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\n Synopsis
		sfdistance < points.rsf > dist.rsf velocity=vel.rsf n1= n2= n3=1 d1= d2= d3=d2 o1=0. o2=0. o3=0. order=2 vel=y

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\n Parameters
		\n \n \n \n   float d1= \t \n \n \n\n \n \n \n   float d2= \t \n \n \n\n \n \n \n   float d3=d2 \tsampling \n \n \n\n \n \n \n   int n1= \t \n \n \n\n \n \n \n   int n2= \t \n \n \n\n \n \n \n   int n3=1 \tdimensions \n \n \n\n \n \n \n   float o1=0. \t \n \n \n\n \n \n \n   float o2=0. \t \n \n \n\n \n \n \n   float o3=0. \torigin \n \n \n\n \n \n \n   int order=2 [1,2] \tAccuracy order \n \n \n\n \n \n \n   bool vel=y [y/n] \tif y, the input is velocity; n, slowness squared \n \n \n\n \n \n \n   string velocity= \tauxiliary input file name \n \n \n

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