2.1.630 Part 1 Section 18.3.1.53, is (Rich Text Inline)

a.   The standard states that the maxOccurs value for the r child element is unbounded.

Excel limits the occurrences of this element to 32767.

b.   The standard states that the maxOccurs value for the rPh child element is unbounded.

Excel limits the occurrences of this element to 32767.