Hello, I am trying to get the energies of individual waters in a trajectory. I am currently using an index file that defines each water individually, but, since I have ~9000 waters and can only define 254 energygrps at a time, this gets ugly quickly. I found some discussion in the list archices about possibly creating a module (g_strain) or adding an option to gmxdump that would allow energy dumps of all atoms or pairs. Has anything like this been developed? Or should I continue with my ugly hacks? Thanks, Ryan Day Department of Physics Rensselaer Polytechnic Institute