An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.
The total number of reflections in the _refln_ list (not the _diffrn_refln_ list). This may include Friedel-equivalent reflections (i.e. those which are symmetry-equivalent under the Laue symmetry but inequivalent under the crystal class) according to the nature of the structure and the procedures used. Special characteristics of the reflections included in the _refln_ list should be given in the item _reflns_special_details.