If WrapFormat.Type is WrapType.Inline, this value does not have any effect when displaying the object, but can be maintained and used if the object is subsequently changed to floating.

Each floating shape has a Z-ordering value that determines which shape is displayed when any two objects intersect. Higher values indicate higher Z-order; lower values indicate lower Z-order.

This property only indicates the Z-order with respect to other shapes in the document that have an identical WrapFormat.BehindText value. All shapes with a WrapFormat.BehindText value of false are displayed above elements with a value of true.