Generation of a long process of a CNS neuron, that carries efferent (outgoing) action potentials from the cell body in the midbrain towards target cells in the diencephalon. [ GOC:cls GOC:dgh GOC:dph http://purl.obolibrary.org/obo/go/references/0000021 GOC:jid ]
This is just here as a test because I lose it