HTML-PRETTY(1) General Commands Manual HTML-PRETTY(1) NAME html-pretty - prettyprint HTML and SGML files SYNOPSIS html-pretty [ -? ] [ -author ] [ -blank-line-warning ] [ -brief ] [ -catalogfile filename ] [ -check-tag-nesting ] [ -comment-banner ] [ -convert-paragraph-breaks ] [ -copyright ] [ -email-address user@hostname ] [ -extend-style 'style: TAG TAG ...' ] [ -extend-style 'TAG: TAG TAG ...' ] [ -file filename ] [ -grammar-level grammar ] [ -help ] [ -indent nnn ] [ -keep-format ] [ -logfile filename ] [ -no-blank-line-warning ] [ -no-brief ] [ -no-check-tag-nesting ] [ -no-comment-banner ] [ -no-convert-paragraph-breaks ] [ -no-keep-format ] [ -no-print-stylefile ] [ -no-quiet ] [ -no-read-stylefiles ] [ -no-trace-opens ] [ -no-unknown-tag-warning ] [ -no-warnings-in-comments ] [ -outfile filename ] [ -personal-name name ] [ -print-stylefile ] [ -quiet ] [ -read-stylefiles ] [ -stylefile filename ] [ -trace-opens ] [ -unknown-tag-warning ] [ -version ] [ -warnings-in-comments ] [ -width nnn ] [ < infile or file(s) ] [ > outfile ] DESCRIPTION html-pretty filters its HTML or SGML input from stdin, or from one or more named files given on the command line, and prettyprints it to stdout, stan- dardizing the spacing, and providing indentation to expose the document structure. When its input is just a plain text file in the ASCII or ISO 8859-1 charac- ter sets, a major part of the conversion of text to grammatically-correct HTML can be done automatically, especially if the -convert-paragraph-breaks option is used. Section headings, verbatim, and tabular material will, however, require manual editing. HTML (HyperText Markup Language) is the language used to specify formatting instructions in text files intended for viewing with World-Wide Web (WWW) client programs (browsers), such as amaya(1), arena(1), chimera(1), grail(1), hotjava(1), jde(1), lynx(1), netscape(1), panorama(1), and xmo- saic(1). The WWW idea began in late 1992, and because viewer programs support dis- play of text, line drawings, color raster images, hypertext links, and uni- form access to several Internet services, including file transfer, in the first two years, the number of WWW servers grew from zero to several hun- dred thousand, and some of the more popular sites receive up to twenty-five million accesses a day from all over the Internet. Consequently, many In- ternet computer users are beginning to write HTML documents for their own home pages, and html-pretty is written for them. The goal of a prettyprinter is to recognize all legal inputs, and produce output that is indented to reflect the structure, and in which line lengths have been restricted for improved readability. Irregularities in coding practice, and outright errors, are more likely to be detected in the pret- typrinted output, than in the input. SGML (Standard General Markup Language, ISO 8879), and its particular docu- ment type definition instance, HTML, follow a rigorous grammar for text markup that makes it possible to clearly identify document parts, such as headings, sections, subsections, paragraphs, figures, tables, equations, and so on, and files with such standardized markup are particularly good candidates for prettyprinting. The definition of HTML is still evolving. Version 2.0 (Fall 1994) is im- plemented by almost all browsers. Version 3.0, informally called HTML Plus, was introduced in March, 1995, and the arena(1) browser was developed at the World-Wide Web Consortium, W3C, to serve as a testbed for it. Although Version 3.0 is a superset of version 2.0, it proved too difficult for browser implementors to incorporate support for it in a reasonable time, and it was withdrawn in Fall, 1996. Version 3.2 was released on 14 January 1997, but despite its higher version number, it lacks many of the new features introduced in version 3.0, notably for mathematical markup, but importantly, it does include support for figures and tables. As with version 3.0, there is also a testbed browser, this time called amaya(1), and augmented with the ability to edit HTML files, providing a (simple- minded) WYSIWYG editor interface that some users may find convenient for creating and maintaining HTML files. At the time of writing in Fall, 1997, only the amaya(1) and netscape(1) browsers appear to have implemented all, or most, of HTML 3.2. Further information about HTML versions 3.0 and 3.2 can be found on the World-Wide Web at the Uniform Resource Locators (URLs) http://www.w3.org/MarkUp/Wilbur/ http://www.w3.org/TR/REC-html32.html The next version of HTML, code-named Cougar, is under development, and will become version 4.0 when it is finally released. The first draft public re- lease was on 8 July 1997, and a second proposed recommendation followed on 7 November 1997. For details, visit URLs http://www.w3.org/MarkUp/Cougar/ http://www.w3.org/TR/WD-html40/ http://www.w3.org/TR/PR-html40/ Interestingly, translations of the version 4.0 specification to at least 18 other human languages are in progress: see URLs http://www.w3.org/TR/WD-html40/translations.html http://www.w3.org/TR/PR-html40-971107/translations.html html-pretty recognizes all HTML tags in the grammars of versions 1.0, 2.0, 3.0, 3.2, and proposed 4.0, plus a few vendor-specific extensions. One significant difference between the grammar versions is that the HTML tag <P> is a paragraph separator in version 2.0, while it is a paragraph begin in later versions, and consequently expects to have a matching </P> paragraph end tag that is not required in 2.0. html-pretty will supply missing </P> tags, and delete empty <P> ... </P> environments. Since HTML translators ignore unknown tags, this is transparent to HTML version 2.0 implementations, and causes no problems. html-pretty expects that its input is reasonably well-formed. Usually it is sufficient that the file can be displayed by one or more WWW browsers, pro- ducing the expected form. However, it would be unwise to write a large amount of program code without a compiler to check it, and it is similarly unwise to write documentation in HTML or SGML without at least a validating parser to ensure that the text is syntactically correct. Fortunately, at least two such programs are publicly available (thanks to the generosity of their author, James Clark), nsgmls(1) and sgmls(1), to- gether with UNIX shell scripts, html-check(1) and html-ncheck(1), to facil- itate their use with HTML files. In addition, the nsgmls(1) distribution is accompanied by two SGML tag normalizers, sgmlnorm(1) and spam(1), and there is a UNIX shell script, html-spam(1), for one of them. You may therefore find it useful to apply html-spam(1), and either html-check(1) or html-ncheck(1), to your HTML files, and fix all of the errors that they de- tect, before filtering the files with html-pretty. HTML strictly requires a certain amount of boiler-plate to be wrapped around the text, and there is ample evidence that most HTML files omit these wrappers, because WWW browsers are written to be tolerant of grammat- ical deviations. html-pretty will supply the wrappers if they are omitted; indeed, if given an empty input file, html-pretty produces output similar to this: <!-- -*-html-*- --> <!-- Prettyprinted by html-pretty flex version 1.00 [11-Nov-1997] --> <!-- on Tue Nov 11 16:23:39 1997 --> <!-- for Nelson H. F. Beebe (beebe@plot79.math.utah.edu) --> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <HTML> <HEAD> <TITLE> <!-- Please supply a descriptive title here --> </TITLE> <!-- Please supply a correct e-mail address here --> <LINK REV="made" HREF="mailto:beebe@plot79.math.utah.edu"> </HEAD> <BODY> </BODY> </HTML> This example, minus the comments <!-- ... -->, shows the minimal markup that should be expected in an HTML file, although the grammar permits the HTML, HEAD and BODY environments to be implicitly assumed if they are omit- ted. While most WWW browsers ignore the DOCTYPE declaration, it is essen- tial for SGML parsers, since it identifies the grammar rules that apply to what follows. Two recent WWW browsers, amaya(1) and panorama(1), are SGML- grammar based, and may require a valid DOCTYPE declaration. OPTIONS Command-line options affect all following filenames. Option values are al- ways provided as separate arguments following the option name. Letter case in option names is not significant, although it may be in option values. Option names may be abbreviated to any unique leading prefix, unless a shorter prefix is documented. Any argument that begins with a hyphen is expected to be an option, and will raise an error if it is not recognized. If a filename begins with a hyphen, you therefore need to disguise it by supplying a leading directory path. For example, ./-foo represents the file named -foo in the current directory in UNIX. GNU- and POSIX-style options of the form --name are also recognized: they begin with two option prefix characters. For every option -xxx that sets a Boolean flag to be acted upon later, there is a corresponding -no-xxx option to override it. The negative forms are normally not required, but are necessary to counteract options set in a style file. -author Show author information on stderr and quit after process- ing any remaining command-line options that precede the next command-line HTML file. -blank-line-warning Unlike most word processing and typesetting systems, and ordinary typewritten text, in HTML and SGML, blank lines do not imply a paragraph break, except in verbatim envi- ronments. You can select this option to get warnings about such blank lines. They will be reduced to a single blank line, leaving space for later manual insertion of a <P> tag, if that was indeed what was intended [default: -no-blank-line-warning]. If you specify the -convert-paragraph-breaks option, then this option will have no effect. -brief Brief mode: exclude the standard boiler-plate wrapper of !DOCTYPE, HTML, HEAD, and BODY tags [default: -no-brief]. This option, in conjunction with -no-comment-banner, is convenient for prettyprinting small fragments of text, such as from inside a text editor. It can also be used for portions of larger documents (e.g., chapters of a book) that are not in themselves complete HTML files. This option can be abbreviated to -b. -catalogfile filename Specify an alternate catalog file to override the default one. See the CATALOG DIRECTORY section for more details. This option can be abbreviated to -c. -check-tag-nesting Use built-in tables, or tables from style files, of tag- is-contained-in and tag-cannot-contain relations to check that tags are properly nested. The rules that govern this are very complex, and depend on the grammar level chosen. The precise relations are tabulated in the HTML GRAMMAR CONSTRAINTS section, and the way they are provided to html-pretty is described in the STYLE FILES section. Because this option can lead to a large number of warning messages when optional end tags are omitted, the default is -no-check-tag-nesting. Nevertheless, when a proper SGML parser, such as html- check(1) or html-ncheck(1), is not available, this option can be very helpful in diagnosing errors of tag usage. -comment-banner Generate a leading comment banner containing the pret- typrinter version number and date, the current date and time, and the personal name and email address of the user who ran the prettyprinter [default: -comment-banner]. -convert-paragraph-breaks Convert paragraph breaks (sequences of one or more blank or empty lines) to HTML <P> tags [default: -no-convert- paragraph-breaks]. This option is intended for converting text files to HTML; it should not be used when the input file is already HTML, unless the intent really is to insert explicit paragraph tags. This option has no effect on blank lines inside verbatim environments. -copyright -copyleft Show copyright information on stderr and quit after pro- cessing any remaining command-line options that precede the next command-line HTML file. -email-address user@hostname Supply an alternate electronic mail address to be used in the comment banner and the LINK tag. Otherwise, a default address is constructed from the current user name and host name, when that information is available from the operat- ing system. This option may also be spelled -e-mail-address, since both e-mail and email are about equally common abbrevia- tions on the World-Wide Web. -extend-style 'style: TAG TAG ...' -extend-style 'TAG: TAG TAG ...' These options, whose name can be abbreviated to just -e, provide a quick command-line alternative to the style file feature of the -stylefile option. They permit you to aug- ment the list of tags associated with a particular format- ting style class, or to add a list of tags to the same class as an existing tag (to avoid the need to know the style class names), but only for the duration of the cur- rent process. Since a tag can belong to only a single style class at one time, specification of existing tags with these options effectively removes their old style class association. html-pretty distinguishes between the two cases by looking up the first name in its tag table. If it is entirely in uppercase, then it might be found there. Otherwise, it is a style class name. If the style class is not recognized, an error message is issued with a list of the recognized class names, and exe- cution is terminated after processing any remaining com- mand-line options that precede the next command-line HTML file. Thus, an option -extend-style foo:bar' or -extend- style help=me' with obviously incorrect class and tag names can be used to coax a list of the valid ones from html-pretty; it will respond with something like this: :1:unknown style [foo] command [BAR] at line 0 in style source [command-line] The recognized style classes are: body doctype font head html line-break link list list-header list-item markup-declaration math math-pair pair paragraph plaintext public section short standalone standalone-nocheck title verbatim The output line width in this list is governed by the -width option. You can assign tags to the special style class name de- fault to make them unknown (and also, warned about, if you supply the -unknown-tag-warning option), e.g., de- fault:blink. Because some operating systems do not allow embedded spaces in command-line arguments, you can separate the tags in the value string with a comma instead of white- space. Also, you can use an equals sign instead of a colon after the first word. For example, the value strings font:A,MEDIUM font=A,MEDIUM 'font = A MEDIUM' 'font : A,,,,MEDIUM' all assign tags A and MEDIUM to the font style class. In- cidentally, some people prefer A (anchor) tag pairs to be treated this way, rather than their default of being placed on separate lines, even though long hypertext ref- erences in <A HREF="..."