--- a/lib/iec_types_all.h	Wed Dec 02 16:11:01 2009 +0100
+++ b/lib/iec_types_all.h	Wed Dec 02 19:55:23 2009 +0100
@@ -13,6 +13,10 @@
 #define TRUE 1
 #define FALSE 0
 
+#define DEBUG_FLAG 1
+#define FORCE_FLAG 2
+#define RETAIN_FLAG 4
+
 #define __DECLARE_IEC_TYPE(type)\
 typedef IEC_##type type;\
 \