2.1.213 Part 4 Section 2.6.8, lnNumType (Line Numbering Settings)
a. The standard states that the values of the start attribute are defined by the ST_DecimalNumber simple type.
Word restricts the value of this attribute to be at least 0 and at most 32767.
b. The standard states that the start attribute specifies the starting value for (re)started line numbering.
Word uses the start attribute as the number of line numbers that should be skipped when starting or restarting line numbering (for example, a value of 3 means to start numbering at 4).
c. The standard states that the countBy attribute can be any integer value.
Word restricts the contents of this attribute to a value between 1 and 100 inclusive.