              Data items in the REFINE_LS_RESTR_NCS category record details \
               about the restraints applied to atomic positions in domains\
               related by non-crystallographic symmetry during least-squares\
               refinement, and also about the deviation of the restrained\
               atomic parameters at the conclusion of refinement.  It is\
               expected that these values will only be reported once for each\
               set of restrained domains.