Index: trunk/ppStack/src/ppStack.h
===================================================================
--- trunk/ppStack/src/ppStack.h	(revision 23143)
+++ trunk/ppStack/src/ppStack.h	(revision 23171)
@@ -140,6 +140,6 @@
 psString ppStackVersionLong(void);
 
-// Supplement metadata with software version
-void ppStackVersionMetadata(psMetadata *metadata // Metadata to supplement
+// Supplement header with software version
+bool ppStackVersionHeader(psMetadata *header // Header to supplement
     );
 
Index: trunk/ppStack/src/ppStackLoop.c
===================================================================
--- trunk/ppStack/src/ppStackLoop.c	(revision 23143)
+++ trunk/ppStack/src/ppStackLoop.c	(revision 23171)
@@ -1213,5 +1213,5 @@
         hdu->header = psMetadataAlloc();
     }
-    ppStackVersionMetadata(hdu->header);
+    ppStackVersionHeader(hdu->header);
 
     psFree(outRO);
Index: trunk/ppStack/src/ppStackVersion.c
===================================================================
--- trunk/ppStack/src/ppStackVersion.c	(revision 23143)
+++ trunk/ppStack/src/ppStackVersion.c	(revision 23171)
@@ -7,4 +7,5 @@
 #include <psmodules.h>
 #include <ppStats.h>
+#include <psphot.h>
 
 #include "ppStack.h"
@@ -48,32 +49,33 @@
 
 
-void ppStackVersionMetadata(psMetadata *metadata)
+bool ppStackVersionHeader(psMetadata *header)
 {
-    PS_ASSERT_METADATA_NON_NULL(metadata,);
-
-    psString pslib = psLibVersionLong();// psLib version
-    psString psmodules = psModulesVersionLong(); // psModules version
-    psString ppStats = ppStatsVersionLong(); // ppStats version
-    psString ppStack = ppStackVersionLong(); // ppStack version
+    PS_ASSERT_METADATA_NON_NULL(header, false);
 
     psTime *time = psTimeGetNow(PS_TIME_TAI); // The time now
     psString timeString = psTimeToISO(time); // The time in an ISO string
     psFree(time);
-    psString head = NULL;               // Head string
-    psStringAppend(&head, "ppStack processing at %s. Component information:", timeString);
+    psString history = NULL;               // History string
+    psStringAppend(&history, "ppStack at %s", timeString);
     psFree(timeString);
+    psMetadataAddStr(header, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, NULL, history);
+    psFree(history);
 
-    psMetadataAddStr(metadata, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, "", head);
-    psMetadataAddStr(metadata, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, "", pslib);
-    psMetadataAddStr(metadata, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, "", psmodules);
-    psMetadataAddStr(metadata, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, "", ppStats);
-    psMetadataAddStr(metadata, PS_LIST_TAIL, "HISTORY", PS_META_DUPLICATE_OK, "", ppStack);
+    psLibVersionHeader(header);
+    psModulesVersionHeader(header);
+    psphotVersionHeader(header);
+    ppStatsVersionHeader(header);
 
-    psFree(head);
-    psFree(pslib);
-    psFree(psmodules);
-    psFree(ppStats);
-    psFree(ppStack);
+    psString version = ppStackVersion(); // ppImage software version
+    psString source  = ppStackSource();  // ppImage software source
 
-    return;
+    psMetadataAddStr(header, PS_LIST_TAIL, "IPP.PPSTACK.VERSION", PS_META_REPLACE,
+                     "Software version", version);
+    psMetadataAddStr(header, PS_LIST_TAIL, "IPP.PPSTACK.SOURCE", PS_META_REPLACE,
+                     "S/W source", source);
+
+    psFree(version);
+    psFree(source);
+
+    return true;
 }