The name of the node (NODE LABEL) order in logical rule: starting upstream to downstream
The longest label is 12 characters (az, AZ, 0-9): AR129, P6000; Without space when define the label
Label should defined in the system, e.t: Name of river / channel, then the distance or position with distance (Kok-100 or K1000...)
River connection / channel is determined by the sequence order