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Modulated and composite structures dictionary (msCIF) version 1.0.1




   The code that identifies an atom in a loop in which the special
   function that describes its displacive modulation is being
   defined. This code must match the _atom_site_label of the
   associated coordinate list and conform to the rules described in

Appears in list as essential element of loop structure

Must match data name_atom_site_label

Type: char

Category: atom_site_displace_special_func