2.1.15 [HTML] Section 11.2.4, Column groups: the COLGROUP and COL elements
V0016:
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width = multi-length [CN] This attribute specifies a default width for each column in the current column group. In addition to the standard pixel, percentage, and relative values, this attribute allows the special form "0*" (zero asterisk) which means that the width of the each column in the group should be the minimum width necessary to hold the column's contents. This implies that a column's entire contents must be known before its width may be correctly computed. Authors should be aware that specifying "0*" will prevent visual user agents from rendering a table incrementally.
All Document Modes (All Versions)
Relative values (such as "2*") and the special form "0*" are not supported. When a cell spanning multiple columns has content, the amount of content in the multi-column cell can increase the width of other cells in any of the spanned columns. For more information on table layout algorithms, see [MS-CSS21] section 2.1.86.
V0017:
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width = multi-length [CN] This attribute specifies a default width for each column spanned by the current COL element. It has the same meaning as the width attribute for the COLGROUP element and overrides it.
All Document Modes (All Versions)
When a cell spanning multiple columns has content, the
amount of content in the multi-column cell can increase the width of other
cells in any of the spanned columns. In addition, relative widths (such as 2*
) and the special case 0*
are not supported. For more information on table layout algorithms, see
[MS-CSS21] section 2.1.86.
V0018:
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Attributes defined elsewhere * id, class (document-wide identifiers) * lang (language information), dir (text direction) * title (element title) * style (inline style information ) * onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup (intrinsic events) * align, char, charoff, valign (cell alignment)
All Document Modes (All Versions)
The attributes char and charoff are not supported.
All Document Modes (All Versions)
The bgcolor attribute is also supported on COL elements.
V0019:
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Fixed A fixed width specification is given in pixels (e.g., width="30"). A fixed-width specification enables incremental rendering.
All Document Modes (All Versions)
Content in cells that span multiple columns can cause the width of cells in one of those columns to become larger than intended. For more information on table layout algorithms, see [MS-CSS21] section 2.1.86.
V0020:
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Proportional Proportional specifications (e.g., width="3*") refer to portions of the horizontal space required by a table. If the table width is given a fixed value via the width attribute of the TABLE element, user agents may render the table incrementally even with proportional columns.
All Document Modes (All Versions)
Proportional width specifications are not supported.