Starting stop-symbol for Code128 Trailing stop-symbol for Code128 A two digit number identifying type of the barcode to be generated. Mandatory parameter. Possible values are: 11 - "Standard Customer Barcode" 45 - "Reply Paid Barcode" 59 - "Customer Barcode 2" 62 - "Customer Barcode 3" Two last barcode types could carry customer information and therefore should be used in conjunction with CI and CIencoding parameters (see below).