Program sffkgdmo | FK-domain Gardner's DMO for regularly sampled 2-D data 
[SYNOPSIS]
sffkgdmo < in.rsf > out.rsf inv=y shot=n eps=0.01 nb=85 db=1 xi=1
[COMMENTS]

The input/ouput is (offset,logstretch frequency, midpoint/shot wavenumber).

[PARAMETERS]
float   | db | =1 |   | 	angle increment 
float   | eps | =0.01 |   | 	stretch regularization 
bool    | inv | =y |  [y/n] | 	inversion flag 
int     | nb | =85 |   | 	number of angles 
bool    | shot | =n |  [y/n] | 	if shot gathers instead of midpoint gathers 
float   | xi | =1 |   | 	continuation paremeter 
[DIRECTORY]
system/seismic
