Index: /trunk/ippconfig/ipprc.config.in
===================================================================
--- /trunk/ippconfig/ipprc.config.in	(revision 13341)
+++ /trunk/ippconfig/ipprc.config.in	(revision 13342)
@@ -71,3 +71,4 @@
 	PSWARP		STR		recipes/pswarp.config   # Warping
 	PPSIM		STR		recipes/ppSim.config	# Simulations
+	PPSUB		STR		recipes/ppSub.config	# Subtraction
 END
Index: /trunk/ippconfig/recipes/ppSub.config
===================================================================
--- /trunk/ippconfig/recipes/ppSub.config	(revision 13342)
+++ /trunk/ippconfig/recipes/ppSub.config	(revision 13342)
@@ -0,0 +1,14 @@
+### Recipe file for ppSub
+
+KERNEL.TYPE	STR	POIS		# Kernel type to use (POIS|ISIS)
+KERNEL.SIZE     S32	5		# Kernel half-size (pixels)
+SPATIAL.ORDER   S32	0		# Spatial polynomial order
+STAMP.SPACING   F32	300		# Typical spacing between stamps (pixels)
+STAMP.FOOTPRINT S32	5		# Size of stamps (pixels)
+STAMP.THRESHOLD F32	0		# Flux threshold for stamps (ADU)
+ITER            S32	10		# Number of rejection iterations
+REJ             F32	2.5		# Rejection level (std dev)
+MASK.BAD        U8	0xff		# Mask value for bad pixels
+MASK.BLANK      U8	0xff		# Mask value to give blank pixels
+@ISIS.WIDTHS	F32	1 3 9		# Gaussian widths for ISIS kernels
+@ISIS.ORDERS	S32	6 4 2		# Polynomial orders for ISIS kernels