Brother P-TOUCH 3.1 - Manual (Page 118)

# of Characters
Select the number of characters that can be entered in the barcode. If "Auto" is selected, you can enter
any number of digits within the possible range for the selected protocol.
Check Digit
Click this option to select whether (
) or not ( ) to add a check digit. When a check digit is added,
a modulus operation is applied to the sum of all digits in the barcode data, then the result is integrated
into the barcode. The check digit is used to warn you if an error is detected when reading the barcode.
Print as Characters
Click this option to select whether (
) or not ( ) to print the barcode information below the barcode.
Width
Select the width of the barcode bars.
Ratio
Select the ratio between the widths of the thin and thick bars.
Alignment
Select the position of the characters printed below the barcode.
Click this button to create a barcode using the selected settings and add it to the layout.