GEANT4 Physics strategy

E.M. comparable to GEANT321 or EGS:
- OO design, new MULS, optical photons
Hadronics:
- comparison OO design vs. GHEISHA
- extensions and new parameterisations
- theoretical models (PYTHIA, Fritiof++...)
Neutrons (ENDF-B6, MENDL-2)
Gamma&lepton / hadron interactions