Grade (from Global Phasing) produces cif files with non-loop_ descriptions of chiral restraints, e.g.:
_chem_comp_chir.comp_id INH _chem_comp_chir.id chir_01 _chem_comp_chir.atom_id_centre C1 _chem_comp_chir.atom_id_1 C _chem_comp_chir.atom_id_2 C2 _chem_comp_chir.atom_id_3 O _chem_comp_chir.volume_sign negativ This format seems correct to me and actually makes a lot of sense if there is only one chiral centre in the molecule. Coot, however, ignores such records entirely, so the chirality remains unrestrained, cannot be edited in the restraints editor or flipped by a keystroke. Using 0.7-pre-1 (revision 3792) [with guile 1.8.7 embedded] [with python 2.7.0 embedded]. Bug? Oversight? Feature? JED.
