. "local" . . . . . . "1.1.1.1.8.7" . "length (1.1.1.1.8.7): A Tunnel must have one length declaration. This error may be due to having a tunnel with more than one length or to having a value that is not a double (real) number."@en . "false"^^ . "Length of a tunnel in metres from entrance portal to exit portal." . "1"^^ .