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NAMEhtml-pretty - prettyprint HTML and SGML filesSYNOPSIShtml-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 ]DESCRIPTIONhtml-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, standardizing 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 character 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 xmosaic(1). The WWW idea began in late 1992, and because viewer programs support display of text, line drawings, color raster images, hypertext links, and uniform access to several Internet services, including file transfer, in the first two years, the number of WWW servers grew from zero to several hundred thousand, and some of the more popular sites receive up to twenty-five million accesses a day from all over the Internet. Consequently, many Internet 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 prettyprinted output, than in the input. SGML (Standard General Markup Language, ISO 8879), and its particular document 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 implemented 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 http://www.w3.org/MarkUp/Cougar/ http://www.w3.org/TR/WD-html40/ http://www.w3.org/TR/PR-html40/ http://www.w3.org/TR/WD-html40/translations.html http://www.w3.org/TR/PR-html40-971107/translations.html <!-- -*-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> OPTIONSCommand-line options affect all following filenames. Option values are always 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.
: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
font:A,MEDIUM font=A,MEDIUM 'font = A MEDIUM' 'font : A,,,,MEDIUM'
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
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
FORMATTING CONVENTIONShtml-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 -extend-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, listing their default tag members, and briefly sketching how the tags are formatted. 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 deletion to a human.Recognized HTML TagsHTML 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, TITLE, 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> HTML Tag OmissionThe 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: COLGROUP, 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 versions, it must not have an end tag. In version 3.0, STYLE takes an optional end tag, but in succeeding versions, it must have an end tag. Supporting the tag-omission feature requires the ability to parse a complete 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 automatically 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 human judgment may be called for. See the HTML GRAMMAR CONSTRAINTS section below for further details.Style Class: bodyThe 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 environment, and one level inside the HTML environment. html-pretty will supply this environment if needed, unless the -brief option has suppressed it.Style Class: commentShort 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 between the final "--" and the closing angle bracket will be eliminated, when possible.Style Class: doctypeThe 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 section below.Style Class: fontThese 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: headThis HTML tag occurs in begin/end pairs, which are prettyprinted on separate 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 environment, and before the BODY environment. html-pretty will supply this environment if needed, unless the -brief option has suppressed it.Style Class: htmlThis HTML tag occurs in begin/end pairs, which are prettyprinted on separate 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 option has suppressed it.Style Class: inlineTags 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 allowed 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 environments, never raises unknown-tag warnings, and does not end a paragraph.Style Class: line-breakThis HTML tag marks an explicit line break, and has no matching end tag; preceding space is deleted, and a newline follows: BR.Style Class: linkThis 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 input stream.Style Class: listThese 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-headerThis 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-itemThese 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-declarationThe 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: mathThese HTML tag names occur only inside a MATH environment, and appear inline, without end tags, and without affecting indentation: ATOP, CHOOSE, LEFT, OF, OVER, RIGHT, and TAB.Style Class: math-pairThese 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: pairThe following HTML tag names occur in begin/end pairs (<TAG>and</TAG>), often 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: paragraphThis HTML tag occurs in begin/end pairs, which are prettyprinted on separate lines with enclosing text indented one level: P. However, paragraphing is tracked, empty paragraphs are discarded, and when new tags are encountered which are known to be illegal inside a paragraph, any open paragraph 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: plaintextThe 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: sectionThese HTML tags occur in begin/end pairs, which are prettyprinted on separate 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: shortThis 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 environment, and consequently, html-pretty will automatically end any open HEAD environment, and start a BODY environment, if needed.Style Class: standaloneThese 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 consequently, html-pretty will automatically end any open HEAD and P environments, and start a BODY environment, if needed.Style Class: standalone-nocheckThese 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: titleThis HTML tag occurs in begin/end pairs, which are prettyprinted on separate 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 environment if needed, unless the -brief option has suppressed it, and will warn about multiple occurrences.Style Class: verbatimThese HTML tags appear in begin/end pairs, delimit preformatted, or verbatim, 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 appeared in the input stream.Style Class: verbatim-nocheckThese HTML tags appear in begin/end pairs, delimit preformatted, or verbatim, 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, ...) languages, there is no reasonable way for html-pretty to reformat their contents, so they are included in this style class to prevent such reformatting.STYLE FILESIn 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 sgmlpretty.