2.1.1546 Part 1 Section 21.2.2.177, shape (Shape)

a.   The standard states that this element specifies the shape of a series or a 3-D bar chart.

In Office, this element specifies the default series shape when this element is a child of bar3DChart.

b.   The standard does not place any restrictions on when this element can be a child of ser.

Office requires that the ancestor include bar3DChart when this element is a child of ser.