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[xiangsitian@163.com]

Dear  forum,
 I am a new learner of abinit.When I learn introduction of abinit,I meet
a question in outfile.My version is 4.6.5.I run the code in the following of 
introduction lesson 2.I calculate total energy and atomisation energy of H2.I
don't konw what this means in the outfile.
 Cartesian coordinates (bohr)
 -7.00000000000000E-01  0.00000000000000E+00  0.00000000000000E+00
  7.00000000000000E-01  0.00000000000000E+00  0.00000000000000E+00
 Cartesian forces (hart/bohr); max,rms= 3.74050E-02 2.15958E-02 (free atoms)
 -3.74050242520893E-02  0.00000000000000E+00  0.00000000000000E+00
  3.74050242520893E-02  0.00000000000000E+00  0.00000000000000E+00
1.what does max,rms= 3.74050E-02 2.15958E-02 (free atoms) mean in the above?
reduced coordinates (array xred) for    2 atoms
      -0.076091412530      0.000000000000      0.000000000000
       0.076091412530      0.000000000000      0.000000000000
 rms dE/dt=  1.0648E-03; max dE/dt=  1.8443E-03; dE/dt below (all hartree)
    1      -0.001844272527      0.000000000000      0.000000000000
    2       0.001844272527      0.000000000000      0.000000000000
2.what does rms dE/dt=  1.0648E-03; max dE/dt=  1.8443E-03; dE/dt below (all 
hartree) mean?
 cartesian forces (eV/Angstrom) at end:
    1      0.00948363002664     0.00000000000000     0.00000000000000
    2     -0.00948363002664     0.00000000000000     0.00000000000000
 frms,max,avg= 5.4753763E-03 9.4836300E-03   0.000E+00  0.000E+00  0.000E+00 
e/A
3.What does frms,max,avg= 5.4753763E-03 9.4836300E-03   0.000E+00  0.000E+00  
0.000E+00 e/A mean?
Min el dens=  1.1512E-09 el/bohr^3 at reduced coord.  0.0667  0.5000  0.5000
   next min=  1.1512E-09 el/bohr^3 at reduced coord.  0.9333  0.5000  0.5000
Max el dens=  2.3390E-01 el/bohr^3 at reduced coord.  0.0000  0.0000  0.0000
   next max=  2.3151E-01 el/bohr^3 at reduced coord.  0.9667  0.0000  0.0000
4.what does it mean in the above?
I hope your reply! Thank you!