Program sflsm_dsr2d | 2-D prestack least-squares migration with split-step DSR. 
[SYNOPSIS]
sflsm_dsr2d < in.rsf > out.rsf slowness=vel.rsf error=error.rsf verb=n eps=0.01 niter=10 nt=1 nr=1 dt=0.004 npad=0
[PARAMETERS]
float   | dt | =0.004 |   | 	time error 
float   | eps | =0.01 |   | 	stability parameter 
file    | error | = |   | 	auxiliary output file name
int     | niter | =10 |   | 	number of iterations 
int     | npad | =0 |   | 	padding on offset wavenumber 
int     | nr | =1 |   | 	maximum number of references 
int     | nt | =1 |   | 	taper size 
file    | slowness | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/seisinv
