Definitions for "Start/stop character"
Keywords:  picket, scanner, fence, bar, codabar
Distinct characters used at the beginning and end of each bar code symbol that provides initial timing references and indicates the direction of scanning.
A bar code character that provides the scanner with start or stop reading instructions as well as code orientation. The start character is normally at the left hand side end of a ‘picket fence’ oriented code. The stop character is normally at the right hand end.
a bar code character included in a symbol to indicate to the scanner the beginning and end of the code.