Synopsis
		sfsc < inp.rsf pred=pred.rsf error=error.rsf index=index.rsf > out.rsf niter=0 prec=y

Parameters
		string error= prediction (auxiliary output file name)   file index= auxiliary input file name   int niter=0 number of iterations   bool prec=y [y/n] if apply preconditioning   string pred= prediction (auxiliary output file name)