The HTML Table DTD (1995-10-23)

<!-- Content model entities imported from parent DTD:

  %body.content; allows table cells to contain headers, paras,
  lists, form elements and even arbitrarily nested tables.

  %text; is text characters, including character entities and
  character emphasis elements, IMG and anchors
-->

<!ENTITY % attrs
       "id      ID       #IMPLIED  -- element identifier --
        class   NAMES    #IMPLIED  -- for subclassing elements --
        style   CDATA    #IMPLIED  -- rendering annotation --
        lang    NAME     #IMPLIED  -- as per RFC 1766 --
        dir   (ltr|rtl)  #IMPLIED  -- I18N text direction --">

<!--
 The BORDER attribute sets the thickness of the frame around the
 table. The default units are screen pixels.

 The FRAME attribute specifies which parts of the frame around
 the table should be rendered. The values are not the same as
 CALS to avoid a name clash with the VALIGN attribute.

 The value "border" is included for backwards compatibility with
 <TABLE BORDER> which yields frame=border and border=implied
 For <TABLE BORDER=1> you get border=1 and frame=implied. In this
 case, its appropriate to treat this as frame=border for backwards
 compatibility with deployed browsers.
-->

<!ENTITY % Frame "(void|above|below|hsides|lhs|rhs|vsides|box|border)">

<!--
 The RULES attribute defines which rules to draw between cells:

 If RULES is absent then assume:
     "none" if BORDER is absent or BORDER=0 otherwise "all"
-->

<!ENTITY % Rules "(none | basic | rows | cols | all)">
        
<!-- horizontal placement of table relative to window -->
<!ENTITY % Where "(left|center|right)">

<!-- horizontal alignment attributes for cell contents -->
<!ENTITY % cell.halign
        "align  (left|center|right|justify|char) #IMPLIED
         char    CDATA   #IMPLIED -- alignment char, e.g. char=':' --
         charoff NUTOKEN 50       -- % offset for alignment char --"
        >

<!-- vertical alignment attributes for cell contents -->
<!ENTITY % cell.valign
        "valign  (top|middle|bottom|baseline)  #IMPLIED"
        >

<!ELEMENT table - - (caption?, (col|colgroup)*, thead?, tfoot?, tbody+)>
<!ELEMENT caption - - (%text;)+>
<!ELEMENT thead - O (tr+)>
<!ELEMENT tfoot - O (tr+)>
<!ELEMENT tbody O O (tr+)>
<!ELEMENT col - O EMPTY>
<!ELEMENT tr - O (th|td)+>
<!ELEMENT (th|td) - O %body.content>

<!ATTLIST table                    -- table element --
        %attrs;                    -- id, lang, style, dir and class --
        align   %Where;  #IMPLIED  -- table position relative to window --
        width   CDATA    #IMPLIED  -- table width relative to window --
        cols    NUMBER   #IMPLIED  -- used for immediate display mode --
        border  CDATA    #IMPLIED  -- controls frame width around table --
        frame   %Frame;  #IMPLIED  -- which parts of table frame to include --
        rules   %Rules;  #IMPLIED  -- rulings between rows and cols --
        cellspacing NUMBER #IMPLIED -- spacing between cells --
        cellpadding NUMBER #IMPLIED -- spacing within cells --
        >

<!-- ALIGN is used here for compatibility with deployed browsers -->
<!ENTITY % Caption "(top|bottom|left|right)">

<!ATTLIST caption                  -- table caption --
        %attrs;                    -- id, lang, style, dir and class --
        align  %Caption; #IMPLIED  -- relative to table --
        >

<!--
COLGROUP groups a set of COL elements. It allows you to group
several columns together. COL elements contained within a COLGROUP
element do not themselves define column groups.
-->

 <!ATTLIST colgroup
        %attrs;                    -- id, lang, style, dir and class --
        %cell.halign;              -- horizontal alignment in cells --
        %cell.valign;              -- vertical alignment in cells --
        >

<!--
 COL elements define the alignment properties for cells in a given
 column or spanned columns. The WIDTH attribute specifies the
 width of the columns, e.g.

     width=64        width in screen pixels
     width=0.5*      relative width of 0.5
-->

<!ATTLIST col                      -- column groups and properties --
        %attrs;                    -- id, lang, style, dir and class --
        span    NUMBER   1         -- number of columns spanned by group --
        width   CDATA    #IMPLIED  -- relative width e.g. 2.5 --
        %cell.halign;              -- horizontal alignment in cells --
        %cell.valign;              -- vertical alignment in cells --
        >

<!--
    Use THEAD to duplicate headers when breaking table
    across page boundaries, or for static headers when
    body sections are rendered in scrolling panel.

    Use TFOOT to duplicate footers when breaking table
    across page boundaries, or for static footers when
    body sections are rendered in scrolling panel.

    Use multiple TBODY sections when rules are needed
    between groups of table rows.
-->
<!ATTLIST (thead|tbody|tfoot)      -- table section --
        %attrs;                    -- id, lang, style, dir and class --
        %cell.halign;              -- horizontal alignment in cells --
        %cell.valign;              -- vertical alignment in cells --
        >

<!ATTLIST tr                       -- table row --
        %attrs;                    -- id, lang, style, dir and class --
        %cell.halign;              -- horizontal alignment in cells --
        %cell.valign;              -- vertical alignment in cells --
        >

<!ATTLIST (th|td)                  -- header or data cell --
        %attrs;                    -- id, lang, style, dir and class --
        axis    CDATA    #IMPLIED  -- defaults to cell content --
        axes    CDATA    #IMPLIED  -- list of axis names --
        nowrap (nowrap)  #IMPLIED  -- suppress word wrap --
        rowspan NUMBER   1         -- number of rows spanned by cell --
        colspan NUMBER   1         -- number of cols spanned by cell --
        %cell.halign;              -- horizontal alignment in cells --
        %cell.valign;              -- vertical alignment in cells --
        >