> make this style hard to read. For more information on this topic, see the STYLE FILES section below. -file filename Supply an alternate input filename for use in the output comment banner. This overrides the actual filename(s), and provides a way to name the output, even when no named input file is available, because standard input is redi- rected, or comes from a pipe. -grammar-level grammar Select a grammar level that in turn will select a suitable style file. See the CATALOG DIRECTORY and STYLE FILES sections for more details. Lettercase is not significant in grammar-level names. You can use this option, together with the -unknown-tag- warning option, to help detect use of HTML tags that are not part of the grammar. However, a better, and grammati- cally rigorous, way to do this is to use a validating SGML parser, such as those accessible via the html-check(1) and html-ncheck(1) scripts. The built-in default grammar level is a union of the HTML grammar levels 1.0, 2.0, 3.0, 3.2, and proposed 4.0, plus selected browser-vendor extensions. A properly-installed html-pretty always supports at least grammar levels 1.0, 2.0, 3.0, 3.2, 4.0, plus one named all which contains a union of all of the grammar styles in the catalog directory. This will be similar to the built-in default style, but may differ from it in minor details, since it is easier to augment the style file than it is to rebuild and reinstall the software. There is also a `grammar level' named dtd; it augments the normal style rules with additional ones for extra declara- tions and tags found in SGML and HTML Document Type Defin- ition (DTD) files. If you specify an incorrect grammar level, html-pretty will display a message showing the available levels, and then quit: html-pretty -g foo :1:could not find grammar level [foo] in catalog file [/usr/local/share/lib/html-pretty/catalog]: levels available: all dtd 2 2.0 3 3.0 3.2 4 4.0 If the style file has a public style class entry, the out- put DOCTYPE declaration will use its value, instead of a built-in default; see the STYLE FILES section below for details. Tip: if you want to find out the differences in the sets of HTML tags accepted by two different grammar versions, use this option with the -print-stylefile and -width op- tions like this: html-pretty -w 0 -g 3.2 -p >foo.3.2 html-pretty -w 0 -g 4.0 -p >foo.4.0 diff foo.3.2 foo.4.0 The difference listing will show just those style classes where the tag lists differ, since each class will be com- plete on one (possibly long) line. -help or -? Display brief usage information on stderr and quit after processing any remaining command-line options that precede the next command-line HTML file. -indent nnn Set the number of spaces for each indentation level [de- fault: 4]. -keep-format Treat the input stream as verbatim text whose visual for- mat is to be exactly preserved. It will be converted to the body of a preformatted HTML environment, <PRE> ... </PRE>, and all characters will be output unchanged, ex- cept for the four characters `<', `>', `&', and `"', which will be translated to SGML entities `<', `>', `&', and either `"' or `&34;' (depending on the grammar level), respectively. This option is useful for converting non-HTML text to HTML when the linebreaking and indentation are already decided, such as preformatted tables, samples of computer program input and output, and programming language fragments. Horizontal tab characters are treated like spaces in HTML, but most Web browsers will display text containing tabs as if each tab caused blank fill up to, and including, the next column which is a multiple of eight, which is the conventional behavior on many systems. The visual appear- ance is correct if the text is displayed with a fixed- width font, but is usually wrong with a proportionally- spaced font. However, when asked to save the file as plain text, some browsers will save text with tabs, and others will save text with tabs expanded to spaces, thereby preserving the original appearance. When the same text is cut with the mouse and pasted into another window, some browsers pre- serve tabs, and others convert it to spaces. And even more confusingly, a browser that converts tabs to spaces in a saved file may leave tabs intact in cut-and-pasted text! In most cases, tabs are not significant, but they are for UNIX Makefiles, so if your text has significant tabs, you should incorporate a warning that they will likely be de- stroyed by the Web browser, and will need to be restored manually, or with a pass through a filter such as unex- pand(1). html-pretty always treats tabs as ordinary characters, but if you want to be sure of correct display of tabs accord- ing to the conventional blank-fill rule, you should filter the input to html-pretty using a tab expander such as ex- pand(1). For Fortran code containing tab characters, the meaning of tabs is context sensitive, and you need to use a Fortran- tab aware converter. There is no standard UNIX utility to do this, although a local emacs(1) editor function M-x detab-fortran will do the job. -logfile filename Redirect warning and error messages from stderr to the in- dicated filename. This option is provided for user conve- nience on poorly-designed operating systems (e.g., IBM PC DOS) that fail to provide for redirection of stderr to a specified file. This option can also be used for discarding messages, with, e.g., on UNIX systems, -logfile /dev/null. If the file cannot be opened for output, html-pretty will terminate silently with a non-zero exit code, because the internal attempted redirection required the closure of stderr, making it unavailable for printing further error messages. -no-blank-line-warning Override an earlier -blank-line-warning option. Unlike most word processing and typesetting systems, and ordinary typewritten text, in HTML and SGML, blank lines do not im- ply a paragraph break, except in verbatim environments. html-pretty will therefore normally silently reduce such blank lines to a single space [default: -no-blank-line- warning]. If you specify the -convert-paragraph-breaks option, then this option will have no effect. -no-brief Override an earlier -brief option, so that the standard wrapper !DOCTYPE, HTML, HEAD, and BODY tags are generated [default: -no-brief]. -no-check-tag-nesting Suppress checks for correct tag nesting [default: -no- check-tag-nesting]. -no-comment-banner Suppress generation of the default leading comment banner. This option can be abbreviated to -n, since it may be used frequently [default: -comment-banner]. -no-convert-paragraph-breaks Do not convert paragraph breaks (sequences of one or more blank or empty lines) to HTML <P> tags [default: -no-con- vert-paragraph-breaks]. Instead, unless the -blank-line- warning option has been given, the empty lines will be re- duced to a single space. -no-keep-format Override an earlier -keep-format option, and thus permit reformatting of the input stream [default: -no-keep-format ]. -no-print-stylefile Override an earlier -print-stylefile option, and there- fore, do not terminate execution before processing style files [default: -no-print-stylefile]. -no-quiet Override an earlier -quiet option, to restore output of warning messages on stderr [default: -no-quiet]. -no-read-stylefiles Suppress reading of the three default style files (see the STYLE FILES section below) [default: -read-stylefiles]. Style files implicitly specified with -grammar-level op- tions, or explicitly specified with -stylefile options, will still be processed. -no-trace-opens Override an earlier -trace-opens option, so that file opening attempts are not traced on stderr [default: -no- trace-opens]. -no-unknown-tag-warning Override an earlier -unknown-tag-warning option, so that unknown HTML tags will not elicit a warning message [de- fault: -no-unknown-tag-warning]. -no-warnings-in-comments Override an earlier -warnings-in-comments option, so that warning and error messages are written only to stderr (which might have been redirected with the -logfile op- tion) [default: -no-warnings-in-comments]. -outfile filename Redirect output from stdout to the indicated filename. This option is provided for user convenience on operating systems that fail to provide for redirection of stdout to a specified file. -personal-name name Supply an alternate personal name string to be used in the comment banner. Normally, the personal name is determined via the current user name, when that information is avail- able from the operating system. -print-stylefile Print a style file on stdout and quit after processing any remaining command-line options that precede the next com- mand-line HTML file. This option can be abbreviated to -p. The output line width in the style file is governed by the -width option described later. Startup option files, and any preceding -extend-style, -grammar-level, and -stylefile options will already have been processed, and their changes will be reflected in the output produced by this option. Use this option to find out how each recognized tag is processed, and also to get a template style file that you can customize. The style class names and tag lists are ordered alphabetically for improved readability. For more details, see the STYLE FILES section below. -quiet Suppress output of warning messages on stderr. Error mes- sages will, however, not be suppressed. If you really want to discard error messages too, then use the -logfile /dev/null option instead. -read-stylefiles Override an earlier -no-read-stylefiles option, so that the three standard style files (see the STYLE FILES sec- tion below) are read [default: -read-stylefiles]. -stylefile filename Name a style file (see the STYLE FILES section below) to augment html-pretty's built-in knowledge of HTML tags. This option may be given more than once, if multiple ini- tialization files are needed. -trace-opens Trace all file-opening attempts, with a one-line message on stderr for each [default: -no-trace-opens]. This option can be helpful in analyzing file access fail- ures, and in uncovering the location of default style files and the catalog directory. -unknown-tag-warning Unknown HTML tags are always treated as ordinary text, but with this option, you can request that a warning be raised for each of them [default: -no-unknown-tag-warning]. While this option is not a substitute for a validating HTML parser, such as html-check(1) or html-ncheck(1), it does provide a simple way to catch use of non-standard tags. See the -extend-style option for a way to catch specific tags. -version Show version information on stderr and quit after process- ing any remaining command-line options that precede the next command-line HTML file. -warnings-in-comments Write warning and error messages as easily-identifiable single-line HTML comments on stdout [default: -no-warn- ings-in-comments]. This may facilitate correction of problems in the output file, since the messages can be lo- cated by context, rather than by line number in the input file. Messages are always written to stderr as well (which might have been redirected with the -logfile option, or sup- pressed with the -quiet option). -width nnn Set the maximum output line width [default: 72]. This limit may be exceeded if an excessively long string with- out embedded spaces is encountered, and it is ignored com- pletely inside preformatted or verbatim text. If you set the line width to 0, it will be treated as `in- finite' (i.e., the largest representable integer). If you set it to a very small value, e.g., 1, then the output will have one word per line, which might actually be use- ful on occasion! This option can be abbreviated to -w. FORMATTING CONVENTIONS html-pretty groups HTML tags into collections of style classes. Tags within a single style class receive similar formatting. The built-in style-class tag-membership lists recognize a large collection of tags from multiple grammar levels, and multiple browser vendor extensions, but all of the built-in lists can be modified by the user, as described in the -ex- tend-style and -stylefile options above, and the STYLE FILES section below. The subsections which follow catalog the origins of the recognized tags, and then describe the available style classes in alphabetical order, list- ing their default tag members, and briefly sketching how the tags are for- matted. Tags that are not explicitly named in these subsections, or in style files that are read at run time, are treated as normal text, and have no effect on the indentation or line breaking, other than their contribution toward the line length limit. Tags in the style classes doctype, line-break, math, plaintext, short, standalone, and standalone-nocheck make up the set of HTML tags with SGML content EMPTY, which means that end tags for them are forbidden. html- pretty will issue warnings about such end tags, but will leave their dele- tion to a human. Recognized HTML Tags HTML 2.0 contains the following 49 tags: A, ADDRESS, B, BASE, BLOCKQUOTE, BODY, BR, CITE, CODE, DD, DIR, DL, DT, EM, FORM, H1, H2, H3, H4, H5, H6, HEAD, HR, HTML, I, IMG, INPUT, ISINDEX, KBD, LI, LINK, LISTING, MENU, META, NEXTID, OL, OPTION, P, PLAINTEXT, PRE, SAMP, SELECT, STRONG, TEXTAREA, TI- TLE, TT, UL, VAR, and XMP. HTML 3.0 augments the 2.0 grammar with 53 additional tags: