Index: /trunk/psphot/src/psphotArguments.c
===================================================================
--- /trunk/psphot/src/psphotArguments.c	(revision 10166)
+++ /trunk/psphot/src/psphotArguments.c	(revision 10167)
@@ -92,4 +92,16 @@
 
     // other arbitrary recipe values: -Df key value (all added as float)
+    while ((N = psArgumentGet (argc, argv, "-Db"))) {
+        psArgumentRemove (N, &argc, argv);
+	if (!strcasecmp (argv[N+1], "true")) {
+	    psMetadataAddBool (options, PS_LIST_TAIL, argv[N], 0, "", true);
+	} else {
+	    psMetadataAddBool (options, PS_LIST_TAIL, argv[N], 0, "", false);
+	}
+        psArgumentRemove (N, &argc, argv);
+        psArgumentRemove (N, &argc, argv);
+    }
+
+    // other arbitrary recipe values: -Df key value (all added as float)
     while ((N = psArgumentGet (argc, argv, "-Df"))) {
         psArgumentRemove (N, &argc, argv);