All secondary particles, neutrons, charged particles, recoils, are produced in a completely correlated manner, that is energy and momentum are conserved exactly at each neutron interactions. The user should be aware that the secondary particle distributions available in the evaluated data files are inclusive, that is they do not provide the correlations among the various products. Hence considerable work is required to develop interaction models which reproduce as much as possible the inclusive distributions provided in the evaluated data files, while at the same time generating fully correlated events. An exact reproduction of the inclusive distribution is sometimes impossible to achieve, priority is always given to match as much as possible the one of the emitted neutrons. Often evaluated data contain inclusive distributions which are plainly inconsistent with energy conservation for the given reaction channel. In those cases corrections with respect to the tabulated inclusive distributions are applied in order to bring them in compliance with basic conservation laws. There are several degrees of arbitrariness in these procedures, particularly for complex reactions with many emitted secondaries. Physics considerations are applied in order to solve hopefully for the best these issues. However the user should not expect to obtain results which are *exactly* reproducing the inclusive distributions contained in the original evaluated data file.
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