Synopsis
		sfradonoper < in.rsf > out.rsf adj=y verb=n np= dp= p0= nx= ox= dx= parab=n x0=1.

Parameters
		bool adj=y [y/n] if y, perform adjoint operation   float dp= p sampling (if adj=y)   float dx=   int np= number of p values (if adj=y)   int nx= number of offsets (if adj=n)   float ox=   float p0= p origin (if adj=y)   bool parab=n [y/n] if y, parabolic Radon transform   bool verb=n [y/n] verbosity flag   float x0=1. reference offset