Add on is the size of quiet zone between main symbol and add on symbol.
The default value for this property is 0.
The size of the quiet zone on the bottom of the barcode symbol.
The default value for this property is 0.
The size of the quiet zone on the left side of the barcode symbol.
The default value for this property is 0.
The size of the quiet zone on the right side of the barcode symbol.
The default value for this property is 0.
The size of the quiet zone on the top side of the barcode symbol.
The default value for this property is 0.
Defines the option for quiet zone to include addOn symbol. The default unit will be Pixel if value type is number.