2011

Object Converts 2D or 3D quadratic or cubic spline-fit polylines to equivalent
splines and (depending on the setting of the DELOBJ system variable) deletes
the polylines.
Next Point Enters additional curve segments until you press Enter.
Undo Removes the last specified point.
Close Closes the spline curve by defining the last point as coincident with
the first and making it tangent to the joint.
Specify a point to define the tangent vector or use the Tangent and
Perpendicular object snap modes to make the spline tangent or perpendicular
to existing objects.
SPLINE | 1831