2.1.815 Part 1 Section 18.11.1.17, rfmt (Revision Format)

a.   The standard defines the length attribute without including its maximum values.

Office requires that the length attribute shall be less than 32767 when a part of string is affected by the change or shall be 2147483647 when all the characters of the string are affected by the change.

b.   The standard defines the @sheetId without including its maximum or minimum values.

Office specifies that @sheetId is in the range from 0 to 32767.

c.   The standard does not describe the limits and relationships of @start.

Office requires that either @length is 2147483647 and @start is 0 or the sum of @start and @length shall be less than 32767.

d.   The standard does not specify when @start shall be omitted.

Office specifies @start such that start shall be omitted when a built-in or custom format is applied to the references specified by @sqref.

e.   The standard does not specify when @length is omitted.

Office specifies that @length shall be omitted when a built-in or custom format is applied to the references specified by @sqref.