Tube Surface Control

Radius

Determines the initial radius value of the manipulators. If there is only one manipulator, its radius can also be adjusted through this slider.

Bezier Surfaces

If checked, the tube surface is built as multiple Bezier (single span) patches. If unchecked (default), a single multi-span surface is created.

Chain Select

If this box is checked, selecting a curve also selects all other curves that are tangent continuous with it.