Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 28609)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 28618)
@@ -9,8 +9,5 @@
 COMBINE.DISCARD	F32	0.2		# Discard fraction for Olympic weighted mean
 
-# XXX which of these is right?
 MASK.VAL	STR	MASK.VALUE,CONV.BAD,GHOST	# Mask value of input bad pixels
-MASK.IN		STR	MASK.VALUE,CONV.BAD,GHOST	# Mask value of input bad pixels
-
 MASK.SUSPECT	STR	SUSPECT,CONV.POOR	# Mask value of suspect pixels
 MASK.BAD	STR	BLANK		# Mask value to give bad pixels