2.1.1622 Part 4 Section 5.7.2.234, xMode (Left Mode)

For additional notes that apply to this portion of the standard, please see the notes for wMode, §5.7.2.232(a).

a.   The standard states that factor is a valid value of the val attribute for xMode.

Office only saves a val of edge, changing files with factor on save and updating x to reflect this change and preserve the position. This may result in the manualLayout being ignored on subsequent loads if val of x is >1 or <0 after conversion.