SYMMOL: a program to find the maximum symmetry group in an atom cluster, given a prefixed tolerance

SYMMOL is a new stand-alone program to find the maximum symmetry compatible with a given tolerance. The input requirements are cell parameters, atomic coordinates and the tolerance. The output is a set of symmetrized coordinates, the point-group label and the point-group elements. Some parameters quantifying the deviation from the exact symmetry are also calculated.