| Whether the [[#Target player|specified player(s)]] have read a letter, where {{t|id}} is the internal mail ID (spaces allowed). For example, <code>PLAYER_HAS_READ_LETTER Any Visited_Island</code>. | | Whether the [[#Target player|specified player(s)]] have read a letter, where {{t|id}} is the internal mail ID (spaces allowed). For example, <code>PLAYER_HAS_READ_LETTER Any Visited_Island</code>. |