Index: generic/xotclInt.h
===================================================================
diff -u -rb8af431b779825e6d2cfa7a8b334158da1ea9370 -rc0b363cae9d43d3cb564b230233cc211470acd7e
--- generic/xotclInt.h	(.../xotclInt.h)	(revision b8af431b779825e6d2cfa7a8b334158da1ea9370)
+++ generic/xotclInt.h	(.../xotclInt.h)	(revision c0b363cae9d43d3cb564b230233cc211470acd7e)
@@ -364,6 +364,7 @@
 #define XOTCL_ARG_METHOD		     0x0040
 #define XOTCL_ARG_RELATION		     0x0100
 #define XOTCL_ARG_SWITCH		     0x0200
+#define XOTCL_ARG_HAS_DEFAULT		     0x1000
 
 /* disallowed options */
 #define XOTCL_DISALLOWED_ARG_METHOD_PARAMETER	     (XOTCL_ARG_METHOD|XOTCL_ARG_INITCMD|XOTCL_ARG_RELATION)