[lammps-users] fix keywords

Hi,
I am a beginner using lammps and started by playing around with the provided examples.
I have a basic question on how to use the fix command and altered the in.melt example.

manfred,

the syntax for fix nvt and npt changed recently. the documentation on
the web pages always describes the current version of lammps. you
may need to update the one that you are using. note, that examples
from the mailing list will most likely refer to an old version of LAMMPS.

cheers,
    axel.