"Clear" is used to delete all entries in the fields for the recipient address. You can then enter new recipient information and confirm the addition of the new Address Book entry with "Add". You can use this method to record all the recipients you need.

The "Add" button is used to apply the data entered in the fields as a new entry in the Address Book.

The "Remove" button is used to delete an entry from the Address Book. In the list, highlight the entry you would like to delete and click on "Remove". The entry will be removed from the Address Book without a confirmation query.

"Change" is used to modify an entry in the Address Book. To do this, highlight the entry to be changed in the list. You can now edit the recipient information in the fields. To apply these changes to the Address Book, click on "Change".