2.1.842 Part 4 Section 220.127.116.11, 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.