What can we learn from inclusive spectra

The present experimental status on single particle inclusive measurements is described. Then, the geometrical aspect of the collision is discussed from the data of total integrated cross sections of nuclear charge or mass. The dynamical aspect of the collision, especially that for the participating region is discussed in connection with proton spectra, composite fragment spectra, pion production, ratios of π-/π+, n/p and t/3He, and production of strange particles. The spectator physics is described from the data on projectile fragments