colgroupelement that doesn't have a
HTMLTableColElement, same as for
colgroup elements. This interface defines one member,
col element has a parent and that is a
colgroup element that itself has a parent that is a
table element, then the
represents one or more columns in the column group represented by that
The element may have a
span content attribute
specified, whose value must be a valid non-negative
integer greater than zero.
attribute must reflect the content attribute of the
same name. The value must be limited to only non-negative
numbers greater than zero.