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diff --git a/noao/digiphot/photcal/evaluate/invert.com b/noao/digiphot/photcal/evaluate/invert.com
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+pointer py # pointer to the reference equation values
+pointer pyfit # pointer to the fit equation values
+pointer pa # pointer to the parameters to be fit
+pointer pdelta # pointer to the parameter increments
+pointer pda # pointer to the temporary parameter increments
+pointer palpha # pointer to the accumulated matrix
+pointer pbeta # pointer to the accumulated right side vector
+pointer pik # pointer to working index array for matrix inversion
+pointer pjk # pointer to working index array for matrix inversion
+
+pointer pyerr # pointer to the error equation values
+pointer pafit # pointer to the temporary fit array
+
+common /invertcom / py, pyfit, pa, pdelta, pda, palpha, pbeta, pik, pjk
+common /invertcom / pyerr, pafit