2.1.166 Part 1 Section 17.4.65, tc (Table Cell)
a. The standard states that the id attribute is a valid attribute of the tc element.
Word ignores the id attribute.
b. The standard states that a tc element must include at least one block-level element.
If a tc element does not contain at least one p element, and that element is not the last child block-level element of the tc element, then Word will fail to open the file.