Program sflrwave2 | 2-D FFT-based (point src) wave propagation and its adjoint 
[SYNOPSIS]
sflrwave2 < data.rsf > image.rsf src=src.rsf snaps=snaps.rsf left=left.rsf right=right.rsf adj=n timer=n verb=n snap=0 pad1=1 nt= dt= nt= dt=
[PARAMETERS]
bool    | adj | =n |  [y/n] | 	if n, modeling; if y, migration 
float   | dt | = |   | 	time sampling 
file    | left | = |   | 	auxiliary input file name
int     | nt | = |   | 	time samples 
int     | pad1 | =1 |   | 	padding factor on the first axis 
file    | right | = |   | 	auxiliary input file name
int     | snap | =0 |   | 	interval for snapshots 
file    | snaps | = |   | 	auxiliary output file name
file    | src | = |   | 	auxiliary input file name
bool    | timer | =n |  [y/n] | 	
bool    | verb | =n |  [y/n] | 	
[DIRECTORY]
user/jsun
