📄 html-hj.dtd
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<!--=================== Text Flows ========================================--><!ENTITY % block "P | %list | DL | %preformatted | %blockquote | FORM | ISINDEX | FN | TABLE | FIG | NOTE"><!-- ((%block)* | (%text)*) would be much nicer as it would avoid the need for a <P> tag when all you want is a few words of text. The problem is that it also prevents: "<LI> <P>some text" since it forbids PCDATA and hence the white space between the <LI> and the <P>.--><![ %HTML.Recommended [ <!ENTITY % flow "(%block)*">]]><!ENTITY % flow "(%text | %block)*"><!ELEMENT PRE - - (%text)* -(%pre.exclusion)><!ATTLIST PRE %attrs; width NUMBER #implied %needs; -- for control of text flow -- ><![ %HTML.Obsoleted [<!ENTITY % literal "CDATA" -- special non-conforming parsing mode where the only markup signal is the end tag in full. This will cause problems for standard SGML tools! --><!ELEMENT XMP - - %literal><!ELEMENT LISTING - - %literal><!ELEMENT PLAINTEXT - O %literal>]]><!--=================== Lists =============================================--><!ELEMENT DL - - (LH?, (DT|DD)+) -- this is perhaps too lax? --><!ATTLIST DL %attrs; %needs; -- for control of text flow -- compact (compact) #IMPLIED -- more compact style -- ><!ELEMENT DT - O (%text)+><!ELEMENT DD - O %flow;><!ATTLIST (DT|DD) %attrs; %needs; -- for control of text flow -- ><!ELEMENT (OL|UL) - - (LH?, LI+) -- should we allow a list header ? --><!-- style sheet controls numbering style a) whether the parent numbering is inherited, e.g. 5.1.c b) what style is used for current sequence number e.g. arabic, upperalpha, loweralpha, upperroman, lowerroman or a numbering scheme for the current language--><!ATTLIST OL %attrs; %needs; -- for control of text flow -- continue (continue) #IMPLIED -- don't restart sequence number -- seqnum NUMBER #IMPLIED -- starting sequence number -- compact (compact) #IMPLIED -- reduced interitem spacing -- ><!-- Unordered lists: o single or multicolumn with horizontal or vertical wrapping o plain or bulletted list items o bullets can be customised via: - entities (dingbats in HTMLicons) - external graphic via URL - individual attributes on LI tags--><!ATTLIST UL %attrs; %needs; -- for control of text flow -- wrap (vert|horiz|none) none -- multicolumn list style -- plain (plain) #IMPLIED -- suppress bullets -- dingbat ENTITY #IMPLIED -- dingbat entity from HTMLicons -- src (%URI;) #IMPLIED -- bullet defined by graphic -- %url.link; -- standard link attributes -- compact (compact) #IMPLIED -- reduced interitem spacing -- ><!ELEMENT LH - O (%text;)+ -- list header --><!ATTLIST LH %attrs;><!-- For unordered lists, you can override the standard bullet with a custom graphic specified via a URI e.g. src="splash.gif" or a reference to one of the HTMLicons graphics e.g. dingbat=folder The skip attribute is used with ordered lists to skip over sequence numbers for items which have been left out of the list, e.g. skip=3 advances the sequence number past 3 omitted items.--><!ELEMENT LI - O %flow; -- list item --><!ATTLIST LI %attrs; %needs; -- for control of text flow -- dingbat ENTITY #IMPLIED -- dingbat entity from HTMLicons -- src (%URI;) #IMPLIED -- custom bullet graphic -- %url.link; -- standard link attributes -- skip NUMBER 0 -- skip seq nums for missing items -- ><!-- DIR and MENU are now subsumed by UL with type=plain. Use the wrap attribute to control wrapping style for multicolumn lists --><![ %HTML.Deprecated [ <!ELEMENT (DIR|MENU) - - (LI)+ -(%block)> <!ATTLIST (DIR|MENU) compact (compact) #IMPLIED>]]><!--=================== Document Body =====================================--><![ %HTML.Recommended [ <!ENTITY % body.content "(DIV|%heading|%block|HR|ADDRESS|APP)*" -- <h1>Heading</h1> <p>Text ... is preferred to <h1>Heading</h1> Text ... -->]]><!ENTITY % body.content "(DIV | %heading | %text | %block | HR | ADDRESS | APP)*"><!ELEMENT BODY O O (BANNER?, BODYTEXT) +(SPOT)><!ATTLIST BODY %attrs; background %URI; #IMPLIED -- texture tile for document background -- ><!ELEMENT BODYTEXT O O %body.content -- dummy element --><!-- The BANNER element is used for a banner section which appears at the top of the window and doesn't scroll with window contents. This can be used for corporate logos, copyright statements and disclaimers, as well as customized navigation/search controls.--><!ELEMENT BANNER - - %body.content><!ATTLIST BANNER %attrs; ><!-- SPOT is used to insert IDs at arbitrary places e.g. for end points of a marked range (see RANGE) --><!ELEMENT SPOT - O EMPTY><!ATTLIST SPOT id ID #REQUIRED><!ELEMENT (%blockquote) - - (BODYTEXT, CREDIT?)