Removes the crease from selected mesh faces, edges, or vertices.
Restore smoothness to an edge that has been creased.
You can also remove a selected crease using the Crease area of the Properties palette by changing the Type value to None when a face on a mesh is selected.
The following prompt is displayed:
Specifies which creased edges to smooth. You do not need to press Ctrl to select a creased subobject.