346:/std/board.c (/std/board.c)
(public int) block_writer()
/*
 * Function name: block_writer
 * Description  : If this_player() is not allowed to write notes on this
 *                board, this function should be used to block access.
 *                If you print an error message on failure, please check
 *                whether this_player() is in the environment of the board.
 *                Redefine this function in your board code. It gets called
 *                automatically when someone tries to write.
 * Returns      : int 1/0 - true if the player is NOT allowed to write.
 */
