2.1.604 Part 1 Section 18.3.1.20, controlPr (Embedded Control Properties)

a.   The standard specifies the recalcAlways attribute.

Office does not read or write the recalcAlways attribute and ignores this attribute if present.

b.   The cf attribute in the controlPr element is round tripped.

Office does not round trip the cf attribute in the controlPr element.

c.   The standard specifies that all of the attributes under the controlPr element are valid.

Excel ignores the attributes autoFill, autoLine, autoPict, cf, defaultSize, disabled, macro, recalcAlways and uiObject, and does not round trip cf and recalcAlways when controlPr is associated with an ActiveX(R) control.

d.   The standard specifies that all of the attributes under the controlPr element are valid.

Excel ignores autoFill, autoLine, autoPict, cf, defaultSize, disabled, id, linkedCell, listFillRange, recalcAlways and uiObject, and does not round trip autoPict, cf, id, linkedCell, listFillRange and recalcAlways when associated with a form control.