Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 41898)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 42100)
@@ -9,7 +9,7 @@
 COMBINE.DISCARD	F32	0.2		# Discard fraction for Olympic weighted mean
 
-COMBINE.PERCENT   BOOL  FALSE           # Use a single percentile clipping?
-COMBINE.MIN.RANGE F32   0.16            # Minimum fraction for percentile clipping
-COMBINE.MAX.RANGE F32   0.84            # Maximum fraction for percentile clipping
+COMBINE.PERCENT         BOOL  FALSE     # Use a single percentile clipping?
+COMBINE.REJECT.FRACTION F32   0.32      # fraction of outliers to reject in percentile clipping
+                                        # Note this is the total both above and below the median
 
 MASK.VAL	STR	MASK.VALUE,CONV.BAD,GHOST # Mask value of input bad pixels
@@ -18,4 +18,6 @@
 MASK.POOR	STR	CONV.POOR	# Mask value to give poor pixels
 MASK.BLANKBORDER S32    0               # Mask blank border in final stack output (may want to set KERNEL.SIZE)
+
+SKIP.MISSING.INPUTS BOOL FALSE          # If some input warp images are missing, make the stack anyway
 
 # we are in some danger of inconsistency in the definition of a 'bad' vs a 'suspect' pixel
@@ -113,4 +115,5 @@
 OUTPUT.NOCOMP   BOOL    FALSE           # use filerules that make conconpressed outputs
 OUTPUT.LOGFLUX  BOOL    FALSE           # choose a log-scaling for output images
+OUTPUT.DEEPEXP  BOOL    FALSE           # allow exptime maps with dynamic range up to 2^16 (64k) seconds
 
 OUTPUT.REPLICATE BOOL   TRUE
@@ -227,7 +230,12 @@
 END
 
-
-
-
+STACK_UNIONS_DR3 METADATA
+  COMBINE.PERCENT     BOOL TRUE  # Use a single percentile clipping?
+  SKIP.MISSING.INPUTS BOOL TRUE  # If some input warp images are missing, make the stack anyway
+  CONVOLVE	      BOOL FALSE # Convolve images when stacking?
+  OUTPUT.NOCOMP       BOOL FALSE # use filerules that make compressed outputs
+  OUTPUT.LOGFLUX      BOOL TRUE  # choose a log-scaling for output images
+  OUTPUT.DEEPEXP      BOOL TRUE  # allow exptime maps with dynamic range up to 2^16 (64k) seconds
+END
 
 TEST1 METADATA