Program sfpsmig | 2-D Phase-shift modeling and migration. 
[SYNOPSIS]
sfpsmig < inp.rsf > out.rsf vel=vel.rsf adj=n nw= dw= eps=0.1f
[PARAMETERS]
bool    | adj | =n |  [y/n] | 	adjoint flag, 0: modeling, 1: migration 
float   | dw | = |   | 	
float   | eps | =0.1f |   | 	stabilization parameter 
int     | nw | = |   | 	
file    | vel | = |   | 	auxiliary input file name
[DIRECTORY]
user/chenyk
