Synopsis
		sfpsti2d > out.rsf vel=vel.rsf sigma=fsigma.rsf delta=fdelta.rsf seta=fseta.rsf < source.rsf opt=1 dt= nt= isx= isz= nbt=44 nbb=44 nxl=44 nxr=44 czt=0.01 czb=0.01 cxl=0.01 cxr=0.01 snap=1

Parameters
		float cxl=0.01 decaying parameter   float cxr=0.01 decaying parameter   float czb=0.01 decaying parameter   float czt=0.01 decaying parameter   file delta= auxiliary input file name   float dt=   int isx=   int isz=   int nbb=44   int nbt=44   int nt=   int nxl=44   int nxr=44 assume ABC pars are the same   int opt=1 if y, determine optimal size for efficiency   file seta= auxiliary input file name   file sigma= auxiliary input file name   int snap=1   file vel= auxiliary input file name