2.1.1765 Part 4 Section 14.4.8, right (Table Cell Trailing Margin Exception)

a.   The standard specifies this additional element semantically equivalent to the end element ("[ISO/IEC-29500-1] §17.4.10; end").

Word ignores this element if the end element ("[ISO/IEC-29500-1] §17.4.10; end") is present as a sibling.