Flowchart of the sequence of models required to describe a nuclear reaction. The optical model enables to separate the incident flux (total cross-section) in three separate contributions (the shape elastic, the reaction and the direct inelastic cross-sections) and provides the compound nucleus with light particles transmission coefficients. Part of the reaction cross-section (σ_Reaction) is then processed with the pre-equilibrium model to feed inelastic channels as well as the compound nucleus model with the remaining flux (σ_CN). σ_CN is then spread over all outgoing channels by the compound nucleus model.