This attribute is defined by the OASIS Open Exchange Table Model. Specifies the presence or absence of column separator rules (vertical rules). Provides the default value for all tgroups in this table.
If colsep is non-zero, display internal column rules to the right of each entry; if zero, do not display the rules. This value is ignored for the rightmost column, where the frame setting applies. The colsep value is determined by the leftmost column of a spanning entry, even though its effect is on the last column of such spanning entry.
This attribute value is implied from the closest element in the inheritance path: colspec then tgroup then table. Note that if a tgroup or table element has no explicit specification for this attribute but does have an associated style sheet that gives a specification for this attribute, then this value shall be used as the value that is inherited from this element.
