Synopsis
		sfrickback < in.rsf > out.rsf ma=ma.rsf gamma=debug.rsf m= m= m= m= m= m= m= m= m= m= n= niter=100 verb=n

Parameters
		string gamma= auxiliary output file name   floats m= [n]   file ma= auxiliary output file name   int n=   int niter=100   bool verb=n [y/n]