&run_pars
  cvsid='$Id: run.in,v 1.1 2004/04/17 16:22:46 brandenb Exp $',
  nt=25000, it1=20, cdt=0.4, cdtv=0.80, isave=10, itorder=3,
  dsnap=20., dvid=2., ialive=1
/
&hydro_run_pars
  nu=2e-3, ivisc='nu-const',
/
&density_run_pars
/
&forcing_run_pars
  iforce='helical', force=0.05, relhel=1.,
  iforce='helical', force=0.00, relhel=1.,
/
