1521)
68 -->
69
70 <!ENTITY % HTTP-Method "GET | POST"
71 -- as per HTTP specification, in progress
72 -->
73
74 <!ENTITY % URI "CDATA"
75 -- The term URI means a CDATA attribute
76 whose value is a Uniform Resource Identifier,
77 as defined by
78 "Universal Resource Identifiers" by Tim Berners-Lee
79 aka RFC 1630
80
81 Note that CDATA attributes are limited by the LITLEN
82 capacity (1024 in the current version of html.decl),
83 so that URIs in HTML have a bounded length.
84
85 -->
86
87
88 <!--========= DTD "Macros" =====================-->
89
90 <!ENTITY % heading "H1|H2|H3|H4|H5|H6">
91
92 <!ENTITY % list " UL | OL | DIR | MENU " >
93
94
95 <!--======= Character mnemonic entities =================-->
96
97 <!ENTITY % ISOlat1 PUBLIC
98 "ISO 8879-1986//ENTITIES Added Latin 1//EN//HTML">
99 %ISOlat1;
100
101 <!ENTITY amp CDATA "&#38;" -- ampersand -->
102 <!ENTITY gt CDATA "&#62;" -- greater than -->
103 <!ENTITY lt CDATA "&#60;" -- less than -->
104 <!ENTITY quot CDATA "&#34;" -- double quote -->
105
106
107 <!--========= SGML Document Access (SDA) Parameter Entities =====-->
108
109 <!-- HTML 2.0 contains SGML Document Access (SDA) fixed attributes
110 in support of easy transformation to the International Committee
111 for Accessible Document Design (ICADD) DTD
112 "-//EC-USA-CDA/ICADD//DTD ICADD22//EN".
113 ICADD applications are designed to support usable access to
114 structured information by print-impaired individuals through
115 Braille, large print and voice synthesis. For more information on
116 SDA & ICADD:
117 - ISO 12083:1993, Annex A.8, Facilities for Braille,
118 large print and computer voice
119 - ICADD ListServ
120 <ICADD%ASUACAD.BITNET@ARIZVM1.ccit.arizona.edu>
121 - Usenet news group bit.listserv.easi
122 - Recording for the Blind, +1 800 221 4792
123 -->
124
125 <!ENTITY % SDAFORM "SDAFORM CDATA #FIXED"
126 -- one to one mapping -->
127 <!ENTITY % SDARULE "SDARULE CDATA #FIXED"
128 -- context-sensitive mapping -->
129 <!ENTITY % SDAPREF "SDAPREF CDATA #FIXED"
130 -- generated text prefix -->
131 <!ENTITY % SDASUFF "SDASUFF CDATA #FIXED"
132 -- generated text suffix -->
133 <!ENTITY % SDASUSP "SDASUSP NAME #FIXED"
134 -- suspend transform process -->
135
136
137 <!--========== Text Markup =====================-->
138
139 <![ %HTML.Highlighting [
140
141 <!ENTITY % font " TT | B | I ">
142
143 <!ENTITY % phrase "EM | STRONG | CODE | SAMP | KBD | VAR | CITE ">
144
145 <!ENTITY % text "#PCDATA | A | IMG | BR | %phrase | %font">
146
147 <!ELEMENT (%font;|%phrase) - - (%text)*>
148 <!ATTLIST ( TT | CODE | SAMP | KBD | VAR )
149 %SDAFORM; "Lit"
150 >
151 <!ATTLIST ( B | STRONG )
152 %SDAFORM; "B"
153 >
154 <!ATTLIST ( I | EM | CITE )
155 %SDAFORM; "It"
156 >
157
158 <!-- <TT> Typewriter text -->
159 <!-- <B> Bold text -->
160 <!-- <I> Italic text -->
161
162 <!-- <EM> Emphasized phrase -->
163 <!-- <STRONG> Strong emphais -->
164 <!-- <CODE> Source code phrase -->
165 <!-- <SAMP> Sample text or characters -->
166 <!-- <KBD> Keyboard phrase, e.g. user input -->
167 <!-- <VAR> Variable phrase or substituable -->