ABBREV, ABOVE, ACRONYM, ARRAY, ATOP, AU, BAR, BELOW, BIG, BOX, BQ, BT, CAPTION, CHOOSE, CREDIT, DDOT, DEL, DFN, DIV, DOT, FIG, HAT, INS, ITEM, LANG, LEFT, LH, MATH, NOTE, OF, OVER, OVERLAY, PERSON, PRE, Q, RIGHT, ROOT, ROW, S, SMALL, SQRT, STYLE, SUB, SUP, T, TAB, TABLE, TD, TH, TILDE, TR, U, and VEC. These tags are identified by their occurrence in the html.dtd and html-3.dtd document type definition files in lines like these: <!ENTITY % font " TT | B | I "> <!ENTITY % phrase "EM | STRONG | CODE | SAMP | KBD | VAR | CITE "> <!ELEMENT (%font;|%phrase) - - (%text)+> <!ELEMENT XMP - - %literal> ENTITY declarations define text string substitutions, and ELEMENT declara- tions define the tags recognized by the grammar. HTML 3.2 introduced these 21 new tags: APPLET, AREA, BASEFONT, BIG, CAP- TION, CENTER, DFN, DIV, FILE, FONT, MAP, NUMBER, PARAM, SCRIPT, SMALL, STRIKE, STYLE, SUB, SUP, TABLE, and U. Proposed HTML 4.0 introduces these 15 new tags: BDO, BUTTON, COL, COLGROUP, FIELDSET, FRAMESET, IFRAME, LABEL, NOFRAMES, NOSCRIPT, OBJECT, SPAN, TBODY, TFOOT, and THEAD. HTML Tag Omission The HTML grammar permits certain end tags to be omitted, when their implied position can be determined from the grammatical context. In HTML 3.0, this includes the following tags: DD, DT, ITEM, LH, LI, OF, OPTION, P, ROW, STYLE, and TR. The HTML 3.2 grammar permits these end tags to be omitted: DD, DT, INPUT, LI, OPTION, and P. The HTML proposed 4.0 grammars permit these end tags to be omitted: COL- GROUP, DD, DT, LI, OPTION, P, PARAM, TFOOT, THEAD, and TR. In all grammar versions, these tags never have end tags: AREA, BASE, BR, FRAME, HR, IMG, INPUT, ISINDEX, LINK, META, NEXTID, PARAM, and PLAINTEXT. In version 3.0, BASEFONT takes an optional end tag, but in succeeding ver- sions, it must not have an end tag. In version 3.0, STYLE takes an optional end tag, but in succeeding ver- sions, it must have an end tag. Supporting the tag-omission feature requires the ability to parse a com- plete SGML grammar, which requires a great deal more code than html-pretty provides. Consequently, html-pretty does not support optional end tags; based on typical usage, they are expected to be always present, or always absent, according to the rules given below. Omitted end tags can be auto- matically supplied by an SGML tag normalizer, such as sgmlnorm(1), spam(1), or html-spam(1). html-pretty will warn about end tags that should not be present, based on the tags' membership in those style classes that are known not to have end tags. However, it will not delete them from the output stream, because hu- man judgment may be called for. See the HTML GRAMMAR CONSTRAINTS section below for further details. Style Class: body The following HTML tag name must occur only once, with a begin/end pair, often with substantial amounts of intervening text: BODY. The begin/end tags are prettyprinted on separate lines, with their enclosed text indented one level. However, the BODY environment must occur after the HEAD envi- ronment, and one level inside the HTML environment. html-pretty will sup- ply this environment if needed, unless the -brief option has suppressed it. Style Class: comment Short HTML comments are output inline, like normal text. Long ones, and ones with embedded angle brackets, are prettyprinted on separate lines. Their internal form is preserved exactly, without any line wrapping, since they will often contain specially-formatted material. Any whitespace be- tween the final "--" and the closing angle bracket will be eliminated, when possible. Style Class: doctype The following HTML tag name occurs only once, and should normally be the first non-comment tag in a file: !DOCTYPE. html-pretty will supply this tag if needed, unless the -brief option has suppressed it. Strictly, this is not a tag, but rather a markup declaration, but html-pretty treats it as a special tag, and outputs it verbatim while checking for proper embedded comment balance. For more details, see the COMMENTS IN HTML AND SGML sec- tion below. Style Class: font These HTML tag names occur in begin/end pairs, usually with smaller amounts of enclosed material. They appear inline in the running text, and do not alter indentation: ACRONYM, B, BIG, BLINK, BT, CODE, DFN, EM, I, KBD, Q, REV, S, SAMP, SMALL, STRIKE, STRONG, T, TT, U, and VAR. Style Class: head This HTML tag occurs in begin/end pairs, which are prettyprinted on sepa- rate lines with enclosing text indented one level: HEAD. However, this tag pair must occur only once in a file, and then only inside an HTML environ- ment, and before the BODY environment. html-pretty will supply this envi- ronment if needed, unless the -brief option has suppressed it. Style Class: html This HTML tag occurs in begin/end pairs, which are prettyprinted on sepa- rate lines with enclosing text indented one level: HTML. However, this tag pair must occur only once in a file, and then only at the outermost level. html-pretty will supply this environment if needed, unless the -brief op- tion has suppressed it. Style Class: inline Tags in this class are treated as ordinary text, with no additional spacing requirements, or checks for enclosing environments. Neither the default built-in style, nor any of the standard grammar-level- specific style files, use this class. It is provided to permit transparent handling of tags that may be added in future versions of the HTML grammars. There is a difference in the handling of a member of this class, compared to that for a tag which is not defined in any class. The latter may result in warnings if the -unknown-tag-warning option has been selected, is al- lowed only in the BODY environment, and may cause a paragraph to end. A tag in the inline style class may occur in either the HEAD or BODY environ- ments, never raises unknown-tag warnings, and does not end a paragraph. Style Class: line-break This HTML tag marks an explicit line break, and has no matching end tag; preceding space is deleted, and a newline follows: BR. Style Class: link This HTML tag has no matching end tag; it appears alone on a separate line: LINK. There is normally at least one LINK tag, in the HEAD environment, and html-pretty will supply one automatically if none is present in the in- put stream. Style Class: list These HTML tags names occur in begin/end pairs, and delimit lists. They appear on separate lines, with their enclosed text indented two levels: DIR, DL, MENU, OL, and UL. Style Class: list-header This HTML tag marks the title of a list: LH. The begin/end tags are output on separate lines, indented one level from the enclosing list. Style Class: list-item These HTML tags mark the beginning of list items, and have matching end tags which are supplied if they are absent. They are output on separate lines, indented one level from the enclosing list: DD, DT, and LI. Style Class: markup-declaration The following SGML markup declarations are also treated like special tags, and output verbatim while checking for proper embedded comment balance: !ATTLIST, !ELEMENT, !ENTITY, !NOTATION, !SGML, !SHORTREF, and !USEMAP. However, html-pretty does no further checking about where these `tags' are legal. Generally, they do not occur in HTML files, but are found mainly in DTD files. Style Class: math These HTML tag names occur only inside a MATH environment, and appear in- line, without end tags, and without affecting indentation: ATOP, CHOOSE, LEFT, OF, OVER, RIGHT, and TAB. Style Class: math-pair These HTML tag names occur only inside a MATH environment, with begin/end pairs, and appear inline, without affecting indentation: ABOVE, BAR, BELOW, BOX, DDOT, DOT, HAT, ROOT, ROW, SQRT, SUB, SUP, TILDE, and VEC. Style Class: pair The following HTML tag names occur in begin/end pairs (<TAG>and</TAG>), of- ten with substantial amounts of intervening text: A, ABBREV, ABSTRACT, ADDED, ADDRESS, APPLET, ARG, AROW, ARRAY, AU, BDO, BLOCKQUOTE, BQ, BUTTON, CAPTION, CENTER, CITE, CMD, COLGROUP, CREDIT, DEL, DIV, DIV1, DIV2, DIV3, DIV4, DIV5, DIV6, FIELDSET, FIG, FN, FONT, FOOTNOTE, FORM, FRAMESET, HIDE, IFRAME, INS, LABEL, LANG, MAP, MARGIN, MATH, MESSAGE, NOFRAMES, NOSCRIPT, NOTE, OBJECT, OPTION, PERSON, QUOTE, REMOVED, SELECT, SPAN, STYLE, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, and TR. They are prettyprinted on separate lines, with their enclosed text indented one level. Style Class: paragraph This HTML tag occurs in begin/end pairs, which are prettyprinted on sepa- rate lines with enclosing text indented one level: P. However, paragraph- ing is tracked, empty paragraphs are discarded, and when new tags are en- countered which are known to be illegal inside a paragraph, any open para- graph is automatically closed. Thus, old-style HTML files with omitted </P> tags will usually get them added. Unlike most word processors and many typesetting systems, blank lines in the SGML and HTML input stream do not imply a paragraph break; only the <P> tag does. Style Class: plaintext The HTML tag PLAINTEXT marks the beginning of verbatim text that continues to end-of-file; it appears on a separate line. Although some HTML viewers will terminate the plaintext environment on reaching a matching end tag, </PLAINTEXT>, that practice is now considered erroneous. html-pretty will warn about this abberant environment, and recommend using <PRE> ... </PRE> instead. Style Class: section These HTML tags occur in begin/end pairs, which are prettyprinted on sepa- rate lines with enclosing text indented one level: H1, H2, H3, H4, H5, and H6. However, they must be logically ordered: H1 before H2 ... before H6, with no intermediate header levels omitted, and they must appear at the first level inside the BODY environment. Style Class: short This HTML tag has no matching end tag; it appears alone on a separate line: ITEM. However, tags in this class can be used only inside a BODY environ- ment, and consequently, html-pretty will automatically end any open HEAD environment, and start a BODY environment, if needed. Style Class: standalone These HTML tags have no matching end tag; they appear alone on separate lines: CHANGED, HR, IMG, INPUT, RENDER, STYLES, and WBR. However, they may appear only inside the BODY environment, and outside a paragraph, and con- sequently, html-pretty will automatically end any open HEAD and P environ- ments, and start a BODY environment, if needed. Style Class: standalone-nocheck These HTML tags have no matching end tag; they may appear in either the HEAD or the BODY environment, and they appear alone on separate lines: BASE, ISINDEX, META, and NEXTID. As the class name implies, they are not checked against rules that might restrict their placement with respect to other environments. Style Class: title This HTML tag occurs in begin/end pairs, which are prettyprinted on sepa- rate lines with enclosing text indented one level: TITLE. However, this tag pair is restricted to occurring only in the HEAD environment, and should normally only be given once. html-pretty will supply this environ- ment if needed, unless the -brief option has suppressed it, and will warn about multiple occurrences. Style Class: verbatim These HTML tags appear in begin/end pairs, delimit preformatted, or verba- tim, text, and may occur only in the BODY environment: LISTING, NOBR, PRE, and XMP. The beginning and ending tags are output on separate lines, with no indentation, and with the enclosed material copied exactly as it ap- peared in the input stream. Style Class: verbatim-nocheck These HTML tags appear in begin/end pairs, delimit preformatted, or verba- tim, text, and may occur in either HEAD or BODY environments: SCRIPT and STYLE. The beginning and ending tags are output on separate lines, with no indentation, and with the enclosed material copied exactly as it appeared in the input stream. The SCRIPT and STYLE environments are not strictly verbatim environments, but since they contain material in one of several different scripting (Java, JavaScript, Tcl, VBScript, ...) or style-sheet (CSS, ...) lan- guages, there is no reasonable way for html-pretty to reformat their con- tents, so they are included in this style class to prevent such reformat- ting. STYLE FILES In order to allow the user to control the formatting of particular HTML tags, html-pretty supports a powerful style file mechanism. At startup, it processes a style file in the directory where the executable program was found, a second style file in the user's home directory, and a third style file in the current directory. None of these need exist. Next, during command-line argument processing, additional style files can be provided with the -stylefile option. These style files support system-specific, user-specific, directory-specific, and job- or file-specific prettyprinting control. The default name of the first three style files is system dependent: .html- prettyrc (UNIX), htmlpty.ini (IBM PC DOS), and html-pretty.ini (DEC VMS and OpenVMS). The exact names depend on the name of the executable program, which is used to construct the style file names. If you renamed it to sgmlpretty.exe, the names would be .sgmlprettyrc on UNIX, and sgml- pretty.ini on other systems. More precisely, the program name passed to the prettyprinter as its zeroth argument is filtered by discarding any trailing version number and exten- sion, then keeping the last consecutive string of characters that are let- ters, digits, hyphens, or underscores. If the zeroth argument is empty, implying that the program name is unknown, then the name htmlpty is used; it is short enough to be acceptable to any reasonable file system. Automatic association of the style file names with the program name makes it easy to support multiple versions, e.g., html-pretty-2-0, html- pretty-3-0, html-pretty-3-2, and html-pretty-4-0 could select different HTML grammar versions, and on UNIX, and a few other operating systems, those programs could all be links to the same physical file, avoiding wasteful duplication of disk space. In the current implementation of html-pretty, all of the standard HTML tags defined in HTML grammar levels up to the proposed 4.0, plus a few browser vendor extensions, are hard-coded into the program as members of over twenty formatting-style classes, so that no external style files need