Index: trunk/ppMerge/src/ppMergeOptions.h
===================================================================
--- trunk/ppMerge/src/ppMergeOptions.h	(revision 15953)
+++ trunk/ppMerge/src/ppMergeOptions.h	(revision 16842)
@@ -21,5 +21,5 @@
     bool zero;                          // Subtract background before combining?
     bool scale;                         // Scale by the background before combining?
-    bool darktime;                      // Normalise by the dark time (time since flush)?
+    bool dark;                          // Generate dark?
     bool fringe;                        // Make fringe measurements?
     bool shutter;                       // Generate shutter correction?
@@ -37,6 +37,6 @@
     float maskSuspect;                  // Threshold for identifying suspect pixels
     float maskBad;                      // Threshold for identifying bad pixels
-    bool statsByChip;			// measure statistics for masking by chip or readout?
-    pmMaskIdentifyMode maskMode;	// how to set the limit based on the threshold value above?
+    bool statsByChip;                   // measure statistics for masking by chip or readout?
+    pmMaskIdentifyMode maskMode;        // how to set the limit based on the threshold value above?
     ppOnOff onOff;                      // On/off pairs?
     pmCombineParams *combine;           // Combination parameters
@@ -44,4 +44,5 @@
     psMaskType badMask;                 // Mask value for bad (low) pixels
     int growPixels;
+    psArray *darkOrdinates;             // Ordinates for dark combination
 } ppMergeOptions;