168 <!-- <CITE> Name or title of cited work -->
169
170 <!ENTITY % pre.content "#PCDATA | A | HR | BR | %font | %phrase">
171
172 ]]>
173
174 <!ENTITY % text "#PCDATA | A | IMG | BR">
175
176 <!ELEMENT BR - O EMPTY>
177 <!ATTLIST BR
178 %SDAPREF; "&#RE;"
179 >
180
181 <!-- <BR> Line break -->
182
183
184 <!--========= Link Markup ======================-->
185
186 <![ %HTML.Recommended [
187 <!ENTITY % linkName "ID">
188 ]]>
189
190 <!ENTITY % linkName "CDATA">
191
192 <!ENTITY % linkType "NAME"
193 -- a list of these will be specified at a later date -->
194
195 <!ENTITY % linkExtraAttributes
196 "REL %linkType #IMPLIED
197 REV %linkType #IMPLIED
198 URN CDATA #IMPLIED
199 TITLE CDATA #IMPLIED
200 METHODS NAMES #IMPLIED
201 ">
202
203 <![ %HTML.Recommended [
204 <!ENTITY % A.content "(%text)*"
205 -- <H1><a name="xxx">Heading</a></H1>
206 is preferred to
207 <a name="xxx"><H1>Heading</H1></a>
208 -->
209 ]]>
210
211 <!ENTITY % A.content "(%heading|%text)*">
212
213 <!ELEMENT A - - %A.content -(A)>
214 <!ATTLIST A
215 HREF %URI #IMPLIED
216 NAME %linkName #IMPLIED
217 %linkExtraAttributes;
218 %SDAPREF; "<?SDATrans A: #AttList>"
219 >
220 <!-- <A> Anchor; source/destination of link -->
221 <!-- <A NAME="..."> Name of this anchor -->
222 <!-- <A HREF="..."> Address of link destination -->
223 <!-- <A URN="..."> Permanent address of destination -->
224 <!-- <A REL=...> Relationship to destination -->
225 <!-- <A REV=...> Relationship of destination to this -->
226 <!-- <A TITLE="..."> Title of destination (advisory) -->
227 <!-- <A METHODS="..."> Operations on destination (advisory) -->
228
229
230 <!--========== Images ==========================-->
231
232 <!ELEMENT IMG - O EMPTY>
233 <!ATTLIST IMG
234 SRC %URI; #REQUIRED
235 ALT CDATA #IMPLIED
236 ALIGN (top|middle|bottom) #IMPLIED
237 ISMAP (ISMAP) #IMPLIED
238 %SDAPREF; "<Fig><?SDATrans Img: #AttList>#AttVal(Alt)</Fig>"
239 >
240
241 <!-- <IMG> Image; icon, glyph or illustration -->
242 <!-- <IMG SRC="..."> Address of image object -->
243 <!-- <IMG ALT="..."> Textual alternative -->
244 <!-- <IMG ALIGN=...> Position relative to text -->
245 <!-- <IMG ISMAP> Each pixel can be a link -->
246
247 <!--========== Paragraphs=======================-->
248
249 <!ELEMENT P - O (%text)*>
250 <!ATTLIST P
251 %SDAFORM; "Para"
252 >
253
254 <!-- <P> Paragraph -->
255
256
257 <!--========== Headings, Titles, Sections ===============-->
258
259 <!ELEMENT HR - O EMPTY>
260 <!ATTLIST HR
261 %SDAPREF; "<Para><?SDATrans HR: #AttList></Para>"
262 >
263
264 <!-- <HR> Horizontal rule -->
265
266 <!ELEMENT ( %heading ) - - (%text;)*>
267 <!ATTLIST H1
268 %SDAFORM; "H1"
269 >
270 <!ATTLIST H2
271 %SDAFORM; "H2"
272 >
273 <!ATTLIST H3
274 %SDAFORM; "H3"
275 >
276 <!ATTLIST H4
277 %SDAFORM; "H4"
278 >
279 <!ATTLIST H5
280 %SDAFORM; "H5"
281 >
282 <!ATTLIST H6
283 %SDAFORM; "H6"
284 >
285
286 <!-- <H1> Heading, level 1 -->
287 <!-- <H2> Heading, level 2 -->
288 <!-- <H3> Heading, level 3 -->
289 <!-- <H4> Heading, level 4 -->
290 <!-- <H5> Heading, level 5 -->
291 <!-- <H6> Heading, level 6 -->
292
293
294 <!--========== Text Flows ======================-->
