Index: trunk/ppStats/src/ppStatsSetupFromArgs.c
===================================================================
--- trunk/ppStats/src/ppStatsSetupFromArgs.c	(revision 18061)
+++ trunk/ppStats/src/ppStatsSetupFromArgs.c	(revision 19356)
@@ -86,4 +86,5 @@
     psMetadataAddStr(arguments, PS_LIST_TAIL, "-header", PS_META_DUPLICATE_OK, "Header to look up", NULL);
     psMetadataAddStr(arguments, PS_LIST_TAIL, "-concept", PS_META_DUPLICATE_OK, "Concept to look up", NULL);
+    psMetadataAddStr(arguments, PS_LIST_TAIL, "-summary", PS_META_DUPLICATE_OK, "Summary statistic to calculate", NULL);
     psMetadataAddBool(arguments, PS_LIST_TAIL, "-mean", 0, "Calculate sample mean", false);
     psMetadataAddBool(arguments, PS_LIST_TAIL, "-stdev", 0, "Calculate sample standard deviation", false);
@@ -123,4 +124,5 @@
     listFromArguments(arguments, "Header", "-header", data->headers);
     listFromArguments(arguments, "Concept", "-concept", data->concepts);
+    listFromArguments(arguments, "Summary", "-summary", data->summary);
 
     // Set the statistics options