text: These are the Bravais lattice types in three dimensions:
  * P – Primitive
  * I – Body centered (from the German "Innenzentriert")
  * F – Face centered (from the German "Flächenzentriert")
  * A – Base centered on A faces only
  * B – Base centered on B faces only
  * C – Base centered on C faces only
  * R – Rhombohedral