I.R.I.S. Cardiris Pro 5 - Manual (Page 59)

Cardiris TM 5 – User Guide
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Any data Cardiris cannot attribute to a database field is put in the
Extra field.
Unrecognized characters are represented by a tilde (the "~" symbol").

The recognition results can edited in several ways. See Editing
the recognition results.
Note: when you re-execute the recognition on cards that have
already been recognized, Cardiris will perform different operations
depending on the card status:

Cards that have the status New will be recognized again. The
data they already contain will be erased and filled out again.

Cardiris will try to complete any missing fields of Indexed
cards.

Cardiris will not execute the recognition again on Verified cards.
R
ECOGNIZING BATCHES OF CARDS
When scanning batches of cards it may be useful to also recognize
them in batch, instead of performing the recognition on each card