4d planes are used (the xy, xz, and yz planes). Furthermore, in the
walking modes the walking direction in the 2d base square of the Klein
bottle and the walking speed can be chosen. This program is somewhat
4d planes are used (the xy, xz, and yz planes). Furthermore, in the
walking modes the walking direction in the 2d base square of the Klein
bottle and the walking speed can be chosen. This program is somewhat