SurfacesSurfaces Introduction VisualizationConversion ToolbarStructure Control Points, Rows and GridWeight Primitives NURBS CurveNURBS CircleNURBS SurfaceNURBS CylinderNURBS SphereNURBS Torus Selecting Select MenuSelect RandomChecker DeselectSelect LinkedSelect SimilarSelect Control Point RowSelect More/Less Editing Transform PanelSurfaceControl PointsSegments Properties ShapeActive Spline