2.1.114 Part 1 Section 17.4.2, bottom (Table Cell Bottom Margin Exception)
For additional notes that apply to this portion of the standard, please see the notes for top, §17.4.78(a) .
a. The standard states that a 'type' attribute value of "nil" specifies that the current width is 0.
Word ignores this element when the 'type' attribute has a value of "nil."