Index: generic/predefined.h
===================================================================
diff -u -r8046b1da6bc0689f73d4dbdc3f8d1e03fd23acaf -re52f2dd0f35e8a12230a20e90575f242da4e0e5c
--- generic/predefined.h	(.../predefined.h)	(revision 8046b1da6bc0689f73d4dbdc3f8d1e03fd23acaf)
+++ generic/predefined.h	(.../predefined.h)	(revision e52f2dd0f35e8a12230a20e90575f242da4e0e5c)
@@ -40,6 +40,9 @@
 "proc get {key}         {return $::nsf::object::unknown($key)}\n"
 "proc delete {key}      {array unset ::nsf::object::unknown($key)}\n"
 "proc keys {}           {array names ::nsf::object::unknown}}\n"
+"namespace eval ::nsf::argument {}\n"
+"proc ::nsf::argument::unknown {args} {\n"
+"return \"\"}\n"
 "proc ::nsf::exithandler {args} {\n"
 "lassign $args op value\n"
 "switch $op {\n"