exist for the program to run. However, the -extend-style, -grammar-level, and -stylefile options allow the built-in rules to be completely replaced, if desired. The -print-stylefile command displays the built-in style rules as a set of style class names, each followed by a colon and a list of HTML tags in that style class. Its output may be used without further modification as a style file, and looks something like this: %% html-pretty version 1.00 date [29-Nov-1997] %% User-modifiable style file generated on Wed Dec 3 08:34:39 1997 %% Uncomment the next line to clear all existing rules, %% or leave it as a comment to preserve them: % default : body : BODY doctype : !DOCTYPE font : ACRONYM B BIG BLINK BT CODE \ DFN EM I KBD Q REV S SAMP \ SMALL STRIKE STRONG T TT U \ VAR head : HEAD html : HTML inline : line-break : BR link : LINK list : DIR DL MENU OL UL list-header : LH list-item : DD DT LI markup-declaration : !ATTLIST !ELEMENT !ENTITY \ !NOTATION !SGML !SHORTREF \ !USEMAP math : ATOP CHOOSE LEFT OF OVER \ RIGHT TAB math-pair : ABOVE BAR BELOW BOX DDOT \ DOT HAT ROOT ROW SQRT SUB \ SUP TILDE VEC pair : A ABBREV ABSTRACT ADDED \ ADDRESS APPLET ARG AROW \ ARRAY AU BDO BLOCKQUOTE BQ \ BUTTON CAPTION CENTER CITE \ CMD COLGROUP CREDIT DEL DIV \ DIV1 DIV2 DIV3 DIV4 DIV5 \ DIV6 FIELDSET FIG FN FONT \ FOOTNOTE FORM FRAMESET HIDE \ IFRAME INS LABEL LANG MAP \ MARGIN MATH MESSAGE \ NOFRAMES NOSCRIPT NOTE \ OBJECT OPTION PERSON QUOTE \ REMOVED SELECT SPAN TABLE \ TBODY TD TEXTAREA TFOOT TH \ THEAD TR paragraph : P plaintext : PLAINTEXT public : "-//IETF//DTD HTML//EN" section : H1 H2 H3 H4 H5 H6 short : ITEM standalone : CHANGED HR IMG INPUT RENDER \ STYLES WBR standalone-nocheck : AREA BASE BASEFONT COL \ FRAME ISINDEX META NEXTID \ OVERLAY PARAM title : TITLE verbatim : LISTING NOBR PRE XMP verbatim-nocheck : SCRIPT STYLE There will be additional data at the end of this output, in the form of the tag relationships discussed below, but we omit it here because of its length. Notice that long lines can be continued on multiple physical lines, for im- proved readability, by terminating them with a backslash immediately before the newline. The output line width in this file is governed by the -width option. As with the command-line -extend-style option, you can replace the colon with an equal sign, and the spaces between tags with commas, if you prefer. In addition to the style classes listed above, the special style class de- fault can be used to force an HTML tag to revert to the default rule for unknown tags: just treat it as ordinary text, although if the -unknown-tag- warning option was specified, a warning will be issued for this now unknown tag. You can use this to override earlier style file settings, and most of the built-in ones. The special style class public is associated with the SGML DOCTYPE identi- fier string, rather than with a list of HTML tags. That string determines which grammar file is to be used for the document, and the value above cor- responds to the most generic grammar level (2.0) recognized by almost all browsers, even though the style file includes tags from higher grammar lev- els. The public style class is the only class whose value is a quoted string. If the tag list to the right of the colon (or equals sign) is empty, then all existing tags for that class are forgotten. If an empty tag list is used with the default style class, then all tags for all classes are for- gotten. These two uses allow you to eliminate all built-in rules, or just certain style classes, so that your style file can start from a known rule base. Style class names are case sensitive, and all of the ones recognized by html-pretty must be spelled with lowercase letters. The style file is expected to contain lines of the forms: style-class : TAG1 TAG2 ... TAG : TAG1 TAG2 ... relationship[TAG] : TAG1 TAG2 ... -option -option -option ... -option value -option value -option value ... In the second form, the style class of the first tag is looked up and as- signed to the remaining tags. That first tag must be entirely UPPERCASE in order to distinguish it from a style class. The remaining tag names can be in either lettercase, or in mixed case; they will be converted to uppercase internally. The third form specifies a relationship between a tag, and one or more other tags. The two currently-recognized relationships are ContainedIn and CannotContain; any others that are specified will simply be ignored, al- though they will take up memory space. For example, the lines CannotContain[TITLE] : LINK META SCRIPT STYLE ContainedIn[LH] : DL OL UL mean that a TITLE environment cannot contain LINK, META, SCRIPT, or STYLE tags, and that an LH tag can only be contained in a DL, OL, or UL environ- ment. Unlike style class definitions, relationships are not cumulative; only the last one of each relationship type encountered for a particular tag will be used. Because of the complexity of SGML grammars, tag relationships cannot be re- liably determined manually. Instead, relationship tables are derived from the grammar files by software developed especially for, and included with, the html-pretty distribution, and then inserted into the standard style files. Thus, it is not anticipated that users will provide tag relation- ship data in their personal style files, although they are free to do so. The built-in relationship tables are derived from a merger of the major grammar levels, so that they match tags in the built-in style classes, which are also derived from that merger. Tag relationships are only checked when the -check-tag-nesting option is specified, and since that is not a default option, omitting tag relation- ships will normally not have a visible effect on the output of html-pretty. In the remaining forms, command-line options appear, and any of the docu- mented options may be used this way. You can use this facility to collect preferred option settings in one place, such as in directory- or user-spe- cific initialization files. Observe that a -stylefile option here can be used to chain temporarily to another file, and this can go on recursively to a depth which is limited only by the run-time stack depth and the maxi- mum number of simultaneously open files. Blank lines, leading and trailing whitespace, and text from a percent (%) comment character to end of line, are ignored. To get a literal percent or quotation mark into a value, prefix it with a backslash; the backslash will be removed when the value is collected. Whitespace separates items, and can be omitted around the colon. There is no significance to the order of items on a line, or lines in the file, ex- cept that later settings can override earlier ones. The same style class name may occur on multiple lines, and the tag lists will be accumulated, discarding duplicates. The line length limit in style files is system-dependent, but guaranteed to be at least 2048 characters. Here is an example of a small style file to add the new tags introduced in the HTML proposed 4.0 grammar (even though they are actually already present in the built-in rules): % HTML proposed 4.0 additions font : Acronym s pair : BdO Button col colgroup Fieldset FrameSet IFrame \ laBel NoFrames NoScript Object span TBody TFoot thEAD public : "-//W3C//DTD HTML 4.0 Transitional//EN" The last style class attached to command or environment name is the one that is used, so specifications in command-line -extend-style, -grammar- level, or -stylefile options can override those in the current directory style file, those in turn override settings from the home directory style file, and those override system-wide style file settings. CATALOG DIRECTORY The built-in style rules in html-pretty, together with the three default startup style files, and the -extend-style class: taglist and -stylefile stylefile options suffice for most uses of the prettyprinter. However, it may be useful to offer a simpler interface that only requires the user to specify the desired grammar level with the -grammar-level gram- mar option, and have html-pretty automatically find the style files. Thus, when the -grammar-level option is used, html-pretty looks for a catalog di- rectory that contains a file named catalog, and one or more style files. The catalog directory is searched for in the same path as the executable file, but in a path starting one level higher. On UNIX, it is usually called share/lib/<programname>, so if the executable program was /usr/lo- cal/bin/html-pretty, the catalog directory is /usr/local/share/lib/html- pretty. [Conventionally, on UNIX systems, directories in the share direc- tory tree are shared across multiple O/S releases and vendor architec- tures.] On other operating systems, the share portion of the path may be omitted. However, the quickest way to find out where the catalog directory resides on your system is to run html-pretty with the -grammar-level and -trace- opens options, to trace the file-opening attempts. The catalog file has a simple format: each non-empty line contains a gram- mar level, and a corresponding filename in that directory. As with style files, comments run from percent (%) to end-of-line, but there is no sup- port for line continuation, since the lines are all very short. To get a literal percent or quotation mark into a value, prefix it with a backslash; the backslash will be removed when the value is collected. This indirect mapping of grammar level to style file means that end users need not know the style file names, and thus, that the names can be changed to meet local requirements. SGML parsers and other SGML software use a similar catalog file to map DTD descriptor strings to local filenames. Lettercase is not significant in grammar-level names, although it may be for filenames. The standard style files are all named in a single letter- case, so that the catalog entries work on all file systems. If you are developing a new set of styles, you probably do not want them put in the system-wide catalog directory until they have been completed and debugged. In such a case, you can use the -catalogfile option to specify an alternate catalog file location. Once they are ready for wider release, you (or your system manager) can merge your catalog file with the system one, and copy your style files into the system catalog directory. COMMENTS IN HTML AND SGML The SGML (and thus, HTML) comment syntax confuses many users, including browser programmers, and book writers, who either get it wrong, or fail to explain it properly. SGML has a command called markup declaration open, or mdo for short, which defaults to the two-character sequence <!, and is matched by a markup dec- laration close, or mdc, which defaults to the one-character sequence >. The mdo must be immediately followed either by a keyword, such as ATTLIST, DOCTYPE, ELEMENT, ENTITY, NOTATION, SGML, SHORTREF, or USEMAP, or else by a comment start, which is the two-character sequence --. In the latter case, there must later be a second -- pair to signal a comment end. Anything af- ter that second pair is non-comment text to be parsed. However, additional comments can appear, provided that they are surrounded by -- pairs. Eventu- ally, the markup declaration is ended by an mdc command, although white- space may follow the last comment. Thus, <!--one-- --two-- --three--> <!-- one -- -- two -- -- three -- > <!-- one -- -- two -- -- three -- > are all legal markup declarations, each of which consists of three com- ments. However, these are in error: <! --one-- --two-- --three-- > <!-- one -- two -- three -- > <!-- one -- -- two -- - - three - - > The first has an illegal space after the mdo, the second has the word two outside a comment, and the third has the text - - three - - outside the comment. Given these rules, can SGML comments be nested? It might appear that they can, since <!-- <!-- --> --> <!-- <!-- --> <!-- --> --> are both accepted by an SGML parser. However, the nesting is illusory, since the first has two comments, containing the text <! and >, and the third has three comments: <! and > <! and >. As soon as we put words be- tween the hyphen pairs, such as <!-- one <!-- two --> three --> <!-- one <!-- two --> <!-- three --> four --> the word two lies outside the comment in the first, and two and three are outside the comment in the second. Therefore, SGML and HTML comments can- not in general be nested. Finally, because of the special significance of -- as both a comment start and a comment end inside a markup declaration, you must be careful about using adjacent hyphens in the comment text. In particular, if you use a line of hyphens to set off one block of text from another, the number of hyphens must be a multiple of 4, such as this 60-hyphen example: <!