XmlmmCIF equivalent: symmetry Data items in the SYMMETRY category record details about the space-group symmetry. XmlmmCIF equivalent: symmetry/Int_Tables_number Space-group number from International Tables for Crystallography, Vol. A (1987). XmlmmCIF equivalent: symmetry/cell_setting The cell settings for this space-group symmetry. XmlmmCIF equivalent: symmetry/pdbx_full_space_group_name_H-M Used for PDB space group: Example: 'C 1 2 1' (instead of C 2) 'P 1 2 1' (instead of P 2) 'P 1 21 1' (instead of P 21) 'P 1 1 21' (instead of P 21 -unique C axis) 'H 3' (instead of R 3 -hexagonal) 'H 3 2' (instead of R 3 2 -hexagonal) XmlmmCIF equivalent: symmetry/space_group_name_H-M Hermann-Mauguin space-group symbol. Note that the H-M symbol does not necessarily contain complete information about the symmetry and the space-group origin. If used always supply the FULL symbol from International Tables for Crystallography, Vol. A (1987) and indicate the origin and the setting if it is not implicit. If there is any doubt that the equivalent positions can be uniquely deduced from this symbol specify the _symmetry_equiv.pos_as_xyz or _symmetry.space_group_name_Hall data items as well. Leave spaces between symbols referring to different axes. XmlmmCIF equivalent: symmetry/space_group_name_Hall Space-group symbol as described by Hall. This symbol gives the space-group setting explicitly. Leave spaces between the separate components of the symbol. Ref: Hall, S. R. (1981). Acta Cryst. A37, 517-525. XmlmmCIF equivalent: symmetry/entry_id This data item is a pointer to _entry.id in the ENTRY category.