2.1.50 Part 4 Section, kinsoku (Use East Asian Typography Rules for First and Last Character per Line)

a.   The standard states that the East Asian typography and line-breaking rules only apply to Chinese PRC, Chinese Taiwan, and Japanese text in the paragraph.

Word only applies these rules to Chinese (Simplified), Chinese (Traditional), Korean, and Japanese text in the paragraph.

b.   The standard does not state how to resolve a conflict between this setting and the overflowPunct element when their rules conflict.

Word allows the rules specified by the overflowPunct element to override this element when they are both true and affect the same character.