------------------------------------------------------------> Having 57, 58, 59, 61, 62, or 63 hyphens won't do! html-pretty does not distinguish markup declarations, beginning with <!, from tags, beginning with <, except for comments, which have to be parsed separately anyway to handle the pairs-of-pairs-of-hyphens balance require- ment. Thus, it considers !DOCTYPE to be a tag name, when strictly speak- ing, the ! is part of the markup declaration open. However, since the closing character > can always be represented by an SGML entity, <, html-pretty can safely assume that anything between angle brackets is a `tag'. That is why the style files have a rule doctype : !DOCTYPE with the exclamation mark prefixed to the word DOCTYPE. HTML GRAMMAR CONSTRAINTS It is not immediately obvious from the HTML grammars just which tags can be contained in, or by, other tag environments. The list below was automati- cally extracted from the HTML grammar files by software developed espe- cially for, and included with, the html-pretty distribution. The grammar rules for some environments explicitly forbid certain tags from appearing in those environments; this is indicated in the lists below by the prefix cannot contain:. Because the HTML definition is evolving, many tags are defined only in cer- tain grammar files. In such a case, the grammar level is indicated by a suffix with a colon and a sorted list of one or more levels: 2, 3, 3.2, 4C (4-Cougar), 4L (4-loose), and M (Mosaic and Netscape). [The level 4-strict from July and November, 1997, is excluded because the grammar file omits many heavily-used tags, in anticipation that their features will be pro- vided by style sheets.] Although there are other HTML grammar versions, these are the major ones that are important for current browsers. If no grammar level list is present, then the tag is available in all of the levels listed at the start of this paragraph. The `tag' #PCDATA means parsed character data, an SGML term for text of zero or more ordinary characters and/or SGML named and numeric entities, such as " and ". The `tag' ANY is a catch-all that means #PCDATA, or any SGML tag defined in the grammar. It should not be used in SGML grammars, but it is present in the Mosaic/Netscape grammar file, html-mcom.dtd. The `tag' CDATA means character data, an SGML term for zero or more charac- ters that are not further examined, except for the purposes of scanning for an end tag. This corresponds to verbatim text in typesetting and word-pro- cessing systems. The special `tag' EMPTY means that the environment is empty, and further, that a matching end tag is forbidden. If no end tag is shown in the paragraph heading, then it must be omitted in HTML files. Unless suffixed by optional, all tags listed in the remainder of this sec- tion are required. However, if a grammar level list is attached to op- tional or required, then the tag is defined only in those grammar levels. Use these lists as a portability guide: if a tag is implemented in only specified grammar levels, then documents which use it are more likely to be displayed improperly by Web browsers. #PCDATA contained in: A ABBR:4L ABBREV:3 ABOVE:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BAR:3 BDO:4C,4L BELOW:3 BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BOX:3 BQ:3 BT:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DDOT:3 DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DOT:3 DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 HAT:3 I IFRAME:4L INS:3,4L ITEM:3 KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI MATH:3 NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OF:3 OPTION P PERSON:3 PRE Q:3,4C,4L ROOT:3 S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L SQRT:3 STRIKE:3.2,4L STRONG STYLE:3 SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L T:3 TD:3,3.2,4C,4L TEXTAREA TEXTFLOW:4C TH:3,3.2,4C,4L TILDE:3 TITLE TT U:3,3.2,4C,4L VAR VEC:3 <A> ... </A> contained in: ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M H1:2,3,M H2:2,3,M H3:2,3,M H4:2,3,M H5:2,3,M H6:2,3,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M cannot contain: A <ABBR> required:4L ... </ABBR> required:4L contained in: A:4L ABBR:4L ADDRESS:4L APPLET:4L B:4L BDO:4L BIG:4L BLOCKQUOTE:4L BODY:4L BUTTON:4L CAPTION:4L CENTER:4L CITE:4L CODE:4L DD:4L DEL:4L DFN:4L DIV:4L DT:4L EM:4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L I:4L IFRAME:4L INS:4L KBD:4L LABEL:4L LEGEND:4L LI:4L NOSCRIPT:4L OBJECT:4L P:4L PRE:4L Q:4L S:4L SAMP:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TD:4L TH:4L TT:4L U:4L VAR:4L contains: #PCDATA:4L A:4L ABBR:4L APPLET:4L B:4L BASEFONT:4L BDO:4L BIG:4L BR:4L BUTTON:4L CITE:4L CODE:4L DFN:4L EM:4L FONT:4L I:4L IFRAME:4L IMG:4L INPUT:4L KBD:4L LABEL:4L MAP:4L OBJECT:4L Q:4L S:4L SAMP:4L SCRIPT:4L SELECT:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TEXTAREA:4L TT:4L U:4L VAR:4L <ABBREV> required:3 ... </ABBREV> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <ABOVE> required:3 ... </ABOVE> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <ACRONYM> required:3 ... </ACRONYM> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <ADDRESS> ... </ADDRESS> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L P PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M ANY contained in: BASEFONT:M <APPLET> required:3.2,4C,4L ... </APPLET> required:3.2,4C,4L contained in: A:3.2,4C,4L ABBR:4L ADDRESS:3.2,4C,4L APPLET:3.2,4L B:3.2,4C,4L BDO:4C,4L BIG:3.2,4C,4L BLOCKQUOTE:3.2,4C,4L BODY:3.2,4C,4L BUTTON:4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L CITE:3.2,4C,4L CODE:3.2,4C,4L DD:3.2,4C,4L DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L EM:3.2,4C,4L FIELDSET:4C,4L FONT:3.2,4C,4L FORM:3.2,4C,4L H1:3.2,4C,4L H2:3.2,4C,4L H3:3.2,4C,4L H4:3.2,4C,4L H5:3.2,4C,4L H6:3.2,4C,4L I:3.2,4C,4L IFRAME:4L INS:4L KBD:3.2,4C,4L LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L PRE:3.2,4C Q:4C,4L S:4C,4L SAMP:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L U:3.2,4C,4L VAR:3.2,4C,4L contains: #PCDATA:3.2,4L A:3.2,4L ABBR:4L ADDRESS:4L APPLET:3.2,4L B:3.2,4L BASEFONT:3.2,4L BDO:4L BIG:3.2,4L BLOCKQUOTE:4L BR:3.2,4L BUTTON:4L CENTER:4L CITE:3.2,4L CODE:3.2,4L DFN:3.2,4L DIR:4L DIV:4L DL:4L EM:3.2,4L FIELDSET:4L FONT:3.2,4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:3.2,4L IFRAME:4L IMG:3.2,4L INPUT:3.2,4L ISINDEX:4L KBD:3.2,4L LABEL:4L MAP:3.2,4L MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PARAM:3.2,4C,4L PRE:4L Q:4L S:4L SAMP:3.2,4L SCRIPT:3.2,4L SELECT:3.2,4L SMALL:3.2,4L SPAN:4L STRIKE:3.2,4L STRONG:3.2,4L SUB:3.2,4L SUP:3.2,4L TABLE:4L TEXTAREA:3.2,4L TEXTFLOW:4C TT:3.2,4L U:3.2,4L UL:4L VAR:3.2,4L <AREA> required:3.2,4C,4L contained in: MAP:3.2,4C,4L contains: EMPTY:3.2,4C,4L <ARRAY> required:3 ... </ARRAY> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: ROW:3 <ATOP> required:3 contained in: BOX:3 contains: EMPTY:3 <AU> required:3 ... </AU> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <B> ... </B> contained in: A ABBR:4L ABBREV:3 ABOVE:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BAR:3 BDO:4C,4L BELOW:3 BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BOX:3 BQ:3 BT:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DDOT:3 DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DOT:3 DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 HAT:3 I IFRAME:4L INS:3,4L ITEM:3 KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI MATH:3 NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OF:3 P PERSON:3 PRE Q:3,4C,4L ROOT:3 S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L SQRT:3 STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L T:3 TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TILDE:3 TT U:3,3.2,4C,4L VAR VEC:3 contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <BAR> required:3 ... </BAR> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <BASE> contained in: HEAD contains: EMPTY <BASEFONT> required:3.2,4C,4L,M contained in: A:3.2,4C,4L,M ABBR:4L ADDRESS:3.2,4C,4L,M APPLET:3.2,4L B:3.2,4C,4L,M BDO:4C,4L BIG:3.2,4C,4L BLINK:M BLOCKQUOTE:3.2,4C,4L,M BODY:3.2,4C,4L,M BUTTON:4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L,M CITE:3.2,4C,4L,M CODE:3.2,4C,4L,M DD:3.2,4C,4L,M DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L,M EM:3.2,4C,4L,M FIELDSET:4C,4L FONT:3.2,4C,4L,M FORM:3.2,4C,4L,M H1:3.2,4C,4L,M H2:3.2,4C,4L,M H3:3.2,4C,4L,M H4:3.2,4C,4L,M H5:3.2,4C,4L,M H6:3.2,4C,4L,M I:3.2,4C,4L,M IFRAME:4L INS:4L KBD:3.2,4C,4L,M LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L,M NOBR:M NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L,M PRE:3.2,4C Q:4C,4L S:4C,4L SAMP:3.2,4C,4L,M SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L,M SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L,M U:3.2,4C,4L VAR:3.2,4C,4L,M contains: ANY:M EMPTY:3.2,4C,4L <BDO> required:4C,4L ... </BDO> required:4C,4L contained in: A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4L B:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BODY:4C,4L BUTTON:4L CAPTION:4C,4L CENTER:4C,4L CITE:4C,4L CODE:4C,4L DD:4C,4L DEL:4L DFN:4C,4L DIV:4C,4L DT:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L I:4C,4L IFRAME:4L INS:4L KBD:4C,4L LABEL:4C,4L LEGEND:4L LI:4C,4L NOSCRIPT:4L OBJECT:4C,4L P:4C,4L PRE:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L SUB:4C,4L SUP:4C,4L TD:4C,4L TEXTFLOW:4C TH:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L contains: #PCDATA:4C,4L A:4C,4L ABBR:4L APPLET:4C,4L B:4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:4C,4L BR:4C,4L BUTTON:4L CITE:4C,4L CODE:4C,4L DFN:4C,4L EM:4C,4L FONT:4C,4L I:4C,4L IFRAME:4L IMG:4C,4L INPUT:4C,4L KBD:4C,4L LABEL:4C,4L MAP:4C,4L OBJECT:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L STYLE:4C SUB:4C,4L SUP:4C,4L TEXTAREA:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L <BELOW> required:3 ... </BELOW> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <BIG> required:3,3.2,4C,4L ... </BIG> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L INS:3,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,3.2,4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <BLINK> required:M ... </BLINK> required:M contained in: A:M ADDRESS:M B:M BLINK:M BLOCKQUOTE:M BODY:M CENTER:M CITE:M CODE:M DD:M DT:M EM:M FONT:M FORM:M H1:M H2:M H3:M H4:M H5:M H6:M I:M KBD:M LI:M NOBR:M P:M PRE:M SAMP:M STRONG:M TT:M VAR:M contains: #PCDATA:M A:M B:M BASEFONT:M BLINK:M BR:M CENTER:M CITE:M CODE:M EM:M FONT:M I:M IMG:M KBD:M NOBR:M SAMP:M STRONG:M TT:M VAR:M WBR:M <BLOCKQUOTE> ... </BLOCKQUOTE> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BQ:3 BR BUTTON:4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DEL:3 DFN:3,3.2,4C,4L DIR DIV:3,3.2,4C,4L DL EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 HR I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 ISINDEX KBD LABEL:4C,4L LANG:3 LISTING:2,3,3.2,4C,M MAP:3.2,4C,4L MATH:3 MENU NOBR:M NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L UL VAR WBR:M XMP:2,3,3.2,4C,M <BODY> optional ... </BODY> optional contained in: HTML NOFRAMES:4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BQ:3 BR BUTTON:4L CENTER:3.2,4C,4L,M CITE CODE DEL:3,4L DFN:3,3.2,4C,4L DIR DIV:3,3.2,4C,4L DL EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 HR I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3,4L ISINDEX KBD LABEL:4C,4L LANG:3 LISTING:2,3,3.2,4C,M MAP:3.2,4C,4L MATH:3 MENU NOBR:M NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L UL VAR WBR:M XMP:2,3,3.2,4C,M <BOX> required:3 ... </BOX> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 ATOP:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 CHOOSE:3 DDOT:3 DOT:3 HAT:3 LEFT:3 OVER:3 RIGHT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <BQ> required:3 ... </BQ> required:3 (deprecated) contained in: BLOCKQUOTE:3 BODY:3 BQ:3 DD:3 DIV:3 FIG:3 FORM:3 LI:3 NOTE:3 TD:3 TH:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BQ:3 BR:3 CITE:3 CODE:3 CREDIT:3 DEL:3 DFN:3 DIR:3 DIV:3 DL:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 HR:3 I:3 IMG:3 INS:3 ISINDEX:3 KBD:3 LANG:3 LISTING:3 MATH:3 MENU:3 NOTE:3 OL:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TABLE:3 TT:3 U:3 UL:3 VAR:3 XMP:3 <BR> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: EMPTY <BT> required:3 ... </BT> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <BUTTON> required:4L ... </BUTTON> required:4L contained in: A:4L ABBR:4L ADDRESS:4L APPLET:4L B:4L BDO:4L BIG:4L BLOCKQUOTE:4L BODY:4L CAPTION:4L CENTER:4L CITE:4L CODE:4L DD:4L DEL:4L DFN:4L DIV:4L DT:4L EM:4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L I:4L IFRAME:4L INS:4L KBD:4L LABEL:4L LEGEND:4L LI:4L NOSCRIPT:4L OBJECT:4L P:4L PRE:4L Q:4L S:4L SAMP:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TD:4L TH:4L TT:4L U:4L VAR:4L contains: #PCDATA:4L ABBR:4L ADDRESS:4L APPLET:4L B:4L BASEFONT:4L BDO:4L BIG:4L BLOCKQUOTE:4L BR:4L CENTER:4L CITE:4L CODE:4L DFN:4L DIR:4L DIV:4L DL:4L EM:4L FONT:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:4L IMG:4L KBD:4L MAP:4L MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PRE:4L Q:4L S:4L SAMP:4L SCRIPT:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TABLE:4L TT:4L U:4L UL:4L VAR:4L cannot contain: A:4L BUTTON:4L FIELDSET:4L FORM:4L IFRAME:4L INPUT:4L ISINDEX:4L LABEL:4L SELECT:4L TEXTAREA:4L <CAPTION> required:3,3.2,4C,4L ... </CAPTION> required:3,3.2,4C,4L contained in: FIELDSET:4C FIG:3 TABLE:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L CDATA contained in: LISTING:2,3,3.2,4C,M PLAINTEXT:2,3,3.2,4C,M SCRIPT:3.2,4C,4L STYLE:3.2,4C,4L XMP:2,3,3.2,4C,M <CENTER> required:3.2,4C,4L,M ... </CENTER> required:3.2,4C,4L,M contained in: A:M ADDRESS:M APPLET:4L B:M BLINK:M BLOCKQUOTE:3.2,4C,4L,M BODY:3.2,4C,4L,M BUTTON:4L CENTER:3.2,4C,4L,M CITE:M CODE:M DD:3.2,4C,4L,M DEL:4L DIV:3.2,4C,4L DT:M EM:M FIELDSET:4C,4L FONT:M FORM:3.2,4C,4L,M H1:M H2:M H3:M H4:M H5:M H6:M I:M IFRAME:4L INS:4L KBD:M LI:3.2,4C,4L,M NOBR:M NOSCRIPT:4L OBJECT:4C,4L P:M SAMP:M STRONG:M TD:3.2,4C,4L TH:3.2,4C,4L TT:M VAR:M contains: #PCDATA:3.2,4C,4L,M A:3.2,4C,4L,M ABBR:4L ADDRESS:3.2,4C,4L,M APPLET:3.2,4C,4L B:3.2,4C,4L,M BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3.2,4C,4L BLINK:M BLOCKQUOTE:3.2,4C,4L,M BR:3.2,4C,4L,M BUTTON:4L CENTER:3.2,4C,4L,M CITE:3.2,4C,4L,M CODE:3.2,4C,4L,M DFN:3.2,4C,4L DIR:3.2,4C,4L,M DIV:3.2,4C,4L DL:3.2,4C,4L,M EM:3.2,4C,4L,M FIELDSET:4C,4L FONT:3.2,4C,4L,M FORM:3.2,4C,4L,M H1:3.2,4C,4L,M H2:3.2,4C,4L,M H3:3.2,4C,4L,M H4:3.2,4C,4L,M H5:3.2,4C,4L,M H6:3.2,4C,4L,M HR:3.2,4C,4L,M I:3.2,4C,4L,M IFRAME:4L IMG:3.2,4C,4L,M INPUT:3.2,4C,4L ISINDEX:3.2,4C,4L,M KBD:3.2,4C,4L,M LABEL:4C,4L LISTING:3.2,4C,M MAP:3.2,4C,4L MENU:3.2,4C,4L,M NOBR:M NOFRAMES:4L NOSCRIPT:4L OBJECT:4C,4L OL:3.2,4C,4L,M P:3.2,4C,4L,M PRE:3.2,4C,4L,M Q:4C,4L S:4C,4L SAMP:3.2,4C,4L,M SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L,M STYLE:4C SUB:3.2,4C,4L SUP:3.2,4C,4L TABLE:3.2,4C,4L TEXTAREA:3.2,4C,4L TT:3.2,4C,4L,M U:3.2,4C,4L UL:3.2,4C,4L,M VAR:3.2,4C,4L,M WBR:M XMP:3.2,4C,M <CHOOSE> required:3 contained in: BOX:3 contains: EMPTY:3 <CITE> ... </CITE> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <CODE> ... </CODE> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <COL> required:4C,4L contained in: COLGROUP:4C,4L TABLE:4C,4L contains: EMPTY:4C,4L <COLGROUP> required:4C,4L ... </COLGROUP> optional:4C,4L contained in: TABLE:4C,4L contains: COL:4C,4L <CREDIT> required:3 ... </CREDIT> required:3 contained in: BLOCKQUOTE:3 BQ:3 FIG:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <DD> ... </DD> optional