&run_pars
  cvsid='$Id: run.in,v 1.4 2003/10/21 18:11:15 nilshau Exp $',
  nt=5000, it1=10, cdt=0.4, cdtv=0.80, isave=100, itorder=3,
  dsnap=2000., dvid=200., ialive=1,dspec=3,vel_spec=T,mag_spec=T
  fft_switch='fftpack',lsfu=T,lsfb=T,lsfz1=T,lsfz2=F,
  lpdfu=F,lpdfb=F,lpdfz1=F,lpdfz2=F,nr_directions=1,oned=T,
  onedall=T
/
&hydro_run_pars
  nu=5e-5, ivisc='nu-const',
/
&density_run_pars
/
&forcing_run_pars
  iforce='helical', force=0.002, relhel=0.,slope_ff=5.
/
&magnetic_run_pars
  eta=5e-5, B_ext=0,0,0.3

