2.1.129 Part 1 Section 17.4.17, gridSpan (Grid Columns Spanned by Current Table Cell)

For additional notes that apply to this portion of the standard, please see the notes for tcPr, §; tcPr, §

a.   The standard allows a gridSpan to have a value of 0.

Word treats a gridSpan of 0 the same as a grid span of 1.