Synopsis
		sflumsharpener < in.rsf > out.rsf nfw= nclip=(nfw+1)/2 boundary=n

Parameters
		bool boundary=n [y/n] if y, boundary is data, whereas zero   int nclip=(nfw+1)/2 tuning parameter (1 <= nclip <= (nfw+1)/2, the default is (nfw+1)/2)   int nfw= filter-window length (positive and odd integer)