2.1.823 Part 1 Section 18.11.1.25, undo (Undo)

a.   The standard does not place any restrictions on the value for the sId attribute.

Office only allows a maximum value of 32767 for the sId attribute.

b.   The standard does not place any restrictions on the existence of the array and v attributes.

In Office, the array attribute and the v attribute are mutually exclusive. Both cannot be true at the same time.

c.   The standard defines @exp without specifying the relationships it has with other attributes.

Office requires that when @exp equals ref or refError, then @dr should define a single cell reference.

d.   The standard does not define a relationship between the value of the nf attribute and the value of the ref3D and exp attributes.

In Office, if the nf attribute is true, then the ref3D attribute should be false and the exp attribute should not be refError or areaError.

e.   The standard does not define a relationship between the value of the ref3D attribute and the value of the exp attribute.

In Office, if the ref3D attribute is true, then the exp attribute should not be computedArea.

f.   The standard states that this element represents undo information for row and column deletion.

Office uses this element to represent undo information for row and column deletion and also move operations of rows and columns.

g.   The standard states that the dn attribute is mutually exclusive with the r attribute.

In Office, the dn attribute is mutually exclusive with the r and sId attributes.

h.   The standard places no restrictions on the index attribute.

Office requires that the index attribute be less than the total number of expressions in the formula.