[gmx-users] about *.itp files

[parinald at unsl.edu.ar]

Hi gmx´ers:
           I try to create "clna.top". I define a new building block (or 
molecule) in the ffG43a1.rtp, then clna.pdb and I don't forget add [CLNA] 
in the aminoacid.dat, and now I run pdb2gmx, but dont work`s!.
I reed the manual: when defining new molecules (non-protein)it is 
preferable to create *.itp (seccion 5.6.2), but I dont know how to use 
that!. Thank you. 
                 Pablo.