2.1.805 Part 1 Section 18.11.1.2, headers (Revision Headers)
a. The standard does not specify a default value for the lastGuid attribute.
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Excel uses the value of the guid attribute as the default value of the lastGuid attribute.
b. The standard does not place any restrictions on the value for @preserveHistory.
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Office requires that the value of @preserveHistory shall be greater than or equal to 0 and less than or equal to 32K.
c. The standard specifies @protected is false if the tracking should not be removed, true otherwise.
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Office specifies @protected is true if the tracking should not be removed, false if it can be removed.
d. The standard does not place any restrictions on the value for @revisionId.
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Office allows a maximum value of 2147483647.
e. The standard does not place any restrictions on the value for the version attribute.
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Office requires that the version attribute be between 1 and 2147483647 inclusive.
f. The standard specifies @guid to be of type ST_Guid.
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Office requires @guid to not be a null Guid ({00000000-0000-0000-0000-000000000000}).