Index: doc/example-scripts/tk-locomotive.tcl
===================================================================
diff -u -r7c692cef773e19f9da59bef6498ba673cdff468e -r71e18053ef7dd9a53f11d14f3a91b8a1091e90bb
--- doc/example-scripts/tk-locomotive.tcl	(.../tk-locomotive.tcl)	(revision 7c692cef773e19f9da59bef6498ba673cdff468e)
+++ doc/example-scripts/tk-locomotive.tcl	(.../tk-locomotive.tcl)	(revision 71e18053ef7dd9a53f11d14f3a91b8a1091e90bb)
@@ -85,7 +85,7 @@
 nx::Class create Locomotive {
   :property {speed 4}
 
-  :require trait nx::traits::callback
+  :require trait nx::trait::callback
 
   :method turn {} {
     set :alpha [expr {round(${:alpha} + 360 - ${:speed}) % 360}]