Program sfldip | dip estimation by line interpolating pwd 
[SYNOPSIS]
sfldip < in.rsf > out.rsf idip=p0.rsf m=1 n=1 rect1=0 rect2=0 niter=5 liter=20 eta=1.0 verb=n interp=
[PARAMETERS]
float   | eta | =1.0 |   | 	steps for iteration 
string  | idip | = |   | 	auxiliary input file name
string  | interp | = |   | 	interpolation method: maxflat lagrange bspline 
int     | liter | =20 |   | 	number of linear iterations 
int     | m | =1 |   | 	b[-m, ... ,n] 
int     | n | =1 |   | 	b[-m, ... ,n] 
int     | niter | =5 |   | 	number of iterations 
int     | rect1 | =0 |   | 	dip smoothness on 1st axis 
int     | rect2 | =0 |   | 	dip smoothness on 2nd axis 
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/chen
