Regge phenomenology of inclusive processes

The present state of the Regge and duality approach to inclusive reactions is reviewed. Inclusive data can test the duality and Regge prediction for a 3-body amplitude and in particular the duality hypotheses in Reggeon particle and Reggeon-Reggeon amplitudes can be tested with inclusive data. In the large M2-single Regge region exchange degeneracy, Pomeron factorisation and f-dominance are studied and in the small M2-normal Regge exchange region semilocal duality is studied. Duality in Reggeon-Reggeon scattering, double Pomeron exchange and pionisation are discussed. (U.K.)