This program compare the Geant3 and Geant4 dE/dx tables.
The Geant4 values are read as ffread data cards, as they are printed out
by TestEm3, according the standard Geant3 binning. 
One must complete by hand the data cards KINE and MATE; see the file lead.dat 
as an example.
The Geant3 values are computed within this program.
The g4-g3 differences are ploted in the file plmat.paw

 % cd geant3/g4mat
 % gmakeB           to make an executable  (Batch version) 
 % gmakeT           to make an executable  (inTeractive version)
 
 To execute:
  
 % cd geant3/g4mat
 % $G4SYSTEM/g4mat.xb (for batch) or g4mat.xt (for interactive)
 
 The program will ask:
 G3 > gives the filename of the data cards to be read:
 
 lead.dat      (XXX.dat)