Copag is one of the few manufacturers to produce a rare third type, the “magnum index,” which has giant indexes to help recognize the cards from a distance or if a player has impaired vision.
– we just feel it is easier to stick to two terms used consistently in the industry. We refer to small indexes as “regular” indexes and large indexes as “jumbo” indexes, but others may use the terms standard, super, blackjack, etc.
Card indexes are the symbols of suit and rank on the corners of the cards which make it easier to recognize the card value.