295
296 <![ %HTML.Forms [
297 <!ENTITY % block.forms "BLOCKQUOTE | FORM | ISINDEX">
298 ]]>
299
300 <!ENTITY % block.forms "BLOCKQUOTE">
301
302 <![ %HTML.Deprecated [
303 <!ENTITY % preformatted "PRE | XMP | LISTING">
304 ]]>
305
306 <!ENTITY % preformatted "PRE">
307
308 <!ENTITY % block "P | %list | DL
309 | %preformatted
310 | %block.forms">
311
312 <!ENTITY % flow "(%text|%block)*">
313
314 <!ENTITY % pre.content "#PCDATA | A | HR | BR">
315 <!ELEMENT PRE - - (%pre.content)*>
316 <!ATTLIST PRE
317 WIDTH NUMBER #implied
318 %SDAFORM; "Lit"
319 %SDAPREF; "<?SDATrans Pre: #AttList>"
320 >
321
322 <!-- <PRE> Preformatted text -->
323 <!-- <PRE WIDTH=...> Maximum characters per line -->
324
325 <![ %HTML.Deprecated [
326
327 <!ENTITY % literal "CDATA"
328 -- historical, non-conforming parsing mode where
329 the only markup signal is the end tag
330 in full
331 -->
332
333 <!ELEMENT (XMP|LISTING) - - %literal>
334 <!ATTLIST XMP
335 %SDAFORM; "Lit"
336 %SDAPREF; "Example:&#RE;"
337 >
338 <!ATTLIST LISTING
339 %SDAFORM; "Lit"
340 %SDAPREF; "Listing:&#RE;"
341 >
342
343 <!-- <XMP> Example section -->
344 <!-- <LISTING> Computer listing -->
345
346 <!ELEMENT PLAINTEXT - O %literal>
347 <!-- <PLAINTEXT> Plain text passage -->
348
349 <!ATTLIST PLAINTEXT
350 %SDAFORM; "Lit"
351 >
352 ]]>
353
354
355 <!--========== Lists ==================-->
356
357 <!ELEMENT DL - - (DT | DD)+>
358 <!ATTLIST DL
359 COMPACT (COMPACT) #IMPLIED
360 %SDAFORM; "List"
361 %SDAPREF; "<?SDATrans DL: #AttList>"
362 >
363
364 <!ELEMENT DT - O (%text)*>
365 <!ATTLIST DT
366 %SDAFORM; "Term"
367 >
368
369 <!ELEMENT DD - O %flow>
370 <!ATTLIST DD
371 %SDAFORM; "LItem"
372 >
373
374 <!-- <DL> Definition list, or glossary -->
375 <!-- <DL COMPACT> Compact style list -->
376 <!-- <DT> Term in definition list -->
377 <!-- <DD> Definition of term -->
378
379 <!ELEMENT (OL|UL) - - (LI)+>
380 <!ATTLIST OL
381 COMPACT (COMPACT) #IMPLIED
382 %SDAFORM; "List"
383 %SDAPREF; "<?SDATrans OL: #AttList>"
384 >
385 <!ATTLIST UL
386 COMPACT (COMPACT) #IMPLIED
387 %SDAFORM; "List"
388 %SDAPREF; "<?SDATrans UL: #AttList>"
389 >
390 <!-- <UL> Unordered list -->
391 <!-- <UL COMPACT> Compact list style -->
392 <!-- <OL> Ordered, or numbered list -->
393 <!-- <OL COMPACT> Compact list style -->
394
395
396 <!ELEMENT (DIR|MENU) - - (LI)+ -(%block)>
397 <!ATTLIST DIR
398 COMPACT (COMPACT) #IMPLIED
399 %SDAFORM; "List"
400 %SDAPREF;
401 "<?SDATrans Dir: #AttList><LHead>Directory</LHead>"
402 >
403 <!ATTLIST MENU
404 COMPACT (COMPACT) #IMPLIED
405 %SDAFORM; "List"
406 %SDAPREF; "<?SDATrans Menu: #AttList><LHead>Menu</LHead>"
407 >
408
409 <!-- <DIR> Directory list -->
410 <!-- <DIR COMPACT> Compact list style -->
411 <!-- <MENU> Menu list -->
412 <!-- <MENU COMPACT> Compact list style -->
413
414 <!ELEMENT LI - O %flow>
415 <!ATTLIST LI
416 %SDAFORM; "LItem"
417 >
418
419 <!-- <LI> List item -->
420
421 <!--========== Document Body ===================-->
422
423 <![ %HTML.Recommended [
424 <!ENTITY % body.content "(%heading|%block|HR|ADDRESS|IMG)*"
425 -- <h1>Heading</h1>
426 <p>Text ...
