2.1.1558 Part 4 Section 220.127.116.11, rAngAx (Right Angle Axes)
a. The standard states that the default value of the val attribute is true.
Office uses a default value of false for this attribute.
This note applies to the following products: 2007, 2007 SP1, 2007 SP2.
b. The standard does not describe any interplay between this element and the rotX, rotY elements.
Office only calculates the default extrude angles with the rotX and rotY values when the rAngAx element is specified.