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Concatenations use the double parallel symbol. The example below shows that a person's complete name in the normal sequence is obtained from the person's individual name concatenated with a blank, concatenated with the person's middle name, concatenated with a blank, concatenated with a person's family name.
Person. Name Complete, Normal = Person. Individual Name || ‘ ‘ || Person. Middle Name || ‘ ‘ || Person. Family Name Person. Name Complete, Inverted = Person. Family Name || ‘, ‘ ||Person. Individual Name || ‘ ‘ || Person. Middle Name