427 is preferred to
428 <h1>Heading</h1>
429 Text ...
430 -->
431 ]]>
432
433 <!ENTITY % body.content "(%heading | %text | %block |
434 HR | ADDRESS)*">
435
436 <!ELEMENT BODY O O %body.content>
437 <!ATTLIST BODY
438 %SDAPREF; "<?SDATrans Body: #AttList>"
439 >
440
441 <!-- <BODY> Document body -->
442
443 <!ELEMENT BLOCKQUOTE - - %body.content>
444 <!ATTLIST BLOCKQUOTE
445 %SDAFORM; "BQ"
446 >
447
448 <!-- <BLOCKQUOTE> Quoted passage -->
449
450 <!ELEMENT ADDRESS - - (%text|P)*>
451 <!ATTLIST ADDRESS
452 %SDAFORM; "Lit"
453 %SDAPREF; "Address:&#RE;"
454 >
455
456 <!-- <ADDRESS> Address, signature, or byline -->
457
458
459 <!--======= Forms ====================-->
460
461 <![ %HTML.Forms [
462
463 <!ELEMENT FORM - - %body.content -(FORM) +(INPUT|SELECT|TEXTAREA)>
464 <!ATTLIST FORM
465 ACTION %URI #IMPLIED
466 METHOD (%HTTP-Method) GET
467 ENCTYPE %Content-Type; "application/x-www-form-urlencoded"
468 %SDAPREF; "<Para><?SDATrans Form: #AttList>Form:</Para>"
469 %SDASUFF; "<Para><?SDATrans Form: #End>Form End.</Para>"
470 >
471
472 <!-- <FORM> Fill-out or data-entry form -->
473 <!-- <FORM ACTION="..."> Address for completed form -->
474 <!-- <FORM METHOD=...> Method of submitting form -->
475 <!-- <FORM ENCTYPE="..."> Representation of form data -->
476
477 <!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX |
478 RADIO | SUBMIT | RESET |
479 IMAGE | HIDDEN )">
480 <!ELEMENT INPUT - O EMPTY>
481 <!ATTLIST INPUT
482 TYPE %InputType TEXT
483 NAME CDATA #IMPLIED
484 VALUE CDATA #IMPLIED
485 SRC %URI #IMPLIED
486 CHECKED (CHECKED) #IMPLIED
487 SIZE CDATA #IMPLIED
488 MAXLENGTH NUMBER #IMPLIED
489 ALIGN (top|middle|bottom) #IMPLIED
490 %SDAPREF; "<?SDATrans Input: #AttList>"
491 >
492
493 <!-- <INPUT> Form input datum -->
494 <!-- <INPUT TYPE=...> Type of input interaction -->
495 <!-- <INPUT NAME=...> Name of form datum -->
496 <!-- <INPUT VALUE="..."> Default/initial/selected value -->
497 <!-- <INPUT SRC="..."> Address of image -->
498 <!-- <INPUT CHECKED> Initial state is "on" -->
499 <!-- <INPUT SIZE=...> Field size hint -->
500 <!-- <INPUT MAXLENGTH=...> Data length maximum -->
501 <!-- <INPUT ALIGN=...> Image alignment -->
502
503 <!ELEMENT SELECT - - (OPTION+) -(INPUT|SELECT|TEXTAREA)>
504 <!ATTLIST SELECT
505 NAME CDATA #REQUIRED
506 SIZE NUMBER #IMPLIED
507 MULTIPLE (MULTIPLE) #IMPLIED
508 %SDAFORM; "List"
509 %SDAPREF;
510 "<?SDATrans Select:
511 #AttList><LHead>Select #AttVal(Multiple)</LHead>"
512 >
513
514 <!-- <SELECT> Selection of option(s) -->
515 <!-- <SELECT NAME=...> Name of form datum -->
516 <!-- <SELECT SIZE=...> Options displayed at a time -->
517 <!-- <SELECT MULTIPLE> Multiple selections allowed -->
518
519 <!ELEMENT OPTION - O (#PCDATA)*>
520 <!ATTLIST OPTION
521 SELECTED (SELECTED) #IMPLIED
522 VALUE CDATA #IMPLIED
523 %SDAFORM; "LItem"
524 %SDAPREF;
525 "<?SDATrans Option:
526 #AttList>#AttVal(Value) #AttVal(Selected)"
527 >
528
529 <!-- <OPTION> A selection option -->
530 <!-- <OPTION SELECTED> Initial state -->
531 <!-- <OPTION VALUE="..."> Form datum value for this option-->
532
533 <!ELEMENT TEXTAREA - - (#PCDATA)* -(INPUT|SELECT|TEXTAREA)>
