Index: trunk/ippTools/src/stacktoolConfig.c
===================================================================
--- trunk/ippTools/src/stacktoolConfig.c	(revision 18093)
+++ trunk/ippTools/src/stacktoolConfig.c	(revision 18148)
@@ -91,4 +91,8 @@
     psMetadataAddF64(queueArgs, PS_LIST_TAIL, "-select_solang_max",  0,
             "define max solar angle", NAN);
+    psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-random_subset",  0,
+            "use a random subset of elements", false);
+    psMetadataAddS32(definebyqueryArgs, PS_LIST_TAIL, "-random_limit",  0,
+            "use this number of random elements", 20);
 
     psMetadataAddBool(queueArgs, PS_LIST_TAIL, "-all",  0,