 <= 8 digits)
         langevin
               (1) desired T at beginning of run
               (2) desired T at end of run
               (3) Langevin damping parameter (inverse time units)
               (4) random seed to use for white noise (0 < seed <= 8 digits)
         nose/hoover
               (1) desired T at beginning of run
               (2) desired T at end of run
               (3) frequency constant for friction force (inverse time units)

enable constant temperature simulations
use appropri