--- rpl/src/usages.h	2010/05/24 10:58:37	1.15
+++ rpl/src/usages.h	2010/07/14 14:19:40	1.18
@@ -1,6 +1,6 @@
 /*
 ================================================================================
-  RPL/2 (R) version 4.0.16
+  RPL/2 (R) version 4.0.18
   Copyright (C) 1989-2010 Dr. BERTRAND Joël
 
   This file is part of RPL/2.
@@ -184,7 +184,7 @@ static unsigned char *usages[] =
 				"SWAPCNTXT",
 			USAGES_RC,
 			USAGES_TITRE, "Misc", "Instructions diverses",
-				"<<", ">>", "ABORT", "ALARM",
+				"<<", ">>", "ABORT", "ALARM", "BACKTRACE",
 				"CONVERT", "COPYRIGHT", "DATE",
 				"HELP", "IMPLICIT", "ITRACE",
 				"JDATE", "KILL",