Illegal fix nvt/npt/nph command

Hello,

I have came across a syntax issue, its with the fix command. I am following a tutorial where the fix command is given as follows

fix 1 all npt 100.0 100.0 10.0 aniso NULL NULL NULL NULL 0.0 0.0 10 drag 0.3

from searching on web, i came to know this is an old syntax for fix command. But i dont have access to old documentation and to understand what is the difference between old and new syntax. Therefore i could translate it to new syntax.

If any of experienced users could shed a light.

Thanks,

Hello,

I have came across a syntax issue, its with the fix command. I am following a tutorial where the fix command is given as follows

fix 1 all npt 100.0 100.0 10.0 aniso NULL NULL NULL NULL 0.0 0.0 10 drag 0.3

from searching on web, i came to know this is an old syntax for fix command. But i dont have access to old documentation and to understand what is the difference between old and new syntax. Therefore i could translate it to new syntax.

older versions of LAMMPS (including the matching manual as html and
pdf) can be downloaded from here: https://lammps.sandia.gov/tars/

axel.