Index: trunk/doc/release.2015/ps1.calibration/calibration.tex
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--- trunk/doc/release.2015/ps1.calibration/calibration.tex	(revision 41127)
+++ trunk/doc/release.2015/ps1.calibration/calibration.tex	(revision 41177)
@@ -1970,4 +1970,5 @@
 
 \subsection{Systematic Effects}
+\label{sec:astrometry.systematic}
 
 First, the astrometric calibration has a larger number of systematic