><!ATTLIST (%blockquote) %attrs; %needs; -- for control of text flow -- nowrap (nowrap) #IMPLIED -- disable wordwrap -- ><!ENTITY % address.content "((%text;)* | P*)"><!ELEMENT ADDRESS - - %address.content><!ATTLIST ADDRESS %attrs; %needs; -- for control of text flow -- ><!ELEMENT APP - O EMPTY> <!ATTLIST APP class CDATA #REQUIRED src %URI; #IMPLIED align (bottom|top|center) #IMPLIED width NUMBER #IMPLIED height NUMBER #IMPLIED > <!-- DIV can be used with the CLASS attribute to represent different kinds of container, e.g. chapter, section, abstract, appendix.--><!ELEMENT DIV - - %body.content><!ATTLIST DIV %attrs; %needs; -- for control of text flow -- align (left|center|right) left -- alignment of following text -- nowrap (nowrap) #IMPLIED -- disable wordwrap -- ><!--================ Forms ===============================================--><!-- As HTML 2.0 plus a few extensions: a) A RANGE control which varies between pair of values specified with the size attribute, e.g. SIZE="1, 10" b) FILE widget for uploading one or more files to a server c) SCRIBBLE on image widget that sends the "ink" to the server d) SUBMIT/RESET buttons can now be customised with an image. This subsumes the IMAGE type which is now deprecated. e) Graphical SELECTion menus are now supported, using the new SHAPE attribute on OPTION elements. Further extensions are in the pipeline (e.g. table entry, multiple data formats for textarea fields and client-side scripts with custom widgets) but will have to wait until the backlog of implementation work diminishes.--><!ELEMENT FORM - - %body.content -(FORM) +(INPUT|SELECT|TEXTAREA)><!ATTLIST FORM action %URI #REQUIRED -- server-side form handler -- method (%HTTP-Method) GET -- see HTTP specification -- enctype %Content-Type; "application/x-www-form-urlencoded" script %URI #IMPLIED -- link to client-side script -- ><![ %HTML.Deprecated [ <!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX | RADIO | SUBMIT | RESET | RANGE | FILE | SCRIBBLE | HIDDEN | IMAGE)">]]><!ENTITY % InputType "(TEXT | PASSWORD | CHECKBOX | RADIO | SUBMIT | RESET | RANGE | FILE | SCRIBBLE | HIDDEN)"><!ELEMENT INPUT - O EMPTY><!ATTLIST INPUT %attrs; type %InputType TEXT name NAME #IMPLIED -- required for all but submit and reset -- value CDATA #IMPLIED -- required for radio buttons & checkboxes -- disabled (disabled) #IMPLIED -- read-only fields -- error CDATA #IMPLIED -- why field is in error -- checked (checked) #IMPLIED -- for radio buttons and check boxes -- size NUMBER #IMPLIED -- visible width of TEXT fields -- maxlength NUMBER #IMPLIED -- max number of chars for TEXT fields -- min %REAL #IMPLIED -- lower limit for RANGE fields -- max %REAL #IMPLIED -- upper limit for RANGE fields -- accept CDATA #IMPLIED -- list of MIME types for file fields -- src %URI #IMPLIED -- for fields with background images -- %url.link; -- standard link attributes -- align (top|middle|bottom|left|right) top ><!-- SRC attribute added for graphical selection menus The WIDTH, HEIGHT and UNITS attributes apply to the image specified by the SRC attribute. --><!ELEMENT SELECT - - (OPTION+) -(INPUT|TEXTAREA|SELECT)><!ATTLIST SELECT %attrs; name CDATA #REQUIRED multiple (multiple) #IMPLIED disabled (disabled) #IMPLIED -- read-only menu -- error CDATA #IMPLIED -- why selections are in error -- src %URI #IMPLIED -- for graphical selection menus -- %url.link; -- standard link attributes -- width NUMBER #IMPLIED -- desired width of in en's or pixels -- height NUMBER #IMPLIED -- desired height in en's or pixels -- units (en|pixels) pixels -- units for width and height -- align (top|middle|bottom|left|right) top ><!ELEMENT OPTION - O (#PCDATA)><!ATTLIST OPTION %attrs; selected (selected) #IMPLIED value CDATA #IMPLIED -- default to element content -- shape %SHAPE; #IMPLIED -- for graphical selection menus -- disabled (disabled) #IMPLIED -- unselectable option -- error CDATA #IMPLIED -- why this choice is in error -- ><!-- Multi-line text input field. align=left or right causes the field to float to margin and for subsequent text to wrap around the field.--> <!ELEMENT TEXTAREA - - (#PCDATA) -(INPUT|TEXTAREA|SELECT)><!ATTLIST TEXTAREA %attrs; name CDATA #REQUIRED rows NUMBER #REQUIRED cols NUMBER #REQUIRED disabled (disabled) #IMPLIED -- read-only field -- error CDATA #IMPLIED -- why field is in error -- align (top|middle|bottom|left|right) top ><!--======================= Captions ======================================--><!ELEMENT CAPTION - - (%text;)+ -- table or figure caption --><!ATTLIST CAPTION %attrs; align (top|bottom|left|right) #IMPLIED ><!--======================= Tables ========================================--><!