Creates a tube surface using free curves as a path.The tube surface can have a variable radius.
Determines the initial radius value of the manipulators. If there is only one manipulator, its radius can also be adjusted through this slider.
If checked, the tube surface is built as multiple Bezier (single span) patches. If unchecked (default), a single multi-span surface is created.
If this box is checked, selecting a curve also selects all other curves that are tangent continuous with it.
