Crystallographic Information Framework

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DDL dictionary version 1.4.1




   Identifies the data item, or items, which must be present
   (collectively) in a looped list with the defined data item
   for the loop structure to be valid. The data item(s)
   identified by _list_reference provide a unique access code
   to each loop packet. Note that this property may be
   transferred to another item with _related_function 'alternate'.

May appear in list

Type: char

Category: list_reference