node, it MAY signal Intercept.forward. CollectionC MAY signal
Snoop.receive when it hears a packet which a different node is
supposed to forward. For any given packet it receives, CollectionC
-MUST NOT signal more than one of the Snoop.receive and
-Intercept.forward events.
+MUST NOT signal more than one of the Snoop.receive, Receive.receive,
+and Intercept.forward events.
RootControl allows a node to be made a collection tree root.
CollectionC SHOULD NOT configure a node as a root by default.