Studies of heavy flavour production and the hadronic final state in high   energy ep collisions
  An extract of recent results from the H1 and ZEUS Collaborations is shown. Various properties of quantum chromo dynamics are investigated by studying the details of the hadronic final state of high energy electron proton collisions at HERA. The presented results include analyses of jet cross sections and single particle production such as $\gamma$ and $D$. Part of the measurements deal with final states involving identified heavy quarks (charm and beauty). 
Thomas Kluge (On behalf of the H1 and ZEUS Collaborations)