LAMMPS Description # generated by SSD 2 atoms 0 bonds 0 angles 2 atom types 0 bond types 0 angle types -400 400 xlo xhi -400 400 ylo yhi -400 400 zlo zhi Atoms 1 1 1 -12.6 -1.0 0.0 0.0 2 2 2 -12.6 0.0 0.0 0.0