heat ras-raf
 &cntrl
  imin=0,irest=0,ntx=1,
  nstlim=20000,dt=0.002,
  ntc=2,ntf=2,
  cut=8.0, ntb=1,
  ntpr=500, ntwx=500,
  ntt=3, gamma_ln=2.0,
  tempi=0.0, temp0=300.0, ig=-1,
  ntr=1, restraintmask=':1-439',
  restraint_wt=20.0,
  nmropt=1
 /
 &wt TYPE='TEMP0', istep1=0, istep2=10000,
  value1=0.1, value2=300.0, /
 &wt TYPE='END' /