Index: trunk/ppMerge/src/ppMergeOptions.h
===================================================================
--- trunk/ppMerge/src/ppMergeOptions.h	(revision 16842)
+++ trunk/ppMerge/src/ppMergeOptions.h	(revision 16950)
@@ -45,4 +45,5 @@
     int growPixels;
     psArray *darkOrdinates;             // Ordinates for dark combination
+    psString darkNorm;                  // Dark normalisation concept
 } ppMergeOptions;