BUSNET :: Level 3
		BUSnet level 3 is also called the "application" level. Level 3 defines a protocol that includes many security and safety features. This will be a re-designed version of the original BUSnet spec which was quite extensive. However you can easily write you own level 3 "protocol" that is very simple to the point of not really being a protocol at all. For example a node reads a voltage from a battery and transmits that reading to the network. Another node 500 metres away reads that value and displays it on an LCD. Technically that's a protocol but it's so simple the term hardly applies.