Synopsis
		sfkarman < in.rsf > out.rsf x0=1. niter=100 nliter=1 verb=n

Parameters
		int niter=100 number of iterations   int nliter=1 number of reweighting iterations   bool verb=n [y/n] verbosity flag   float x0=1. initial squared length scale

Used In
		TCCS          atten/karman1 atten/karmand atten/spectra