Use W3C documentation for the XHTML1.1 table model. (http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_tablemodule)
Defines which rules should be drawn draw between the rows and columns of an XHTML table
If the @rules attribute has not been used, the presence or absence of rules will be based on the @border attribute. If
<th border="0">
or there is no @border attribute, then no rules are drawn. Otherwise, the value of the @rules attribute is assumed to be “ all ”. (The related table attribute @frame only concerns rules around the outside of the table.)
Value | Meaning |
---|---|
all | Rules on all rows and columns |
cols | Rules between columns |
groups | Rules between groups |
none | No rules in table |
rows | Rules between rows |
Restriction: This attribute may be specified if the element is used. |