text: Point groups in three dimensions, sometimes called molecular point groups after their wide use in studying symmetries of molecules.
  They come in 7 infinite families of axial groups (also called prismatic), and 7 additional polyhedral groups (also called Platonic). In Schönflies notation,
  * Axial groups: C,  S, C, C, D, D, D
  * Polyhedral groups: T, T, T, O, O, I, I
  Applying the crystallographic restriction theorem to these groups yields the 32 crystallographic point groups.
  |colspan=2|(*) When the Intl entries are duplicated, the first is for even n, the second for odd n.