contained in: DL contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:4L APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BQ:3 BR BUTTON:4L CENTER:3.2,4C,4L,M CITE CODE DEL:3 DFN:3,3.2,4C,4L DIR DIV:3.2,4C,4L DL EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:3.2,4C,4L I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 ISINDEX KBD LABEL:4C,4L LANG:3 LISTING:2,3,3.2,4C,M MAP:3.2,4C,4L MATH:3 MENU NOBR:M NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L UL VAR WBR:M XMP:2,3,3.2,4C,M <DDOT> required:3 ... </DDOT> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <DEL> required:3,4L ... </DEL> required:3,4L contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3,4L BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3,4L A:3,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:4L APPLET:4L AU:3 B:3,4L BASEFONT:4L BDO:4L BIG:3,4L BLOCKQUOTE:4L BR:3,4L BUTTON:4L CENTER:4L CITE:3,4L CODE:3,4L DEL:3 DFN:3,4L DIR:4L DIV:4L DL:4L EM:3,4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:3,4L IFRAME:4L IMG:3,4L INPUT:4L INS:3 ISINDEX:4L KBD:3,4L LABEL:4L LANG:3 MAP:4L MATH:3 MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PERSON:3 PRE:4L Q:3,4L S:3,4L SAMP:3,4L SCRIPT:4L SELECT:4L SMALL:3,4L SPAN:4L STRIKE:4L STRONG:3,4L SUB:3,4L SUP:3,4L TAB:3 TABLE:4L TEXTAREA:4L TT:3,4L U:3,4L UL:4L VAR:3,4L <DFN> required:3,3.2,4C,4L ... </DFN> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L INS:3,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,3.2,4C,4L PERSON:3 PRE:3,3.2,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <DIR> ... </DIR> (deprecated) contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: LI cannot contain: ADDRESS:4L BLOCKQUOTE BQ:3 CENTER:3.2,4C,4L,M DIR DIV:3.2,4C,4L DL FIELDSET:4C,4L FIG:3 FORM H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:3.2,4C,4L ISINDEX LISTING:2,3,3.2,4C,M MENU NOFRAMES:4L NOSCRIPT:4L NOTE:3 OL P PRE TABLE:3,3.2,4C,4L UL XMP:2,3,3.2,4C,M <DIV> required:3,3.2,4C,4L ... </DIV> required:3,3.2,4C,4L contained in: APPLET:4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUTTON:4L CENTER:3.2,4C,4L DD:3.2,4C,4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM:3,3.2,4C,4L IFRAME:4L INS:4L LI:3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,3.2,4C,4L APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BQ:3 BR:3,3.2,4C,4L BUTTON:4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L DIR:3,3.2,4C,4L DIV:3,3.2,4C,4L DL:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L HR:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 ISINDEX:3,3.2,4C,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LISTING:3,3.2,4C MAP:3.2,4C,4L MATH:3 MENU:3,3.2,4C,4L NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL:3,3.2,4C,4L P:3,3.2,4C,4L PERSON:3 PRE:3,3.2,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L UL:3,3.2,4C,4L VAR:3,3.2,4C,4L XMP:3,3.2,4C <DL> ... </DL> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: DD DT LH:3 <DOT> required:3 ... </DOT> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <DT> ... </DT> optional contained in: DL contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <EM> ... </EM> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M EMPTY contained in: AREA:3.2,4C,4L ATOP:3 BASE BASEFONT:3.2,4C,4L BR CHOOSE:3 COL:4C,4L FRAME:4L HR IMG INPUT ISINDEX LEFT:3 LINK META NEXTID:2,3,M OVER:3 OVERLAY:3 PARAM:3.2,4C,4L RIGHT:3 TAB:3 WBR:M <FIELDSET> required:4C,4L ... </FIELDSET> required:4C,4L contained in: APPLET:4L BLOCKQUOTE:4C,4L BODY:4C,4L CENTER:4C,4L DD:4C,4L DEL:4L DIV:4C,4L FIELDSET:4C,4L FORM:4C,4L IFRAME:4L INS:4L LI:4C,4L NOSCRIPT:4L OBJECT:4C,4L TD:4C,4L TH:4C,4L contains: #PCDATA:4C,4L A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4C,4L B:4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BR:4C,4L BUTTON:4L CAPTION:4C CENTER:4C,4L CITE:4C,4L CODE:4C,4L DFN:4C,4L DIR:4C,4L DIV:4C,4L DL:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L HR:4C,4L I:4C,4L IFRAME:4L IMG:4C,4L INPUT:4C,4L ISINDEX:4C,4L KBD:4C,4L LABEL:4C,4L LEGEND:4L LISTING:4C MAP:4C,4L MENU:4C,4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4C,4L OL:4C,4L P:4C,4L PRE:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L STYLE:4C SUB:4C,4L SUP:4C,4L TABLE:4C,4L TEXTAREA:4C,4L TT:4C,4L U:4C,4L UL:4C,4L VAR:4C,4L XMP:4C <FIG> required:3 ... </FIG> required:3 contained in: BLOCKQUOTE:3 BODY:3 BQ:3 DD:3 DIV:3 FORM:3 LI:3 NOTE:3 TD:3 TH:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BQ:3 BR:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DEL:3 DFN:3 DIR:3 DIV:3 DL:3 EM:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 HR:3 I:3 INS:3 ISINDEX:3 KBD:3 LANG:3 LISTING:3 MATH:3 MENU:3 NOTE:3 OL:3 OVERLAY:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TABLE:3 TT:3 U:3 UL:3 VAR:3 XMP:3 cannot contain: FIG:3 IMG:3 <FONT> required:3.2,4C,4L,M ... </FONT> required:3.2,4C,4L,M contained in: A:3.2,4C,4L,M ABBR:4L ADDRESS:3.2,4C,4L,M APPLET:3.2,4L B:3.2,4C,4L,M BDO:4C,4L BIG:3.2,4C,4L BLINK:M BLOCKQUOTE:3.2,4C,4L,M BODY:3.2,4C,4L,M BUTTON:4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L,M CITE:3.2,4C,4L,M CODE:3.2,4C,4L,M DD:3.2,4C,4L,M DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L,M EM:3.2,4C,4L,M FIELDSET:4C,4L FONT:3.2,4C,4L,M FORM:3.2,4C,4L,M H1:3.2,4C,4L,M H2:3.2,4C,4L,M H3:3.2,4C,4L,M H4:3.2,4C,4L,M H5:3.2,4C,4L,M H6:3.2,4C,4L,M I:3.2,4C,4L,M IFRAME:4L INS:4L KBD:3.2,4C,4L,M LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L,M NOBR:M NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L,M PRE:M Q:4C,4L S:4C,4L SAMP:3.2,4C,4L,M SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L,M SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L,M U:3.2,4C,4L VAR:3.2,4C,4L,M contains: #PCDATA:3.2,4C,4L,M A:3.2,4C,4L,M ABBR:4L APPLET:3.2,4C,4L B:3.2,4C,4L,M BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3.2,4C,4L BLINK:M BR:3.2,4C,4L,M BUTTON:4L CENTER:M CITE:3.2,4C,4L,M CODE:3.2,4C,4L,M DFN:3.2,4C,4L EM:3.2,4C,4L,M FONT:3.2,4C,4L,M I:3.2,4C,4L,M IFRAME:4L IMG:3.2,4C,4L,M INPUT:3.2,4C,4L KBD:3.2,4C,4L,M LABEL:4C,4L MAP:3.2,4C,4L NOBR:M OBJECT:4C,4L Q:4C,4L S:4C,4L SAMP:3.2,4C,4L,M SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L,M STYLE:4C SUB:3.2,4C,4L SUP:3.2,4C,4L TEXTAREA:3.2,4C,4L TT:3.2,4C,4L,M U:3.2,4C,4L VAR:3.2,4C,4L,M WBR:M <FORM> ... </FORM> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A 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DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <H2> ... </H2> contained in: A:2,3,M APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <H3> ... </H3> contained in: A:2,3,M APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <H4> ... </H4> contained in: A:2,3,M APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <H5> ... </H5> contained in: A:2,3,M APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <H6> ... </H6> contained in: A:2,3,M APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD:4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M 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contains: #PCDATA:3,4L A:3,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:4L APPLET:4L AU:3 B:3,4L BASEFONT:4L BDO:4L BIG:3,4L BLOCKQUOTE:4L BR:3,4L BUTTON:4L CENTER:4L CITE:3,4L CODE:3,4L DEL:3 DFN:3,4L DIR:4L DIV:4L DL:4L EM:3,4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:3,4L IFRAME:4L IMG:3,4L INPUT:4L INS:3 ISINDEX:4L KBD:3,4L LABEL:4L LANG:3 MAP:4L MATH:3 MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PERSON:3 PRE:4L Q:3,4L S:3,4L SAMP:3,4L SCRIPT:4L SELECT:4L SMALL:3,4L SPAN:4L STRIKE:4L STRONG:3,4L SUB:3,4L SUP:3,4L TAB:3 TABLE:4L TEXTAREA:4L TT:3,4L U:3,4L UL:4L VAR:3,4L <ISINDEX> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM HEAD IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: EMPTY <ITEM> required:3 ... </ITEM> optional:3 contained in: ROW:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <KBD> ... </KBD> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <LABEL> required:4C,4L ... </LABEL> required:4C,4L contained in: A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4L B:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BODY:4C,4L CAPTION:4C,4L CENTER:4C,4L CITE:4C,4L CODE:4C,4L DD:4C,4L DEL:4L DFN:4C,4L DIV:4C,4L DT:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L I:4C,4L IFRAME:4L INS:4L KBD:4C,4L LEGEND:4L LI:4C,4L NOSCRIPT:4L OBJECT:4C,4L P:4C,4L PRE:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L SUB:4C,4L SUP:4C,4L TD:4C,4L TEXTFLOW:4C TH:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L contains: #PCDATA:4C,4L A:4C,4L ABBR:4L APPLET:4C,4L B:4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:4C,4L BR:4C,4L BUTTON:4L CITE:4C,4L CODE:4C,4L DFN:4C,4L EM:4C,4L FONT:4C,4L I:4C,4L IFRAME:4L IMG:4C,4L INPUT:4C,4L KBD:4C,4L MAP:4C,4L OBJECT:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L STYLE:4C SUB:4C,4L SUP:4C,4L TEXTAREA:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L cannot contain: LABEL:4C,4L <LANG> required:3 ... </LANG> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <LEFT> required:3 contained in: BOX:3 contains: EMPTY:3 <LEGEND> required:4L ... </LEGEND> required:4L contained in: FIELDSET:4L contains: #PCDATA:4L A:4L ABBR:4L APPLET:4L B:4L BASEFONT:4L BDO:4L BIG:4L BR:4L BUTTON:4L CITE:4L CODE:4L DFN:4L EM:4L FONT:4L I:4L IFRAME:4L IMG:4L INPUT:4L KBD:4L LABEL:4L MAP:4L OBJECT:4L Q:4L S:4L SAMP:4L SCRIPT:4L SELECT:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TEXTAREA:4L TT:4L U:4L VAR:4L <LH> required:3 ... </LH> optional:3 contained in: DL:3 OL:3 UL:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <LI> ... </LI> optional contained in: DIR MENU OL UL contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:4L APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BQ:3 BR BUTTON:4L CENTER:3.2,4C,4L,M CITE CODE DEL:3 DFN:3,3.2,4C,4L DIR DIV:3.2,4C,4L DL EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:3.2,4C,4L I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 ISINDEX KBD LABEL:4C,4L LANG:3 LISTING:2,3,3.2,4C,M MAP:3.2,4C,4L MATH:3 MENU NOBR:M NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L UL VAR WBR:M XMP:2,3,3.2,4C,M <LINK> contained in: HEAD contains: EMPTY <LISTING> required:2,3,3.2,4C,M ... </LISTING> required:2,3,3.2,4C,M (deprecated) contained in: BLOCKQUOTE:2,3,3.2,4C,M BODY:2,3,3.2,4C,M BQ:3 CENTER:3.2,4C,M DD:2,3,3.2,4C,M DIV:3,3.2,4C FIELDSET:4C FIG:3 FORM:2,3,3.2,4C,M LI:2,3,3.2,4C,M NOTE:3 OBJECT:4C TD:3,3.2,4C TH:3,3.2,4C contains: CDATA:2,3,3.2,4C,M <MAP> required:3.2,4C,4L ... </MAP> required:3.2,4C,4L contained in: A:3.2,4C,4L ABBR:4L ADDRESS:3.2,4C,4L APPLET:3.2,4L B:3.2,4C,4L BDO:4C,4L BIG:3.2,4C,4L BLOCKQUOTE:3.2,4C,4L BODY:3.2,4C,4L BUTTON:4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L CITE:3.2,4C,4L CODE:3.2,4C,4L DD:3.2,4C,4L DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L EM:3.2,4C,4L FIELDSET:4C,4L FONT:3.2,4C,4L FORM:3.2,4C,4L H1:3.2,4C,4L H2:3.2,4C,4L H3:3.2,4C,4L H4:3.2,4C,4L H5:3.2,4C,4L H6:3.2,4C,4L I:3.2,4C,4L IFRAME:4L INS:4L KBD:3.2,4C,4L LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L PRE:3.2,4C,4L Q:4C,4L S:4C,4L SAMP:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L U:3.2,4C,4L VAR:3.2,4C,4L contains: AREA:3.2,4C,4L <MATH> required:3 ... </MATH> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 cannot contain: A:3 ABBREV:3 ACRONYM:3 AU:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 TAB:3 TT:3 U:3 VAR:3 <MENU> ... </MENU> (deprecated) contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: LI cannot contain: ADDRESS:4L BLOCKQUOTE BQ:3 CENTER:3.2,4C,4L,M DIR DIV:3.2,4C,4L DL FIELDSET:4C,4L FIG:3 FORM H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:3.2,4C,4L ISINDEX LISTING:2,3,3.2,4C,M MENU NOFRAMES:4L NOSCRIPT:4L NOTE:3 OL P PRE TABLE:3,3.2,4C,4L UL XMP:2,3,3.2,4C,M <META> contained in: HEAD contains: EMPTY <NEXTID> required:2,3,M (deprecated) contained in: HEAD:2,3,M contains: EMPTY:2,3,M <NOBR> required:M ... </NOBR> required:M contained in: A:M ADDRESS:M B:M BLINK:M BLOCKQUOTE:M BODY:M CENTER:M CITE:M CODE:M DD:M DT:M EM:M FONT:M FORM:M H1:M H2:M H3:M H4:M H5:M H6:M I:M KBD:M LI:M NOBR:M P:M SAMP:M STRONG:M TT:M VAR:M contains: #PCDATA:M A:M B:M BASEFONT:M BLINK:M BR:M CENTER:M CITE:M CODE:M EM:M FONT:M I:M IMG:M KBD:M NOBR:M SAMP:M STRONG:M TT:M VAR:M WBR:M <NOFRAMES> required:4L ... </NOFRAMES> required:4L contained in: APPLET:4L BLOCKQUOTE:4L BODY:4L BUTTON:4L CENTER:4L DD:4L DEL:4L DIV:4L FIELDSET:4L FORM:4L FRAMESET:4L IFRAME:4L INS:4L LI:4L NOSCRIPT:4L OBJECT:4L TD:4L TH:4L contains: BODY:4L cannot contain: #PCDATA:4L A:4L ABBR:4L ADDRESS:4L APPLET:4L B:4L BASEFONT:4L BDO:4L BIG:4L BLOCKQUOTE:4L BR:4L BUTTON:4L CENTER:4L CITE:4L CODE:4L DFN:4L DIR:4L DIV:4L DL:4L EM:4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:4L IFRAME:4L IMG:4L INPUT:4L ISINDEX:4L KBD:4L LABEL:4L MAP:4L MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PRE:4L Q:4L S:4L SAMP:4L SCRIPT:4L SELECT:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TABLE:4L TEXTAREA:4L TT:4L U:4L UL:4L VAR:4L <NOSCRIPT> required:4L ... </NOSCRIPT> required:4L contained in: APPLET:4L BLOCKQUOTE:4L BODY:4L BUTTON:4L CENTER:4L DD:4L DEL:4L DIV:4L FIELDSET:4L FORM:4L IFRAME:4L INS:4L LI:4L NOSCRIPT:4L OBJECT:4L TD:4L TH:4L contains: #PCDATA:4L A:4L ABBR:4L ADDRESS:4L APPLET:4L B:4L BASEFONT:4L BDO:4L BIG:4L BLOCKQUOTE:4L BR:4L BUTTON:4L CENTER:4L CITE:4L CODE:4L DFN:4L DIR:4L DIV:4L DL:4L EM:4L FIELDSET:4L FONT:4L FORM:4L H1:4L H2:4L H3:4L H4:4L H5:4L H6:4L HR:4L I:4L IFRAME:4L IMG:4L INPUT:4L ISINDEX:4L KBD:4L LABEL:4L MAP:4L MENU:4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4L OL:4L P:4L PRE:4L Q:4L S:4L SAMP:4L SCRIPT:4L SELECT:4L SMALL:4L SPAN:4L STRIKE:4L STRONG:4L SUB:4L SUP:4L TABLE:4L TEXTAREA:4L TT:4L U:4L UL:4L VAR:4L <NOTE> required:3 ... </NOTE> required:3 contained in: BLOCKQUOTE:3 BODY:3 BQ:3 DD:3 DIV:3 FIG:3 FORM:3 LI:3 NOTE:3 TD:3 TH:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BQ:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 DIR:3 DIV:3 DL:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 HR:3 I:3 IMG:3 INS:3 ISINDEX:3 KBD:3 LANG:3 