Summary

This review gives a brief summary of a small sample of the QCD results coming from HERA. Charged particle distributions have been studied in the current region of the Breit frame over a wide range of Q². These result show clear evidence for scaling violation in scaled momenta as a function of Q² and supports the coherent nature of QCD cascades. The observed charged particle spectra are consistent with the universality of quark fragmentation in e⁺e^- and DIS.

The intriguing rise of F₂ at small x can be well described using conventional DGLAP evolution equations. The data though can also be described by the BFKL approach thus giving rise to ambiguities how to treat QCD in this small x regime. In order to resolve these ambiguities jet production in the forward direction has been studied and the cross section for such jets is seen not to be reproduced by Monte Carlo models based on DGLAP parton shower evolution.