2.1.511 Part 1 Section 19.160, draw:extrusion-origin

a.   The standard defines the attribute draw:extrusion-origin, contained within the element <draw:enhanced-geometry>

Word 2013 does not support this attribute for draw:custom-shape.  Word always writes out (-0.5 0.5).

b.   The standard defines the attribute draw:extrusion-origin, contained within the element <draw:enhanced-geometry>

Excel 2013 does not support this attribute for draw:custom-shape.  Excel always writes out (-0.5 0.5).

c.   The standard defines the attribute draw:extrusion-origin, contained within the element <draw:enhanced-geometry>

PowerPoint 2013 does not support this attribute for draw:custom-shape.  PowerPoint always writes out (-0.5 0.5).