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\n Synopsis
		sfisaac1 < refl.rsf > ttime.rsf xrefl=xrefl.rsf ns=nr ns2=nr ds=dr ds2=dr s0=r0 s02=r0 type=1 order=4 velocity=2.0 tol=1/(1000000*velocity) break=n

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\n Parameters
		\n \n \n \n   bool break=n [y/n] \tGo beyond zero or not \n \n \n\n \n \n \n   float ds=dr \tsource sampling for midpoint \n \n \n\n \n \n \n   float ds2=dr \tsource sampling for offset \n \n \n\n \n \n \n   int ns=nr \tnumber of sources for midpoint \n \n \n\n \n \n \n   int ns2=nr \tnumber of sources for offset \n \n \n\n \n \n \n   int order=4 \tInterpolation order if choose to use sf_eno \n \n \n\n \n \n \n   float s0=r0 \torigin for midpoint \n \n \n\n \n \n \n   float s02=r0 \torigin for offset \n \n \n\n \n \n \n   float tol=1/(1000000*velocity) \tAssign a default value for tolerance \n \n \n\n \n \n \n   int type=1 \tInterpolation type 0=sf_eno and 1=central finite difference \n \n \n\n \n \n \n   float velocity=2.0 \tAssign velocity km/s \n \n \n\n \n \n \n   file xrefl= \tauxiliary output file name \n \n \n

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