LISTING:3 MATH:3 MENU:3 NOTE:3 OL:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TABLE:3 TT:3 U:3 UL:3 VAR:3 XMP:3 <OBJECT> required:4C,4L ... </OBJECT> required:4C,4L contained in: A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4L B:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BODY:4C,4L BUTTON:4L CAPTION:4C,4L CENTER:4C,4L CITE:4C,4L CODE:4C,4L DD:4C,4L DEL:4L DFN:4C,4L DIV:4C,4L DT:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L I:4C,4L IFRAME:4L INS:4L KBD:4C,4L LABEL:4C,4L LEGEND:4L LI:4C,4L NOSCRIPT:4L OBJECT:4C,4L P:4C,4L PRE:4C Q:4C,4L S:4C,4L SAMP:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L SUB:4C,4L SUP:4C,4L TD:4C,4L TEXTFLOW:4C TH:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L contains: #PCDATA:4C,4L A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4C,4L B:4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BR:4C,4L BUTTON:4L CENTER:4C,4L CITE:4C,4L CODE:4C,4L DFN:4C,4L DIR:4C,4L DIV:4C,4L DL:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L HR:4C,4L I:4C,4L IFRAME:4L IMG:4C,4L INPUT:4C,4L ISINDEX:4C,4L KBD:4C,4L LABEL:4C,4L LISTING:4C MAP:4C,4L MENU:4C,4L NOFRAMES:4L NOSCRIPT:4L OBJECT:4C,4L OL:4C,4L P:4C,4L PARAM:4C,4L PRE:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L STYLE:4C SUB:4C,4L SUP:4C,4L TABLE:4C,4L TEXTAREA:4C,4L TT:4C,4L U:4C,4L UL:4C,4L VAR:4C,4L XMP:4C <OF> required:3 ... </OF> optional:3 contained in: ROOT:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <OL> ... </OL> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: LH:3 LI <OPTGROUP> required:4L ... </OPTGROUP> required:4L contained in: OPTGROUP:4L SELECT:4L contains: OPTGROUP:4L OPTION:4L <OPTION> ... </OPTION> optional contained in: OPTGROUP:4L SELECT contains: #PCDATA <OVER> required:3 contained in: BOX:3 contains: EMPTY:3 <OVERLAY> required:3 contained in: FIG:3 contains: EMPTY:3 <P> ... </P> optional contained in: ADDRESS APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CENTER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUTTON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <PARAM> required:3.2,4C,4L contained in: APPLET:3.2,4C,4L OBJECT:4C,4L contains: EMPTY:3.2,4C,4L <PERSON> required:3 ... </PERSON> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCKQUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 PRE:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: #PCDATA:3 A:3 ABBREV:3 ACRONYM:3 AU:3 B:3 BIG:3 BR:3 CITE:3 CODE:3 DEL:3 DFN:3 EM:3 I:3 IMG:3 INS:3 KBD:3 LANG:3 MATH:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TAB:3 TT:3 U:3 VAR:3 <PLAINTEXT> required:2,3,3.2,4C,M ... </PLAINTEXT> optional:2,3,3.2,4C,M (deprecated) contained in: HTML:2,3.2,4C,M contains: CDATA:2,3,3.2,4C,M NB: The meaning of this tag is aberrant, in that the closing tag is not supposed to be present, even though the grammar says that it is optional: the environment instead terminates at end-of-file. Browsers differ in their handling of the end tag: some display it as ordinary text, and others terminate the environment. <PRE> ... </PRE> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CEN- TER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C AU:3 B BASEFONT:3.2,4C BDO:4C,4L BLINK:M BR BUTTON:4L CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:M HR:2,M I IFRAME:4L INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L OBJECT:4C PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR cannot contain: APPLET:4L BASEFONT:4L BIG:3,3.2,4C,4L FONT:3.2,4C,4L IMG:3,3.2,4C,4L MATH:3 OBJECT:4L SMALL:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 <Q> required:3,4C,4L ... </Q> required:3,4C,4L contained in: A:3,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,4C,4L APPLET:4L AU:3 B:3,4C,4L BDO:4C,4L BIG:3,4C,4L BLOCKQUOTE:3,4C,4L BODY:3,4C,4L BQ:3 BUTTON:4L CAPTION:3,4C,4L CENTER:4C,4L CITE:3,4C,4L CODE:3,4C,4L CREDIT:3 DD:3,4C,4L DEL:3,4L DFN:3,4C,4L DIV:3,4C,4L DT:3,4C,4L EM:3,4C,4L FIELDSET:4C,4L FIG:3 FONT:4C,4L FORM:3,4C,4L H1:3,4C,4L H2:3,4C,4L H3:3,4C,4L H4:3,4C,4L H5:3,4C,4L H6:3,4C,4L I:3,4C,4L IFRAME:4L INS:3,4L KBD:3,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,4C,4L PERSON:3 PRE:3,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,4C,4L SMALL:3,4C,4L SPAN:4C,4L STRIKE:4L STRONG:3,4C,4L SUB:3,4C,4L SUP:3,4C,4L TD:3,4C,4L TEXTFLOW:4C TH:3,4C,4L TT:3,4C,4L U:3,4C,4L VAR:3,4C,4L contains: #PCDATA:3,4C,4L A:3,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 AP- PLET:4C,4L AU:3 B:3,4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:3,4C,4L BR:3,4C,4L BUTTON:4L CITE:3,4C,4L CODE:3,4C,4L DEL:3 DFN:3,4C,4L EM:3,4C,4L FONT:4C,4L I:3,4C,4L IFRAME:4L IMG:3,4C,4L INPUT:4C,4L INS:3 KBD:3,4C,4L LABEL:4C,4L LANG:3 MAP:4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:3,4C,4L SPAN:4C,4L STRIKE:4L STRONG:3,4C,4L STYLE:4C SUB:3,4C,4L SUP:3,4C,4L TAB:3 TEXTAREA:4C,4L TT:3,4C,4L U:3,4C,4L VAR:3,4C,4L <RIGHT> required:3 contained in: BOX:3 contains: EMPTY:3 <ROOT> required:3 ... </ROOT> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 OF:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <ROW> required:3 ... </ROW> optional:3 contained in: ARRAY:3 contains: ITEM:3 <S> required:3,4C,4L ... </S> required:3,4C,4L contained in: A:3,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,4C,4L APPLET:4L AU:3 B:3,4C,4L BDO:4C,4L BIG:3,4C,4L BLOCKQUOTE:3,4C,4L BODY:3,4C,4L BQ:3 BUTTON:4L CAPTION:3,4C,4L CENTER:4C,4L CITE:3,4C,4L CODE:3,4C,4L CREDIT:3 DD:3,4C,4L DEL:3,4L DFN:3,4C,4L DIV:3,4C,4L DT:3,4C,4L EM:3,4C,4L FIELDSET:4C,4L FIG:3 FONT:4C,4L FORM:3,4C,4L H1:3,4C,4L H2:3,4C,4L H3:3,4C,4L H4:3,4C,4L H5:3,4C,4L H6:3,4C,4L I:3,4C,4L IFRAME:4L INS:3,4L KBD:3,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,4C,4L PERSON:3 PRE:3,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,4C,4L SMALL:3,4C,4L SPAN:4C,4L STRIKE:4L STRONG:3,4C,4L SUB:3,4C,4L SUP:3,4C,4L TD:3,4C,4L TEXTFLOW:4C TH:3,4C,4L TT:3,4C,4L U:3,4C,4L VAR:3,4C,4L contains: #PCDATA:3,4C,4L A:3,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 AP- PLET:4C,4L AU:3 B:3,4C,4L BASEFONT:4C,4L BDO:4C,4L BIG:3,4C,4L BR:3,4C,4L BUTTON:4L CITE:3,4C,4L CODE:3,4C,4L DEL:3 DFN:3,4C,4L EM:3,4C,4L FONT:4C,4L I:3,4C,4L IFRAME:4L IMG:3,4C,4L INPUT:4C,4L INS:3 KBD:3,4C,4L LABEL:4C,4L LANG:3 MAP:4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:3,4C,4L SPAN:4C,4L STRIKE:4L STRONG:3,4C,4L STYLE:4C SUB:3,4C,4L SUP:3,4C,4L TAB:3 TEXTAREA:4C,4L TT:3,4C,4L U:3,4C,4L VAR:3,4C,4L <SAMP> ... </SAMP> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LA- BEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OB- JECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUT- TON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <SCRIPT> required:3.2,4C,4L ... </SCRIPT> required:3.2,4C,4L contained in: A:3.2,4C,4L ABBR:4L ADDRESS:3.2,4C,4L APPLET:3.2,4L B:3.2,4C,4L BDO:4C,4L BIG:3.2,4C,4L BLOCKQUOTE:3.2,4C,4L BODY:3.2,4C,4L BUTTON:4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L CITE:3.2,4C,4L CODE:3.2,4C,4L DD:3.2,4C,4L DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L EM:3.2,4C,4L FIELDSET:4C,4L FONT:3.2,4C,4L FORM:3.2,4C,4L H1:3.2,4C,4L H2:3.2,4C,4L H3:3.2,4C,4L H4:3.2,4C,4L H5:3.2,4C,4L H6:3.2,4C,4L HEAD:3.2,4C,4L I:3.2,4C,4L IFRAME:4L INS:4L KBD:3.2,4C,4L LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L PRE:3.2,4C,4L Q:4C,4L S:4C,4L SAMP:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L U:3.2,4C,4L VAR:3.2,4C,4L contains: CDATA:3.2,4C,4L <SELECT> ... </SELECT> contained in: A:3.2,4C,4L ABBR:4L ADDRESS:3.2,4C,4L APPLET:3.2,4L B:3.2,4C,4L BDO:4C,4L BIG:3.2,4C,4L BLOCKQUOTE:3.2,4C,4L BODY:3.2,4C,4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L CITE:3.2,4C,4L CODE:3.2,4C,4L DD:3.2,4C,4L DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L EM:3.2,4C,4L FIELDSET:4C,4L FONT:3.2,4C,4L FORM H1:3.2,4C,4L H2:3.2,4C,4L H3:3.2,4C,4L H4:3.2,4C,4L H5:3.2,4C,4L H6:3.2,4C,4L I:3.2,4C,4L IFRAME:4L INS:4L KBD:3.2,4C,4L LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L PRE:3.2,4C,4L Q:4C,4L S:4C,4L SAMP:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L U:3.2,4C,4L VAR:3.2,4C,4L contains: OPTGROUP:4L OPTION cannot contain: INPUT:3 SELECT:3 TEXTAREA:3 <SMALL> required:3,3.2,4C,4L ... </SMALL> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 AD- DRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L INS:3,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,3.2,4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SE- LECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <SPAN> required:4C,4L ... </SPAN> required:4C,4L contained in: A:4C,4L ABBR:4L ADDRESS:4C,4L APPLET:4L B:4C,4L BDO:4C,4L BIG:4C,4L BLOCKQUOTE:4C,4L BODY:4C,4L BUTTON:4L CAP- TION:4C,4L CENTER:4C,4L CITE:4C,4L CODE:4C,4L DD:4C,4L DEL:4L DFN:4C,4L DIV:4C,4L DT:4C,4L EM:4C,4L FIELDSET:4C,4L FONT:4C,4L FORM:4C,4L H1:4C,4L H2:4C,4L H3:4C,4L H4:4C,4L H5:4C,4L H6:4C,4L I:4C,4L IFRAME:4L INS:4L KBD:4C,4L LABEL:4C,4L LEGEND:4L LI:4C,4L NOSCRIPT:4L OBJECT:4C,4L P:4C,4L PRE:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L SUB:4C,4L SUP:4C,4L TD:4C,4L TEXTFLOW:4C TH:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L contains: #PCDATA:4C,4L A:4C,4L ABBR:4L APPLET:4C,4L B:4C,4L BASE- FONT:4C,4L BDO:4C,4L BIG:4C,4L BR:4C,4L BUTTON:4L CITE:4C,4L CODE:4C,4L DFN:4C,4L EM:4C,4L FONT:4C,4L I:4C,4L IFRAME:4L IMG:4C,4L INPUT:4C,4L KBD:4C,4L LABEL:4C,4L MAP:4C,4L OBJECT:4C,4L Q:4C,4L S:4C,4L SAMP:4C,4L SCRIPT:4C,4L SELECT:4C,4L SMALL:4C,4L SPAN:4C,4L STRIKE:4L STRONG:4C,4L STYLE:4C SUB:4C,4L SUP:4C,4L TEXTAREA:4C,4L TT:4C,4L U:4C,4L VAR:4C,4L <SQRT> required:3 ... </SQRT> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <STRIKE> required:3.2,4L ... </STRIKE> required:3.2,4L contained in: A:3.2,4L ABBR:4L ADDRESS:3.2,4L APPLET:3.2,4L B:3.2,4L BDO:4L BIG:3.2,4L BLOCKQUOTE:3.2,4L BODY:3.2,4L BUTTON:4L CAP- TION:3.2,4L CENTER:3.2,4L CITE:3.2,4L CODE:3.2,4L DD:3.2,4L DEL:4L DFN:3.2,4L DIV:3.2,4L DT:3.2,4L EM:3.2,4L FIELDSET:4L FONT:3.2,4L FORM:3.2,4L H1:3.2,4L H2:3.2,4L H3:3.2,4L H4:3.2,4L H5:3.2,4L H6:3.2,4L I:3.2,4L IFRAME:4L INS:4L KBD:3.2,4L LABEL:4L LEGEND:4L LI:3.2,4L NOSCRIPT:4L OBJECT:4L P:3.2,4L PRE:3.2,4L Q:4L S:4L SAMP:3.2,4L SMALL:3.2,4L SPAN:4L STRIKE:3.2,4L STRONG:3.2,4L SUB:3.2,4L SUP:3.2,4L TD:3.2,4L TH:3.2,4L TT:3.2,4L U:3.2,4L VAR:3.2,4L contains: #PCDATA:3.2,4L A:3.2,4L ABBR:4L APPLET:3.2,4L B:3.2,4L BASEFONT:3.2,4L BDO:4L BIG:3.2,4L BR:3.2,4L BUTTON:4L CITE:3.2,4L CODE:3.2,4L DFN:3.2,4L EM:3.2,4L FONT:3.2,4L I:3.2,4L IFRAME:4L IMG:3.2,4L INPUT:3.2,4L KBD:3.2,4L LABEL:4L MAP:3.2,4L OBJECT:4L Q:4L S:4L SAMP:3.2,4L SCRIPT:3.2,4L SELECT:3.2,4L SMALL:3.2,4L SPAN:4L STRIKE:3.2,4L STRONG:3.2,4L SUB:3.2,4L SUP:3.2,4L TEXTAREA:3.2,4L TT:3.2,4L U:3.2,4L VAR:3.2,4L <STRONG> ... </STRONG> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LA- BEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OB- JECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUT- TON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <STYLE> required:3,3.2,4C,4L ... </STYLE> required:3.2,4C,4L optional:3 contained in: A:4C ADDRESS:4C B:4C BDO:4C BIG:4C BLOCKQUOTE:4C BODY:4C CAPTION:4C CENTER:4C CITE:4C CODE:4C DD:4C DFN:4C DIV:4C DT:4C EM:4C FIELDSET:4C FONT:4C FORM:4C H1:4C H2:4C H3:4C H4:4C H5:4C H6:4C HEAD:3,3.2,4C,4L I:4C KBD:4C LABEL:4C LI:4C OBJECT:4C P:4C PRE:4C Q:4C S:4C SAMP:4C SMALL:4C SPAN:4C STRONG:4C SUB:4C SUP:4C TD:4C TEXTFLOW:4C TH:4C TT:4C U:4C VAR:4C contains: #PCDATA:3 CDATA:3.2,4C,4L <SUB> required:3,3.2,4C,4L ... </SUB> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ABOVE:3 ACRONYM:3 AD- DRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BAR:3 BDO:4C,4L BELOW:3 BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BOX:3 BQ:3 BT:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DDOT:3 DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DOT:3 DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L HAT:3 I:3,3.2,4C,4L IFRAME:4L INS:3,4L ITEM:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L MATH:3 NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OF:3 P:3,3.2,4C,4L PERSON:3 Q:3,4C,4L ROOT:3 S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L SQRT:3 STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L T:3 TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TILDE:3 TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L VEC:3 contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SE- LECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <SUP> required:3,3.2,4C,4L ... </SUP> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ABOVE:3 ACRONYM:3 AD- DRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BAR:3 BDO:4C,4L BELOW:3 BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BOX:3 BQ:3 BT:3 BUTTON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DDOT:3 DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DOT:3 DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L HAT:3 I:3,3.2,4C,4L IFRAME:4L INS:3,4L ITEM:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L MATH:3 NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OF:3 P:3,3.2,4C,4L PERSON:3 Q:3,4C,4L ROOT:3 S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L SQRT:3 STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L T:3 TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TILDE:3 TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L VEC:3 contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SE- LECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <T> required:3 ... </T> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <TAB> required:3 contained in: A:3 ABBREV:3 ACRONYM:3 ADDRESS:3 AU:3 B:3 BIG:3 BLOCK- QUOTE:3 BODY:3 BQ:3 CAPTION:3 CITE:3 CODE:3 CREDIT:3 DD:3 DEL:3 DFN:3 DIV:3 DT:3 EM:3 FIG:3 FORM:3 H1:3 H2:3 H3:3 H4:3 H5:3 H6:3 I:3 INS:3 KBD:3 LANG:3 LH:3 LI:3 NOTE:3 P:3 PERSON:3 Q:3 S:3 SAMP:3 SMALL:3 STRONG:3 SUB:3 SUP:3 TD:3 TH:3 TT:3 U:3 VAR:3 contains: EMPTY:3 <TABLE> required:3,3.2,4C,4L ... </TABLE> required:3,3.2,4C,4L contained in: APPLET:4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUTTON:4L CENTER:3.2,4C,4L DD:3,3.2,4C,4L DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM:3,3.2,4C,4L IFRAME:4L INS:4L LI:3,3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: