Example usage of high level particles sets. (1) initialize a set; (2) shift particle positions; (3) indexing of particle sets; (4) joining two particle sets; (5) sending particle data to a code; (6) definition of an explicit channel from in-code storage to a particle set in memory; (7) update of particle attributes over the channel. Similar data structures are available for grids as needed for e.g. grid hydrodynamic solvers.