Hi, Maybe it's a trivial question, but as an old-fashioned FORTRAN user, how do I read the GROMACS binary files (such as .edr or .trr)? (I want to do some analysis that is not implemented in GROMACS...) Cheers, Pedro. -- Pedro Alexandre Lapido Loureiro Laboratório de Física Biológica Instituto de Biofísica UFRJ Brasil