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\n Synopsis
		sfmpifwigrad Fvel=Fv.rsf Fwavelet=Fw.rsf Fadj=Fadj.rsf Fgrad=Fgrad.rsf Fwfl1=Fwfl1.rsf Fwfl2=Fwfl2.rsf ns= ds= s0= sz=5 nr=nx dr=dx r0=x0 rz=5 frectx=2 frectz=2 nb=100 coef=0.002

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\n Parameters
		\n \n \n \n   file Fadj= \tauxiliary input file name \n \n \n\n \n \n \n   file Fgrad= \tauxiliary output file name \n \n \n\n \n \n \n   file Fvel= \tauxiliary input file name \n \n \n\n \n \n \n   file Fwavelet= \tauxiliary input file name \n \n \n\n \n \n \n   file Fwfl1= \tauxiliary output file name \n \n \n\n \n \n \n   file Fwfl2= \tauxiliary output file name \n \n \n\n \n \n \n   float coef=0.002 \tabsorbing boundary coefficient \n \n \n\n \n \n \n   float dr=dx \treceiver interval \n \n \n\n \n \n \n   float ds= \tshot interval \n \n \n\n \n \n \n   int frectx=2 \tsource smoothing in x \n \n \n\n \n \n \n   int frectz=2 \tsource smoothing in z \n \n \n\n \n \n \n   int nb=100 \tboundary width \n \n \n\n \n \n \n   int nr=nx \tnumber of receiver \n \n \n\n \n \n \n   int ns= \tshot number \n \n \n\n \n \n \n   float r0=x0 \treceiver origin \n \n \n\n \n \n \n   int rz=5 \treceiver depth \n \n \n\n \n \n \n   float s0= \tshot origin \n \n \n\n \n \n \n   int sz=5 \tsource depth \n \n \n

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