In most modern games with trump suits, the rules for following suit do not distinguish between the trump suit and the "plain suits". If a trick begins with a plain suit card and a later player cannot follow suit, the player may choose freely to either "slough" (discard a card of another plain suit), or "ruff" ("trump" the trick by playing a trump card). Subsequent players to the trick must still follow the original suit, and may only discard or trump if they do not hold a card of the suit led. Certain games are "play to beat" or "must-trump"; if a player cannot follow suit but can play trump, they must play trump, and additionally if they are able they must beat any trump card already played to the trick. Pinochle and several of the Tarot card games have this rule.