  This talk is the second part of the summary of the theory section at DIS'97.
We demonstrated that theory of the "hard" processes, based on QCD, has achieved
a better understanding of available experimental data during the past year.
This was due to the remarkable success achieved in calculating of high order
corrections in perturbative QCD (see the summary talk of S. Forte) as well as
progress in nonpertutbative QCD approaches.
