touchback - (American football) a play in which the opposing team has kicked the football into your end zone.
From Wikipedia, the free encyclopedia. A check digit is a form of redundancy check used for error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It is analogous to a binary parity bit used to check for errors in computer-generated data.
Check Routing Number. Bank checks usually contain three sets of numbers printed in magnetic ink at the bottom of the check. Business checks usually have the check number printed first, followed by the routing number, followed by the bank account number last. Personal checks usually use a different number order, with the routing number appearing first, followed by the account number, followed by the check number. With business checks, the check number is preceeded and followed by an OCR-Dash symbol that looks like (seen at right) a quote, followed by a dot.