Net Node
Net node is an item related to networks.
Net Lines
Net nodes define an end points for Net Lines. Each Net Node can be connected to one or more Net Lines.
Net Loads
Net loads can also be attached to a Net Node, but a Net Node can currently only be connected to one load per Net Type.
Net State
A Net Node does not belong to a particular Net Type. Instead, it can be active for a particular net type when it is related to a Net Line or a Net Load of a particular Net Type.