[en] I will describe in Section 1 of this talk how we extract the structure functions from the experimental data, what we have to take into account and to correct for. A special emphasis will be put on a completely new way of computing radiative corrections in high energy deep inelastic processes. In Section 2 the present limitations of our study of charged currents will be discussed (especially concerning the Callen-Gross rule, the sea study, some tests of QCD, ...) and I will explain how we plan to solve these problems in the future. (author)