Data type: numb
Must appear in a looped list containing '_refln_index_'
Enumeration range: 1 -> 48
The number of reflections symmetry-equivalent under the Laue symmetry to the present reflection. In the Laue symmetry, Friedel opposites (h k l and -h -k -l) are equivalent. Tables of symmetry-equivalent reflections are available in International Tables for Crystallography, Volume A (1987), section 10.2.