Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 26902)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 27105)
@@ -24,4 +24,5 @@
 VARIANCE	BOOL	TRUE		# Use variance in rejection?
 SAFE		BOOL	TRUE		# Play safe when combining small number of values?
+WEIGHTS		BOOL	TRUE		# Use 1/noise^2 weighting?
 BIN1		S32	4		# Binning factor for first level
 BIN2		S32	4		# Binning factor for second level
@@ -84,5 +85,6 @@
 # Faster processing for PR images
 PR	METADATA
-	IMAGE.REJ	    F32	  0.5	
+	IMAGE.REJ	    F32	  0.5
+	WEIGHTS		    BOOL  FALSE
 	CONVOLVE	    BOOL  FALSE
 	SKIP.BG.SUB	    BOOL  FALSE