The headings for each section of the NIST materials output are aligned on particular character columns, for example ======================================================= ### Simple Materials from the NIST Data Base ### ======================================================= Z Name ChFormula density(g/cm^3) I(eV) ======================================================= However, since at least the 9.4 release the output data is simply streamed, without any alignment: [...] 8 G4_O 0.00133151 95 9 G4_F 0.00158029 115 10 G4_Ne 0.000838505 137 11 G4_Na 0.971 149 12 G4_Mg 1.74 156 [...] This makes reading the output more difficult, and very awkward to transfer into documentation without significant manual editing.
Thanks for pointing to the problem. The fix is integrated to the development release. Marc, please, close the report. Vladimir