To edit the construction history of the object, click with the left mouse button on any one object with construction history. If you click on an object created with construction history and parameters are available for modification, you will automatically invoke the tool used in the creation of the object. A floating window provides text at the point on the object where you clicked. After it appears, you can move the window anywhere on your screen. The window disappears when you release the mouse button.
Type Shows the type of object selected.
Object types can be Curve, Surface, Trimmed Surface, Polyset, Light, Shell etc. Degree Displays the degree of the curve. Displays the degree of the surface, in the U and V directions as an ordered pair of integers. Displays the number of spans in the U and V parametric surface directions as an ordered pair of integers. This field is displayed only if there are spans of length zero within the curve or surface.