Index: trunk/ippTools/src/difftoolConfig.c
===================================================================
--- trunk/ippTools/src/difftoolConfig.c	(revision 29553)
+++ trunk/ippTools/src/difftoolConfig.c	(revision 30070)
@@ -336,4 +336,5 @@
     psMetadataAddStr(definestackstackArgs, PS_LIST_TAIL, "-input_label", 0, "search by stack label for input", NULL);
     psMetadataAddStr(definestackstackArgs, PS_LIST_TAIL, "-template_label", 0, "search by stack label for template", NULL);
+    psMetadataAddStr(definestackstackArgs, PS_LIST_TAIL, "-input_data_group", 0, "search by stack data_group for input", NULL);
     psMetadataAddF32(definestackstackArgs, PS_LIST_TAIL, "-good_frac", 0, "minimum good fraction of skycell", NAN);
     psMetadataAddStr(definestackstackArgs, PS_LIST_TAIL, "-set_workdir", 0, "define workdir (required)", NULL);