Many options have been added to the creation tools of the unit cells and it is possible to choose an equivalent position generator among the 14 Bravais lattices or the 230 space groups. The equivalent position generator defines the lattice and the lattice point list is generated automatically.
In the 4.0 version the lattice points are objects as a whole, which is very important for teaching : indeed it is easy to build up a crystal by combining a lattice and a motif. The motif of a unit cell has not only a list of atom positions but also a list of bonds between atoms and a list of coordination polyhedra. The bonds and the polyhedra are automatically searched for each building up of a crystallographic representation.