Synopsis
		sffedchain < inp.rsf smooth=smo.rsf w=wht.rsf > out.rsf nc=1 verb=y niter=0 liter=50 rect=1

Parameters
		int liter=50 number of linear iterations   int nc=1 number of components   int niter=0 number of iterations   int rect=1 smoothing in time   file smooth= auxiliary input file name   bool verb=y [y/n] verbosity flag   file w= auxiliary output file name