_0D.png "fig:"){height="\fg"} ![The $S_{0n}$ rotoreflection symmetry point groups: $S_0,S_0,S_0$.](S0_0D.png "fig:"){height="\fg"} ![The $S_{0n}$ rotoreflection symmetry point groups: $S_0,S_0,S_0$.](S0_0D.png "fig:"){height="\fg"}  The symmetry group is ${G={\mathbb{Z}}_