Program sffincon | Offset continuation by finite differences 
[SYNOPSIS]
sffincon < input.rsf > output.rsf nh= dh= h0= all=n
[PARAMETERS]
bool    | all | =n |  [y/n] | 	if y, output all offsets 
float   | dh | = |   | 	Offset step size 
float   | h0 | = |   | 	Initial offset 
int     | nh | = |   | 	Number of steps in offset 
[DIRECTORY]
system/seismic