CAPTION:3,3.2,4C,4L COL:4C,4L COLGROUP:4C,4L TBODY:4C,4L TFOOT:4C,4L THEAD:4C,4L TR:3,3.2 <TBODY> optional:4C,4L ... </TBODY> optional:4C,4L contained in: TABLE:4C,4L contains: TR:4C,4L <TD> required:3,3.2,4C,4L ... </TD> optional:3,3.2,4C,4L contained in: TR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,3.2,4C,4L APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BQ:3 BR:3,3.2,4C,4L BUTTON:4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L DIR:3,3.2,4C,4L DIV:3,3.2,4C,4L DL:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L HR:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L IN- PUT:3.2,4C,4L INS:3 ISINDEX:3,3.2,4C,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LISTING:3,3.2,4C MAP:3.2,4C,4L MATH:3 MENU:3,3.2,4C,4L NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL:3,3.2,4C,4L P:3,3.2,4C,4L PERSON:3 PRE:3,3.2,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L UL:3,3.2,4C,4L VAR:3,3.2,4C,4L XMP:3,3.2,4C <TEXTAREA> ... </TEXTAREA> contained in: A:3.2,4C,4L ABBR:4L ADDRESS:3.2,4C,4L APPLET:3.2,4L B:3.2,4C,4L BDO:4C,4L BIG:3.2,4C,4L BLOCKQUOTE:3.2,4C,4L BODY:3.2,4C,4L CAPTION:3.2,4C,4L CENTER:3.2,4C,4L CITE:3.2,4C,4L CODE:3.2,4C,4L DD:3.2,4C,4L DEL:4L DFN:3.2,4C,4L DIV:3.2,4C,4L DT:3.2,4C,4L EM:3.2,4C,4L FIELDSET:4C,4L FONT:3.2,4C,4L FORM H1:3.2,4C,4L H2:3.2,4C,4L H3:3.2,4C,4L H4:3.2,4C,4L H5:3.2,4C,4L H6:3.2,4C,4L I:3.2,4C,4L IFRAME:4L INS:4L KBD:3.2,4C,4L LABEL:4C,4L LEGEND:4L LI:3.2,4C,4L NOSCRIPT:4L OBJECT:4C,4L P:3.2,4C,4L PRE:3.2,4C,4L Q:4C,4L S:4C,4L SAMP:3.2,4C,4L SMALL:3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3.2,4C,4L SUB:3.2,4C,4L SUP:3.2,4C,4L TD:3.2,4C,4L TEXTFLOW:4C TH:3.2,4C,4L TT:3.2,4C,4L U:3.2,4C,4L VAR:3.2,4C,4L contains: #PCDATA cannot contain: INPUT:3 SELECT:3 TEXTAREA:3 <TEXTFLOW> optional:4C ... </TEXTFLOW> optional:4C contained in: APPLET:4C contains: #PCDATA:4C A:4C APPLET:4C B:4C BASEFONT:4C BDO:4C BIG:4C BR:4C CITE:4C CODE:4C DFN:4C EM:4C FONT:4C I:4C IMG:4C INPUT:4C KBD:4C LABEL:4C MAP:4C OBJECT:4C Q:4C S:4C SAMP:4C SCRIPT:4C SE- LECT:4C SMALL:4C SPAN:4C STRONG:4C STYLE:4C SUB:4C SUP:4C TEXTAREA:4C TT:4C U:4C VAR:4C <TFOOT> required:4C,4L ... </TFOOT> optional:4C,4L contained in: TABLE:4C,4L contains: TR:4C,4L <TH> required:3,3.2,4C,4L ... </TH> optional:3,3.2,4C,4L contained in: TR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS:3,3.2,4C,4L APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BQ:3 BR:3,3.2,4C,4L BUTTON:4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L DIR:3,3.2,4C,4L DIV:3,3.2,4C,4L DL:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L HR:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L IN- PUT:3.2,4C,4L INS:3 ISINDEX:3,3.2,4C,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LISTING:3,3.2,4C MAP:3.2,4C,4L MATH:3 MENU:3,3.2,4C,4L NOFRAMES:4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L OL:3,3.2,4C,4L P:3,3.2,4C,4L PERSON:3 PRE:3,3.2,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TABLE:3,3.2,4C,4L TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L UL:3,3.2,4C,4L VAR:3,3.2,4C,4L XMP:3,3.2,4C <THEAD> required:4C,4L ... </THEAD> optional:4C,4L contained in: TABLE:4C,4L contains: TR:4C,4L <TILDE> required:3 ... </TILDE> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <TITLE> ... </TITLE> contained in: HEAD contains: #PCDATA cannot contain: LINK:3.2,4C,4L META:3.2,4C,4L SCRIPT:3.2,4C,4L STYLE:3.2,4C,4L <TR> required:3,3.2,4C,4L ... </TR> optional:3,3.2,4C,4L contained in: TABLE:3,3.2 TBODY:4C,4L TFOOT:4C,4L THEAD:4C,4L contains: TD:3,3.2,4C,4L TH:3,3.2,4C,4L <TT> ... </TT> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LA- BEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OB- JECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUT- TON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <U> required:3,3.2,4C,4L ... </U> required:3,3.2,4C,4L contained in: A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 AD- DRESS:3,3.2,4C,4L APPLET:3.2,4L AU:3 B:3,3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BLOCKQUOTE:3,3.2,4C,4L BODY:3,3.2,4C,4L BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L CREDIT:3 DD:3,3.2,4C,4L DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT:3,3.2,4C,4L EM:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L FORM:3,3.2,4C,4L H1:3,3.2,4C,4L H2:3,3.2,4C,4L H3:3,3.2,4C,4L H4:3,3.2,4C,4L H5:3,3.2,4C,4L H6:3,3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L INS:3,4L KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LEGEND:4L LH:3 LI:3,3.2,4C,4L NOSCRIPT:4L NOTE:3 OBJECT:4C,4L P:3,3.2,4C,4L PERSON:3 PRE:3,3.2,4C,4L Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B:3,3.2,4C,4L BASEFONT:3.2,4C,4L BDO:4C,4L BIG:3,3.2,4C,4L BR:3,3.2,4C,4L BUTTON:4L CITE:3,3.2,4C,4L CODE:3,3.2,4C,4L DEL:3 DFN:3,3.2,4C,4L EM:3,3.2,4C,4L FONT:3.2,4C,4L I:3,3.2,4C,4L IFRAME:4L IMG:3,3.2,4C,4L INPUT:3.2,4C,4L INS:3 KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP:3,3.2,4C,4L SCRIPT:3.2,4C,4L SE- LECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG:3,3.2,4C,4L STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT:3,3.2,4C,4L U:3,3.2,4C,4L VAR:3,3.2,4C,4L <UL> ... </UL> contained in: APPLET:4L BLOCKQUOTE BODY BQ:3 BUTTON:4L CEN- TER:3.2,4C,4L,M DD DEL:4L DIV:3,3.2,4C,4L FIELDSET:4C,4L FIG:3 FORM IFRAME:4L INS:4L LI NOSCRIPT:4L NOTE:3 OBJECT:4C,4L TD:3,3.2,4C,4L TH:3,3.2,4C,4L contains: LH:3 LI <VAR> ... </VAR> contained in: A ABBR:4L ABBREV:3 ACRONYM:3 ADDRESS APPLET:3.2,4L AU:3 B BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BLOCKQUOTE BODY BQ:3 BUT- TON:4L CAPTION:3,3.2,4C,4L CENTER:3.2,4C,4L,M CITE CODE CREDIT:3 DD DEL:3,4L DFN:3,3.2,4C,4L DIV:3,3.2,4C,4L DT EM FIELDSET:4C,4L FIG:3 FONT:3.2,4C,4L,M FORM H1 H2 H3 H4 H5 H6 I IFRAME:4L INS:3,4L KBD LA- BEL:4C,4L LANG:3 LEGEND:4L LH:3 LI NOBR:M NOSCRIPT:4L NOTE:3 OB- JECT:4C,4L P PERSON:3 PRE Q:3,4C,4L S:3,4C,4L SAMP SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TD:3,3.2,4C,4L TEXTFLOW:4C TH:3,3.2,4C,4L TT U:3,3.2,4C,4L VAR contains: #PCDATA A ABBR:4L ABBREV:3 ACRONYM:3 APPLET:3.2,4C,4L AU:3 B BASEFONT:3.2,4C,4L,M BDO:4C,4L BIG:3,3.2,4C,4L BLINK:M BR BUT- TON:4L CENTER:M CITE CODE DEL:3 DFN:3,3.2,4C,4L EM FONT:3.2,4C,4L,M I IFRAME:4L IMG INPUT:3.2,4C,4L INS:3 KBD LABEL:4C,4L LANG:3 MAP:3.2,4C,4L MATH:3 NOBR:M OBJECT:4C,4L PERSON:3 Q:3,4C,4L S:3,4C,4L SAMP SCRIPT:3.2,4C,4L SELECT:3.2,4C,4L SMALL:3,3.2,4C,4L SPAN:4C,4L STRIKE:3.2,4L STRONG STYLE:4C SUB:3,3.2,4C,4L SUP:3,3.2,4C,4L TAB:3 TEXTAREA:3.2,4C,4L TT U:3,3.2,4C,4L VAR WBR:M <VEC> required:3 ... </VEC> required:3 contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ITEM:3 MATH:3 OF:3 ROOT:3 SQRT:3 T:3 TILDE:3 VEC:3 contains: #PCDATA:3 ABOVE:3 ARRAY:3 B:3 BAR:3 BELOW:3 BOX:3 BT:3 DDOT:3 DOT:3 HAT:3 ROOT:3 SQRT:3 SUB:3 SUP:3 T:3 TILDE:3 VEC:3 <WBR> required:M contained in: A:M ADDRESS:M B:M BLINK:M BLOCKQUOTE:M BODY:M CENTER:M CITE:M CODE:M DD:M DT:M EM:M FONT:M FORM:M H1:M H2:M H3:M H4:M H5:M H6:M I:M KBD:M LI:M NOBR:M P:M SAMP:M STRONG:M TT:M VAR:M contains: EMPTY:M <XMP> required:2,3,3.2,4C,M ... </XMP> required:2,3,3.2,4C,M (deprecated) contained in: BLOCKQUOTE:2,3,3.2,4C,M BODY:2,3,3.2,4C,M BQ:3 CEN- TER:3.2,4C,M DD:2,3,3.2,4C,M DIV:3,3.2,4C FIELDSET:4C FIG:3 FORM:2,3,3.2,4C,M LI:2,3,3.2,4C,M NOTE:3 OBJECT:4C TD:3,3.2,4C TH:3,3.2,4C contains: CDATA:2,3,3.2,4C,M PRETTYPRINTER LIMITATIONS Like LaTeX, Lisp, PostScript, and TeX, SGML is an extensible language. In particular, at run time, it is possible to redefine the syntax and seman- tics of all lexical elements, including the base character set, the charac- ters that may appear in identifiers, and the special characters that de- limit tags or strings. In SGML, this is conventionally done in SGML declaration files for syntax definitions, and in DTD files, which are analogous to LaTeX style files. Low-level typesetting commands of the flavor ``select a 14-point Lucida- BoldItalic font'', ``skip down vertically 6 picas'', and ``draw a horizon- tal rule 3 ems long'' are notably absent. SGML documents are expected to use only high-level markup commands, leaving the visual appearance entirely up to the DTD specification, and the formatting software. Unlike LaTeX and TeX, SGML is not a typesetting system. It is only a gram- mar for a standard markup language, and it is left to SGML software imple- mentors to write DTDs, and to provide for translation of SGML documents to specific document formatting, typesetting, or word processing systems. In this respect, SGML is similar to the RTF (Rich Text Format) supported by many popular word processors, in that it can serve as an intermediate lan- guage for electronic document exchange; several language translators be- tween SGML and other text representations are mentioned in the SEE ALSO section below. Regrettably, there is wide variation in the capabilities and document models of current text formatting systems, so such transla- tions are usually rough approximations that may require substantial hand patching to make them truly satisfactory. HTML is a modest subset of SGML, with tag names apparently chosen from SGML, the Free Software Foundation's TeXinfo system (which in turn is mod- eled on the earlier Scribe document formatting system), and occasionally, also from LaTeX. html-pretty is written in this spirit: it knows about the meaning and typi- cal use of all standard HTML tags, but nothing about other SGML DTDs. How- ever, the style-file facility makes it possible to prepare formatting rules for any SGML DTD, extending the applicability of html-pretty to the entire world of SGML, provided a tag normalizer such as sgmlnorm(1) or spam(1) is available to supply omitted tags, and expand abbreviated ones. However, since SGML tag names depend on the specific DTD, and DTDs tend to be pro- prietary, html-pretty is not packaged with pre-written style files for SGML. Contributions of suitable style files for public SGML DTDs, together with those DTDs, are hereby solicited, and they may be included in future re- leases of html-pretty. PRETTYPRINTER IMPLEMENTATION LIMITS As with most computer software, there are certain limitations in html- pretty on object sizes, imposed by fixed array dimensions or addressing limits of the computer hardware and operating system. Here are the minimum values that all html-pretty implementations must provide in order to con- form to this documentation; implementations on some systems may have much more generous limits. 2048 characters in single words, tag names, and filenames (this must be at least as large as the LITLEN limit set in the SGML parser dec- laration file html.decl); 100 levels of list and environment nesting (this must be at least as large as the TAGLVL limit set in the SGML parser declaration file html.decl); 6 simultaneously open files (stdin, stderr, and stdout, plus the style catalog file, and two style files, allowing at least two lev- els of style file nesting). These are ample for any realistic document: they support the longest legal file paths in all major current operating systems, World-Wide Web URLs, and HTML tags named after 58-letter Welsh towns like Llanfairpwllgwyngyllgoger- ychwyrndrobwllllantysiliogogogoch, yet will still work on the smallest per- sonal computer operating systems. There is no limit on the size of input or output files and lines, other than that imposed by physical storage limits of the host file system and the computer address space. SEE ALSO amaya(1), arena(1), chimera(1), emacs(1), expand(1), grail(1), hotjava(1), html-check(1), html-ncheck(1), html-norm(1), html-spam(1), html2latex(1), htmlchek(1), jde(1), latex(1), latex2html(1), latex2rtf(1), lisp(1), lynx(1), man2html(1), netscape(1), nsgmls(1), panorama(1), rman(1), Roset- taMan(1), rtf2LaTeX(1), rtf2html(1), rtf2tex(1), rtflatex(1), scribe(1), sgmlnorm(1), sgmls(1), spam(1), tex(1), tex-pretty(1), texi2html(1), texi2roff(1), texinfo(1), unexpand(1), xmosaic(1). The ISO 8879 SGML Standard is contained in the book Charles F. Goldfarb and Yuri Rubinsky The SGML Handbook Cambridge University Press 1990 xxiv + 663 pp. ISBN 0-19-853737-9 LCCN Z286.E43 G64 1990 That book serves as the `scriptures' of SGML; it even has long blue ribbons attached to serve as page marks! References to nearly 300 books and over 1000 other publications about SGML can be found at these World-Wide Web locations: ftp://ftp.math.utah.edu/pub/tex/bib/index.html#sgml http://sgml.sgmlopen.org/ http://www.sil.org/sgml/sgml.html http://www.falch.no/people/pepper/sgmltool/ SGML software repositories are available at: http://sgml.sgmlopen.org/ ftp://ftp.math.utah.edu/pub/sgml The latter has source and binary distributions for several of the SGML tools mentioned at the start of this section, including html-check(1), html-ncheck(1), html-pretty, html-spam(1), man2html(1), nsgmls(1), sgml- norm(1), sgmls(1), and spam(1). AUTHOR Nelson H. F. Beebe, Ph.D. Center for Scientific Computing University of Utah Department of Mathematics, 105 JWB 155 S 1400 E RM 233 Salt Lake City, UT 84112-0090 Tel: +1 801 581 5254 FAX: +1 801 581 4148 Email: beebe@math.utah.edu, beebe@acm.org, beebe@ieee.org (Internet) WWW URL: http://www.math.utah.edu/~beebe AVAILABILITY html-pretty is freely available; its master distribution can be found at ftp://ftp.math.utah.edu/pub/sgml/ in the file htmlpty-x.yy.tar.gz where x.yy is the current version. Other distribution formats are usually available in the same location. Several other SGML and HTML tools are available in that same directory. That site is mirrored to several other Internet archives, so you may also be able to find it elsewhere on the Internet; try searching for the string htmlpty at one or more of the popular Web search sites, such as http://altavista.digital.com/ http://www.hotbot.com/ http://www.stpt.com/ http://www.yahoo.com/ Version 1.00 04 December 1997 HTML-PRETTY(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FORMATTING CONVENTIONS | STYLE FILES | CATALOG DIRECTORY | COMMENTS IN HTML AND SGML | HTML GRAMMAR CONSTRAINTS | PRETTYPRINTER LIMITATIONS | PRETTYPRINTER IMPLEMENTATION LIMITS | SEE ALSO | AUTHOR | AVAILABILITY
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