Program sfttifd2d | 2D TTI time-domain FD modeling 
[SYNOPSIS]
sfttifd2d < Fwav.rsf vel=Fvel.rsf sou=Fsou.rsf rec=Frec.rsf ang=Fang.rsf wfl=Fwfl.rsf > Fdat.rsf verb=n snap=n free=n expl=n dabc=n sout=n uses=n jdata=1 jsnap=nt nqz=sf_n(az) nqx=sf_n(ax) oqz=sf_o(az) oqx=sf_o(ax) atype=
[PARAMETERS]
file    | ang | = |   | 	auxiliary input file name
string  | atype | = |   | 	
bool    | dabc | =n |  [y/n] | 	absorbing BC 
bool    | expl | =n |  [y/n] | 	"exploding reflector" 
bool    | free | =n |  [y/n] | 	free surface 
int     | jdata | =1 |   | 	
int     | jsnap | =nt |   | 	
int     | nqx | =sf_n(ax) |   | 	
int     | nqz | =sf_n(az) |   | 	
float   | oqx | =sf_o(ax) |   | 	
float   | oqz | =sf_o(az) |   | 	
file    | rec | = |   | 	auxiliary input file name
bool    | snap | =n |  [y/n] | 	wavefield snapshots 
file    | sou | = |   | 	auxiliary input file name
bool    | sout | =n |  [y/n] | 	stress output 
bool    | uses | =n |  [y/n] | 	use vsz 
file    | vel | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity 
file    | wfl | = |   | 	auxiliary output file name
[DIRECTORY]
user/psava
