  I review the status of next-to-leading-order calculations for hadronic final
states in deeply-inelastic lepton--nucleon scattering. In more detail, I focus
on calculations of (2+1)-jet-type cross sections, describe recent progress in
extending the perturbative description into the transition region between
deeply inelastic scattering and photoproduction, and study the validity of the
fragmentation function picture for one-particle-inclusive cross sections at
small Q^2 and small x_p.
