Heating the system with 25 kcal/mol restraints on DNA, V=const
 &cntrl
 imin=0, ntx=1, ntpr=500, 
 ntwr=500, ntwx=500, ntwe=500,
 nscm=5000,
 ntf=2, ntc=2,
 ntb=1, ntp=0,
 nstlim=50000, t=0.0, dt=0.002,
 cut=9.0,
 tempi=100.0, ntt=1,
 ntr=1,nmropt=1,
 restraintmask=':1-24',
 restraint_wt=25.0,
 &end
 &wt type='TEMP0',istep1=0, istep2=5000, value1=100.0,value2=300.0,
 &end
 &wt type='TEMP0',istep1=5001, istep2=50000, value1=300.0,value2=300.0,  
 &end
 &wt type='END',  &end