  NEUT is a neutrino-nucleus interaction simulation. It can be used to simulate
interactions for neutrinos with between 100 MeV and a few TeV of energy. NEUT
is also capable of simulating hadron interactions within a nucleus and is used
to model nucleon decay and hadron--nucleus interactions for particle
propagation in detector simulations. This article describes the range of
interactions modelled and how each is implemented.
