This system useful for players who have not stable internet connection. If the connection to the server is broken during the game, the character remains in the game. This allows for a certain time (up to three minutes) to connect to the server again without losing the current state. For convenience, all messages of the internal chat are stored.
Basically addon was wrote for L2J aCis, but working with any L2J fork.
This addon is not for sale. Have fun!