Program sfsglfd2 | 2-D Low Rank Finite-difference wave extrapolation 
[SYNOPSIS]
sfsglfd2 < fsource.rsf vel=fvel.rsf den=fden.rsf > fwf.rsf Gx=fGx.rsf Gz=fGz.rsf sxx=fsxx.rsf sxz=fsxz.rsf szx=fszx.rsf szz=fszz.rsf verb=n spx= spz=
[PARAMETERS]
file    | Gx | = |   | 	auxiliary input file name
file    | Gz | = |   | 	auxiliary input file name
file    | den | = |   | 	auxiliary input file name
int     | spx | = |   | 	source point in x 
int     | spz | = |   | 	source point in z 
file    | sxx | = |   | 	auxiliary input file name
file    | sxz | = |   | 	auxiliary input file name
file    | szx | = |   | 	auxiliary input file name
file    | szz | = |   | 	auxiliary input file name
file    | vel | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity
[DIRECTORY]
user/fangg
