Set the swap characters in this set. Each swap character in this set contains a list of characters which are "swappable" (They appear similar and are hard to distinguish, e.g. '0' (zero) and 'O' (capital oh)).

Set the swap characters in this set. Each swap character in this set contains list of characters which are "swappable" (They appear similar and are hard to distinguish, e.g. '0' (zero) and 'O' (capital oh)).