Synopsis
		sfoff2abs3 < Fm.rsf > Fd.rsf verb=n nw=4 nh=nhx + ohx/dhx oh=0 dh=dhx na=180 oa=0. da=2. nb=180 ob=0. db=2.

h = sqrt(hx^2+hy^2+hz^2)
pcs 2005

Parameters
		float da=2.   float db=2.   float dh=dhx   int na=180   int nb=180   int nh=nhx + ohx/dhx   int nw=4 spline order   float oa=0.   float ob=0.   float oh=0   bool verb=n [y/n] verbosity flag