The Codabar is a discrete, self-checking symbology that may encode 16 different characters, plus an additional 4 start/stop characters. This symbology is used by U.S. blood banks, photo labs, and on FedEx air bills.
The following properties are specific to the Codabar type and listed in the Properties panel under the Symbology property:
Start and Stop Symbols
Specifies the first (start) and last (stop) symbols used to code the bar code's structure.
Wide Narrow Ratio
Specifies the density of a bar code's bars.