In the larger post offices specially designated date-stamps for arriving and departing mail were put into use. At first they included the full words ARRIVÉE (waarid, وارد) or DEPART (saadir, صادر ); later the initials were used. Properly, the arrival markings should have been used as a back stamp or receipt, or as a cancellation for postage due stamps, but sometimes one finds an "arrival" cancellation used on outgoing mail.