Program sfovc | Oriented velocity continuation. 
[SYNOPSIS]
sfovc < in.rsf > out.rsf eps=0.1 nv=1 lagrange=n v0=0. vmax=
[COMMENTS]

Axis order: t, p, x

[PARAMETERS]
float   | eps | =0.1 |   | 	stretch regularization 
bool    | lagrange | =n |  [y/n] | 	Use Lagrangian method 
int     | nv | =1 |   | 	number of velocity steps 
float   | v0 | =0. |   | 	starting velocity 
float   | vmax | = |   | 	end velocity 
[DIRECTORY]
system/seismic
