2.1.173 Part 1 Section 17.4.73, tl2br (Table Cell Top Left to Bottom Right Diagonal Border)

For additional notes that apply to this portion of the standard, please see the notes for bar, §17.3.1.4(a-c); bdr, §17.3.2.4(a); left, §17.15.2.21(a).

a.   The standard places no restrictions on the border style used in the val attribute.

Word displays diagonal cell borders as a single solid line, except borders with dotted, dashed, dashSmallGap, dotDash, dotDotDash, and double border styles.

b.   The standard states that if this element is omitted then the table's border settings may be used.

In Word, if this element is omitted, then the table styles border is used.