Synopsis
		sfpetscawefd2d < Fwav.rsf vel=Fvel.rsf sou=Fsou.rsf rec=Frec.rsf wfl=Fwfl.rsf > Fdat.rsf den=Fden.rsf verb=n snap=n free=n expl=n dabc=n jdata=1 jsnap=nt nqz=sf_n (az) nqx=sf_n (ax) oqz=sf_o (az) oqx=sf_o (ax)

Parameters
		bool dabc=n [y/n] absorbing BC   file den= auxiliary input file name   bool expl=n [y/n] "exploding reflector"   bool free=n [y/n] free surface flag   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 flag   file sou= auxiliary input file name   file vel= auxiliary input file name   bool verb=n [y/n] verbosity flag   file wfl= auxiliary output file name