The control point.
[Visual Basic .NET] Public Sub set_ControlPoint ( _ ByVal ID As String, _ ByRef pt As WKSPoint, _ ByVal A_3 As IControlPointContainer _ )
[C#] public void set_ControlPoint ( string ID, ref WKSPoint pt, ref IControlPointContainer A_3 );
Product Availability
Available with ArcGIS Desktop.