Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 21370)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 21475)
@@ -4,4 +4,5 @@
 COMBINE.REJ	F32	3.0		# Rejection threshold in combination (sigma)
 COMBINE.SYS	F32	0.08		# Relative systematic error in combination
+COMBINE.DISCARD	F32	0.2		# Discard fraction for Olympic weighted mean
 MASK.VAL	STR	MASK.VALUE,BAD.WARP	# Mask value of input bad pixels
 MASK.BAD	STR	BLANK		# Mask value to give bad pixels