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diff --git a/noao/twodspec/multispec/_msfindspec3.cl b/noao/twodspec/multispec/_msfindspec3.cl
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+#{ _MSFINDSPEC3 -- Refine the model and fit a position function.
+
+#image,f,a,,,,Image
+#width,r,a,10,,,Width of spectra
+#naverage,i,a,20,1,,Number of lines to average
+#verbose,b,a,no,,,Verbose output?
+
+{
+	# Verbose message.
+	if (verbose) {
+	    time
+	    print ("  Refit the spectra in ", image, ".")
+	}
+
+	# Refit the model.
+	fitgauss5 (image, 1, lower=-width/2, upper=width/2,
+	    lines="*", spectra="*", naverage=naverage, track=no,
+	    algorithm=2)
+
+	# Fit the default interpolation function to the positions.
+	fitfunction (image, parameter="x0", lines="*", spectra="*")
+}