534 <!ATTLIST TEXTAREA
535 NAME CDATA #REQUIRED
536 ROWS NUMBER #REQUIRED
537 COLS NUMBER #REQUIRED
538 %SDAFORM; "Para"
539 %SDAPREF; "<?SDATrans TextArea: #AttList>#AttVal(Name): "
540 >
541
542 <!-- <TEXTAREA> An area for text input -->
543 <!-- <TEXTAREA NAME=...> Name of form datum -->
544 <!-- <TEXTAREA ROWS=...> Height of area -->
545 <!-- <TEXTAREA COLS=...> Width of area -->
546
547 ]]>
548
549
550 <!--======= Document Head ======================-->
551
552 <![ %HTML.Recommended [
553 <!ENTITY % head.extra "META* & LINK*">
554 ]]>
555
556 <!ENTITY % head.extra "NEXTID? & META* & LINK*">
557
558 <!ENTITY % head.content "TITLE & ISINDEX? & BASE? &
559 (%head.extra)">
560
561 <!ELEMENT HEAD O O (%head.content)>
562 <!ATTLIST HEAD
563 %SDAPREF; "<?SDATrans Head: #AttList>"
564 >
565
566 <!-- <HEAD> Document head -->
567
568 <!ELEMENT TITLE - - (#PCDATA)*>
569 <!ATTLIST TITLE
570 %SDAFORM; "Ti"
571 >
572
573 <!-- <TITLE> Title of document -->
574
575 <!ELEMENT LINK - O EMPTY>
576 <!ATTLIST LINK
577 HREF %URI #REQUIRED
578 %linkExtraAttributes;
579 %SDAPREF; "<?SDATrans Link: #AttList>"
580 >
581
582 <!-- <LINK> Link from this document -->
583 <!-- <LINK HREF="..."> Address of link destination -->
584 <!-- <LINK URN="..."> Lasting name of destination -->
585 <!-- <LINK REL=...> Relationship to destination -->
586 <!-- <LINK REV=...> Relationship of destination to this -->
587 <!-- <LINK TITLE="..."> Title of destination (advisory) -->
588 <!-- <LINK METHODS="..."> Operations allowed (advisory) -->
589
590 <!ELEMENT ISINDEX - O EMPTY>
591 <!ATTLIST ISINDEX
592 %SDAPREF;
593 "<Para><?SDATrans
594 IsIndex: #AttList>[Document indexed/searchable.]</Para>">
595
596 <!-- <ISINDEX> Document is a searchable index -->
597
598 <!ELEMENT BASE - O EMPTY>
599 <!ATTLIST BASE
600 HREF %URI; #REQUIRED
601 %SDAPREF; "<?SDATrans Base: #AttList>"
602 >
603
604 <!-- <BASE> Base context document -->
605 <!-- <BASE HREF="..."> Address for this document -->
606
607 <!ELEMENT NEXTID - O EMPTY>
608 <!ATTLIST NEXTID
609 N %linkName #REQUIRED
610 %SDAPREF; "<?SDATrans NextID: #AttList>"
611 >
612
613 <!-- <NEXTID> Next ID to use for link name -->
614 <!-- <NEXTID N=...> Next ID to use for link name -->
615
616 <!ELEMENT META - O EMPTY>
617 <!ATTLIST META
618 HTTP-EQUIV NAME #IMPLIED
619 NAME NAME #IMPLIED
620 CONTENT CDATA #REQUIRED
621 %SDAPREF; "<?SDATrans Meta: #AttList>"
622 >
623
624 <!-- <META> Generic Metainformation -->
625 <!-- <META HTTP-EQUIV=...> HTTP response header name -->
626 <!-- <META HTTP-EQUIV=...> Metainformation name -->
627 <!-- <META CONTENT="..."> Associated information -->
628
629 <!--======= Document Structure =================-->
630
631 <![ %HTML.Deprecated [
632 <!ENTITY % html.content "HEAD, BODY, PLAINTEXT?">
633 ]]>
634 <!ENTITY % html.content "HEAD, BODY">
635
636 <!ELEMENT HTML O O (%html.content)>
637 <!ENTITY % version.attr "VERSION CDATA #FIXED '%HTML.Version;'">
638
639 <!ATTLIST HTML
640 %version.attr;
641 %SDAFORM; "Book"
642 %SDAPREF; "<?SDATrans HTML: #AttList>"
643 >
644
645 <!-- <HTML> HTML Document -->

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