;Task: Display a region that consists of a large sphere with part of a smaller sphere removed from it as a result of geometric subtraction. (This will basically produce a shape like a "death star".) ;Related tasks: * [[Draw_a_sphere|draw a sphere]] * [[Draw_a_cuboid|draw a cuboid]] * [[Draw_a_rotating_cube|draw a rotating cube]] * [[Write_language_name_in_3D_ASCII|write language name in 3D ASCII]]