To investigate the limits of applicability of pQCD it is important to determine to what extent semi-soft phenomena in hard processes still reflect the properties of the perturbative evolution phase. This line of research, initiated almost 15 years ago [1,2], has reached a high level of sophistication (see [3] for a recent review) and, as witnessed at this workshop, continues to inspire analyses in all major high-energy experiments. This summary deals with some of the most interesting results.
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