There is disclosed a system for flattening hierarchically structured flows using a breadth-first approach. At each level of hierarchy of a hierarchically structured source flow, complex nodes are flattened by one level across the entire breadth of the flow. The results of this flattening are placed in...http://www.google.fr/patents/US7886280?utm_source=gb-gplus-shareBrevet US7886280 - Flattening hierarchically structured flows