Establishes a node address for the local node, in the form

     area-number.node-number

 where the area-number is in the range 1 to 63 and the node number
 is in the range 1 to 1023.  If the area-number is not specified,
 a default value of 1 is assumed.  You need not supply the area
 number in the node-address if your node is in area 1.  This parameter
 is required when you configure the local node.