Index: trunk/ippconfig/recipes/ppSub.config
===================================================================
--- trunk/ippconfig/recipes/ppSub.config	(revision 31435)
+++ trunk/ippconfig/recipes/ppSub.config	(revision 32674)
@@ -219,4 +219,13 @@
 END
 
+SSTF_DIFF METADATA
+	DUAL		BOOL	FALSE	# Dual convolution?
+	INVERSE		BOOL	FALSE   # Generate inverse subtraction?
+	PHOTOMETRY	BOOL	TRUE	# Perform photometry?
+	NOCONVOLVE      BOOL    TRUE
+	CONVOLVE.TARGET STR     SINGLE2	# convolution direction
+END
+ 
+
 # Gene's choice: multiplying by 1.75
 #@ISIS.WIDTHS	F32	1.8 3.3 5.8 10.2 17.9	# Gaussian FWHMs for ISIS kernels