| User Guide User Guide User Guide     | 
|  Use it! |  | 
Used to change the active B-spline surface settings to the attributes of a B-spline surface in the design.
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| Tool Setting | Effect | 
|---|---|
| Polygon | If on, whether the surface's control polygon is displayed is matched. 
 
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| Curve | If on, whether the surface is displayed is matched: 
 
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| Closure | If on in the U or V direction, whether the surface is Open or Closed in that direction is matched. | 
| Order | If on in the U or V direction, the order of the identified surface in that direction is matched. | 
| Rules | If on in the U or V direction, the number of rule lines in that direction is matched. | 
|  | To change a B-spline surface to the active B-spline surface attributes, use the Change to Active Surface Settings tool in the Modify Surfaces tool box. |