Index: doc/example-scripts/ruby-mixins.tcl
===================================================================
diff -u -r12319faaf20df7116346558bd948b0edda9124eb -r3cbf24ff95e38976cdc905ec0e8014d9d754ad6f
--- doc/example-scripts/ruby-mixins.tcl	(.../ruby-mixins.tcl)	(revision 12319faaf20df7116346558bd948b0edda9124eb)
+++ doc/example-scripts/ruby-mixins.tcl	(.../ruby-mixins.tcl)	(revision 3cbf24ff95e38976cdc905ec0e8014d9d754ad6f)
@@ -32,7 +32,7 @@
 
 nx::Class eval {
   :protected method module {name:class} {
-    nsf::relation [self] superclass [concat $name [:info superclass]]
+    nsf::relation::set [self] superclass [concat $name [:info superclass]]
   }
 }