1. Introduction, first two sentences: "extreme conditions" removed, more references added description of transport models added behind "interactions is indeed a challenge to theoretical interpretations" !!! enough to satisfy referee2 ??? 2. Title of the subsection "Simulation of the acceptance" has been changed to "Simulation" and more info on the simulations has beed added (number of events, LVL1 trigger emulation). PLUTO is also introduced. !!! ADD more on PLUTO??? (referee2 wants it) !!!!! 3. Event selection syst. error of the N_part estimate added (as 7% from track mult. comparison) 4. m_t fits 2 slopes fit result for 1 GeV exp removed from Table 2 "pion species" - replaced by "pi mesons" (description of Table 2) decription of 2 slopes fit for 1 GeV removed from the text. Fig.10 with comparison of HADES / TAPS / KAOS momenta/transverse mass distributions added (+ description in the text). 5. rapidity Fig. caption: ...to control systematic errors... => "control" replaced by "check" 6. multiplicities Table 3 - extrapolation to full phase space - method A (UrQMD based ) removed, now extrapolation only using PLUTO. !!! results on multiplicities changed!!! for 1 GeV by 10% !!!!!!!!!!!!!! Systematic errors added to the table, and discussed in the text. multiplicity per participant - syst. errors added: 1) efficiency(5%), 2) extrapolation(9%) 3) number of participats(7%) Table 4 - TAPS and KAOS re-calculated multiplicities removed. 7. anisotropies Fig.12 (former Fig.11) UrQMD points added. Explanation of dashed line added. Fig.13 (former Fig.12) added into caption: Errors of the UrQMD points are smaller than the marker size. reformulation of discussion of Fig.13 adding "in case of the 1A GeV data" after "which, however, tends to level off at somewhat larger values of the anisotropy" 8. Summary ?? !!!should be modified, both referees require it !!! NOT DONE 9. Fig.8-13 "(LVL1 ``semicentral'' events)") added to fig. caption Fig.11-13 were made larger 10. minor comments of referee1 taken into account (text modifications)