2.1.219 Part 1 Section 17.6.13, pgSz (Page Size)

a.   The standard states that the values of the code attribute are defined by the ST_DecimalNumber simple type.

Word restricts the value of this attribute to be at least 0 and at most 118.

b.   The standard states that the h and w attributes can have any value in the range 0 to 4294967295, inclusive.

Word requires that this value is between the width of the page margins (and any column widths, for the w attribute) and 31680 (22 inches).