Index: generic/nsfError.c
===================================================================
diff -u -r8a6eddd18d929736bd1d3fefe985c2b1f2963fc0 -rd9344280c05990c0254aa652a08a09da3e5822b1
--- generic/nsfError.c	(.../nsfError.c)	(revision 8a6eddd18d929736bd1d3fefe985c2b1f2963fc0)
+++ generic/nsfError.c	(.../nsfError.c)	(revision d9344280c05990c0254aa652a08a09da3e5822b1)
@@ -29,7 +29,8 @@
 #include "nsfInt.h"
 
 /* function prototypes */
-Tcl_Obj *NsfParamDefsSyntax(Nsf_Param CONST *paramPtr);
+Tcl_Obj *NsfParamDefsSyntax(Tcl_Interp *interp, Nsf_Param CONST *paramsPtr, NsfObject *contextObject) 
+  nonnull(1) nonnull(2) returns_nonnull;
 
 /*
  *----------------------------------------------------------------------
@@ -287,7 +288,7 @@
 int
 NsfArgumentError(Tcl_Interp *interp, CONST char *errorMsg, Nsf_Param CONST *paramPtr,
               Tcl_Obj *cmdNameObj, Tcl_Obj *methodObj) {
-  Tcl_Obj *argStringObj = NsfParamDefsSyntax(paramPtr);
+  Tcl_Obj *argStringObj = NsfParamDefsSyntax(interp, paramPtr, NULL);
 
   assert(interp);
   assert(errorMsg);
@@ -341,7 +342,7 @@
  *
  * NsfUnexpectedNonposArgumentError --
  *
- *      Produce a unexpecte argument number (most likely, too many arguments)
+ *      Produce an error message about an invalid nonposistional argument.
  *
  * Results:
  *      TCL_ERROR