Program sfnhelicon | Non-stationary helix convolution and deconvolution. 
[SYNOPSIS]
sfnhelicon < in.rsf > out.rsf filt=filt.rsf nh=fnh.rsf pch=fpch.rsf adj=n div=n lag=
[PARAMETERS]
bool    | adj | =n |  [y/n] | 	if y, do adjoint operation 
bool    | div | =n |  [y/n] | 	if y, do inverse operation (deconvolution) 
file    | filt | = |   | 	auxiliary input file name
string  | lag | = |   | 	
string  | nh | = |   | 	auxiliary input file name
string  | pch | = |   | 	auxiliary input file name
[DIRECTORY]
user/gee
