From Big Medical Encyclopedia

RIDER-CARD (German Reiter the rider, the equestrian) — the card or a punched card with the indicator fixed on it, or the rider, in the form of a metal or plastic clip. On the rider if necessary number of the map or the coded contents of this map are designated. River - to. are applied as dividers, promote acceleration of obtaining necessary information, simplification of search of cards in arrays of a card file.

A. L. Lindenbraten.