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 extension, then keeping the last consecutive string of characters that are letters, 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 style-class : TAG1 TAG2 ... TAG : TAG1 TAG2 ... relationship[TAG] : TAG1 TAG2 ... -option -option -option ... -option value -option value -option value ... CannotContain[TITLE] : LINK META SCRIPT STYLE ContainedIn[LH] : DL OL UL % 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" CATALOG DIRECTORYThe 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 grammar option, and have html-pretty automatically find the style files. Thus, when the -grammar-level option is used, html-pretty looks for a catalog directory 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/local/bin/html-pretty, the catalog directory is /usr/local/share/lib/html-pretty. [Conventionally, on UNIX systems, directories in the share directory tree are shared across multiple O/S releases and vendor architectures.] 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 grammar level, and a corresponding filename in that directory. As with style files, comments run from percent (%) to end-of-line, but there is no support 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 lettercase, 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 SGMLThe 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 declaration 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 after that second pair is non-comment text to be parsed. However, additional comments can appear, provided that they are surrounded by -- pairs. Eventually, the markup declaration is ended by an mdc command, although whitespace may follow the last comment. Thus,<!--one-- --two-- --three--> <!-- one -- -- two -- -- three -- > <!-- one -- -- two -- -- three -- > <! --one-- --two-- --three-- > <!-- one -- two -- three -- > <!-- one -- -- two -- - - three - - > <!-- <!-- --> --> <!-- <!-- --> <!-- --> --> <!-- one <!-- two --> three --> <!-- one <!-- two --> <!-- three --> four --> <!------------------------------------------------------------> doctype : !DOCTYPE HTML GRAMMAR CONSTRAINTSIt is not immediately obvious from the HTML grammars just which tags can be contained in, or by, other tag environments. The list below was automatically extracted from the HTML grammar files by software developed especially 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 certain 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 provided 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 characters that are not further examined, except for the purposes of scanning for an end tag. This corresponds to verbatim text in typesetting and word-processing 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 section are required. However, if a grammar level list is attached to optional 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. #PCDATAcontained 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
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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
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<T> required:3 ... </T> required:3
contained in: ABOVE:3 BAR:3 BELOW:3 BOX:3 BT:3
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VEC:3
<TAB> 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: 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
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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>
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contained in: TR:3,3.2,4C,4L
contains: #PCDATA:3,3.2,4C,4L A:3,3.2,4C,4L
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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
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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
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KBD:3,3.2,4C,4L LABEL:4C,4L LANG:3 LISTING:3,3.2,4C MAP:3.2,4C,4L MATH:3
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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
SELECT: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 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
<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
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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
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
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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
<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 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
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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
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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
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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
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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
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<UL> ... </UL>
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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
<VAR> ... </VAR>
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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 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
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PRETTYPRINTER LIMITATIONSLike LaTeX, Lisp, PostScript, and TeX, SGML is an extensible language. In particular, at run time, it is possible to redefine the syntax and semantics of all lexical elements, including the base character set, the characters that may appear in identifiers, and the special characters that delimit 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 horizontal 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 grammar for a standard markup language, and it is left to SGML software implementors 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 language for electronic document exchange; several language translators between 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 translations 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 modeled 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 typical use of all standard HTML tags, but nothing about other SGML DTDs. However, 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 proprietary, 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 releases of html-pretty.PRETTYPRINTER IMPLEMENTATION LIMITSAs 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 conform to this documentation; implementations on some systems may have much more generous limits.
SEE ALSOamaya(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), RosettaMan(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 bookCharles 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 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/ http://sgml.sgmlopen.org/ ftp://ftp.math.utah.edu/pub/sgml AUTHORNelson 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 AVAILABILITYhtml-pretty is freely available; its master distribution can be found atftp://ftp.math.utah.edu/pub/sgml/ http://altavista.digital.com/ http://www.hotbot.com/ http://www.stpt.com/ http://www.yahoo.com/
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