       soft
               (1) cutoff (distance units)
         class2/cutoff
               (1) cutoff (distance units)
               (2) offset flag (0 or 1)
         lj/charmm
               (1) inner cutoff (distance units)
               (2) outer cutoff (distance units)

define style of pairwise nonbond interactions to use between all atom types
use appropriate number of coeffs for a particular style
this is separate from charge interactions (see &quot;coulomb style&quot; command)
normally this comma