Index: library/nx/nx.tcl
===================================================================
diff -u -rcb51d32138200e01405bb373e5dbdd4e7c1a0c0c -r99993215e25c11fa8c1467f4ee5cfd1dc71c250e
--- library/nx/nx.tcl	(.../nx.tcl)	(revision cb51d32138200e01405bb373e5dbdd4e7c1a0c0c)
+++ library/nx/nx.tcl	(.../nx.tcl)	(revision 99993215e25c11fa8c1467f4ee5cfd1dc71c250e)
@@ -935,11 +935,11 @@
     #puts stderr "... objectparameter [::nsf::self]"
     set parameterdefinitions [::nsf::parametersfromslots [::nsf::self]]
     if {[::nsf::is class [::nsf::self]]} {
-      lappend parameterdefinitions -attributes:method,optional
+      lappend parameterdefinitions -attributes:method
     }
     lappend parameterdefinitions \
-        -noinit:method,optional,noarg \
-        -volatile:method,optional,noarg \
+        -noinit:method,noarg \
+        -volatile:method,noarg \
         {*}$lastparameter
     #puts stderr "*** parameter definition for [::nsf::self]: $parameterdefinitions"
     return $parameterdefinitions