prefAdd Torus

Parameters Name, Material..., Path..., Show axes, Position, Angle, Scale are general for all objects. They are considered here.
Group Sizes sets the sizes of object. Group Elements defines a design of object. Parameters Rings, Sides influence quality of object display.
Sizes and Elements:
torus1 torus2 torus3
Parameters on screen shot Minor radius: 0.35 Rings: 6   Sides: 4
Material: Color, Transparency