2.1.389 Part 1 Section 188.8.131.52, bookFoldPrintingSheets (Number of Pages Per Booklet)
a. The standard states that if this element is omitted, then default behavior shall be to print the document on a single sheet.
In Word, if this element is omitted, default behavior is to include all the pages of the document in a single booklet.
b. The standard states that the values of the val attribute are defined by the XML Schema integer datatype.
Word defines the values of this attribute with the XML Schema short datatype, with a minimum value of 0.