-- Tables and figures can be aligned in several ways: bleedleft flush left with the left (window) border left flush left with the left text margin center centered (text flow is disabled for this mode) right flush right with the right text margin bleedright flush right with the right (window) border justify when applicable the table/figure should stretch to fill space between the text margins Note: text will flow around the table or figure if the browser judges there is enough room and the alignment is not centered or justified. The table or figure may itself be part of the text flow around some earlier figure. You can in this case use the clear or needs attributes to move the new table or figure down the page beyond the obstructing earlier figure. Similarly, you can use the clear or needs attributes with other elements such as headers and lists to move them further down the page.--><!ENTITY % block.align "align (bleedleft|left|center|right|bleedright|justify) center"><!-- The HTML 3.0 table model has been chosen for its simplicity and the ease in writing filters from common DTP packages. By default the table is automatically sized according to the cell contents and the current window size. Specifying the columns widths using the colspec attribute allows browsers to start displaying the table without having to wait for last row. The colspec attribute is a list of column widths and alignment specifications. The columns are listed from left to right with a capital letter followed by a number, e.g. COLSPEC="L20 C8 L40". The letter is L for left, C for center, R for right alignment of cell contents. J is for justification, when feasible, otherwise this is treated in the same way as L for left alignment. Column entries are delimited by one or more space characters. The number specifies the width in en's, pixels or as a fractional value of the table width, as according to the associated units attribute. This approach is more compact than used with most SGML table models and chosen to simplify hand entry. The width attribute allows you to specify the width of the table in pixels, en units or as a percentage of the space between the current left and right margins. To assist with rendering to speech, row and column headers can be given short names using the AXIS attribute. The AXES attribute is used to explicitly specify the row and column names for use with each cell. Otherwise browsers can follow up columns and left along rows (right for some languages) to find the corresponding header cells. Table content model: Braille limits the width of tables, placing severe limits on column widths. User agents need to render big cells by moving the content to a note placed before the table. The cell is then rendered as a link to the corresponding note. To assist with formatting tables to paged media, authors can differentiate leading and trailing rows that are to be duplicated when splitting tables across page boundaries. The recommended way is to subclass rows with the CLASS attribute For example: <TR CLASS=Header>, <TR CLASS=Footer> are used for header and footer rows. Paged browsers insert footer rows at the bottom of the current page and header rows at the top of the new page, followed by the remaining body rows.--><!ELEMENT TABLE - - (CAPTION?, TR*) -- mixed headers and data --><!ATTLIST TABLE %attrs; %needs; -- for control of text flow -- border (border) #IMPLIED -- draw borders -- colspec CDATA #IMPLIED -- column widths and alignment -- units (en|pixels|relative) en -- units for column widths -- dp CDATA #IMPLIED -- decimal point e.g. dp="," -- width NUMBER #IMPLIED -- absolute or percentage width -- %block.align; -- horizontal alignment -- noflow (noflow) #IMPLIED -- noflow around table -- nowrap (nowrap) #IMPLIED -- don't wrap words -- ><!ENTITY % cell "TH | TD"><!ENTITY % horiz.align "left|center|right|justify"><!ENTITY % vert.align "top|middle|bottom|baseline"><!-- Browsers should tolerate an omission of the first <TR> tag as it is implied by the context. Missing trailing <TR>s implied by rowspans should be ignored. The alignment attributes act as defaults for rows overriding the colspec attribute and being in turn overridden by alignment attributes on cell elements. Use valign=baseline when you want to ensure that text in different cells on the same row is aligned on the same baseline regardless of fonts. It only applies when the cells contain a single line of text.--><!ELEMENT TR - O (%cell)* -- row container --><!ATTLIST TR %attrs; align (%horiz.align) #IMPLIED -- horizontal alignment -- valign (%vert.align) top -- vertical alignment -- dp CDATA #IMPLIED -- decimal point e.g. dp="," -- nowrap (nowrap) #IMPLIED -- don't wrap words -- >⌨️ 快捷键说明
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