Index: generic/xotclInt.h
===================================================================
diff -u -rc6066a15de738754028991b2b57b8f1d5a1cccaa -r5524b83ed5dda30e55f7a02e4c22d26783688954
--- generic/xotclInt.h	(.../xotclInt.h)	(revision c6066a15de738754028991b2b57b8f1d5a1cccaa)
+++ generic/xotclInt.h	(.../xotclInt.h)	(revision 5524b83ed5dda30e55f7a02e4c22d26783688954)
@@ -356,13 +356,20 @@
 /* flags for XOTclParams */
 
 #define XOTCL_ARG_REQUIRED		     0x0001
-#define XOTCL_ARG_SUBST_DEFAULT		     0x0002
-#define XOTCL_ARG_INITCMD		     0x0004
-#define XOTCL_ARG_METHOD		     0x0008
-#define XOTCL_ARG_NOARG 		     0x0010
+#define XOTCL_ARG_MULTIVALUED		     0x0002
+#define XOTCL_ARG_NOARG 		     0x0004
+#define XOTCL_ARG_SUBST_DEFAULT		     0x0010
+#define XOTCL_ARG_INITCMD		     0x0020
+#define XOTCL_ARG_METHOD		     0x0040
 #define XOTCL_ARG_RELATION		     0x0100
-#define XOTCL_ARG_MULTIVALUED		     0x0200
+#define XOTCL_ARG_SWITCH		     0x0200
 
+/* disallowed options */
+#define XOTCL_DISALLOWED_ARG_METHOD_PARAMETER	     (XOTCL_ARG_METHOD|XOTCL_ARG_INITCMD|XOTCL_ARG_RELATION)
+#define XOTCL_DISALLOWED_ARG_OBJECT_PARAMETER	     0
+#define XOTCL_DISALLOWED_ARG_VALUEECHECK	     (XOTCL_ARG_SUBST_DEFAULT|XOTCL_ARG_METHOD|XOTCL_ARG_INITCMD|XOTCL_ARG_RELATION|XOTCL_ARG_SWITCH)
+
+
 /* method types */
 #define XOTCL_METHODTYPE_ALIAS     0x0001
 #define XOTCL_METHODTYPE_SCRIPTED  0x0002
@@ -372,9 +379,6 @@
 #define XOTCL_METHODTYPE_OTHER     0x0100
 #define XOTCL_METHODTYPE_BUILTIN   XOTCL_METHODTYPE_ALIAS|XOTCL_METHODTYPE_SETTER|XOTCL_METHODTYPE_FORWARDER|XOTCL_METHODTYPE_OBJECT|XOTCL_METHODTYPE_OTHER
 
-/* disallowed options */
-#define XOTCL_ARG_METHOD_PARAMETER	     (XOTCL_ARG_RELATION)  /* maybe add ARG_INITCMD */
-#define XOTCL_ARG_OBJECT_PARAMETER	     0
 
 /* flags for parseContext */
 #define XOTCL_PC_MUST_DECR		     0x0001