Definition
The courtesy pass is an optional exchange of one to three tiles with the player across from you after the Charleston, agreed by both players.
Both players must agree on the number. It is the only point in the Charleston where passing a joker is technically legal, and almost never wise.
Read the full guide: The Charleston in American Mahjong: Rules, Order & Strategy.
See it on real tiles: the coach reads any hand and names its direction, free, at the free read. Members get the coach on call for their own games.
More terms: Pung, Kong, Quint, Pair, Charleston, Blind pass, Joker, Joker exchange.