&run_pars
  cvsid='$Id: run.in,v 1.1 2004/04/04 10:40:39 nilshau Exp $',
  nt=50000, it1=20, cdt=0.4, cdtv=0.80, isave=100, itorder=3,
  dsnap=20., dvid=20., ialive=1, dspec=2, vel_spec=T, mag_spec=F
  fft_switch='fftpack',lsfu=T,
  lpdfu=F,lpdfb=F,lpdfz1=F,lpdfz2=F,nr_directions=1
  slice_position='p'
/
&hydro_run_pars
/
&density_run_pars
/
&forcing_run_pars
  iforce='helical', force=0.00, relhel=0.
/
&viscosity_run_pars
  nu=6e-10
/
