Index: doc/example-scripts/tk-spread.tcl
===================================================================
diff -u -r7899713fc59e73e74af1586fa84b0b690bb9b2e7 -r1711d2463a88d72589e00a87b0a0842cf8e7f9fa
--- doc/example-scripts/tk-spread.tcl	(.../tk-spread.tcl)	(revision 7899713fc59e73e74af1586fa84b0b690bb9b2e7)
+++ doc/example-scripts/tk-spread.tcl	(.../tk-spread.tcl)	(revision 1711d2463a88d72589e00a87b0a0842cf8e7f9fa)
@@ -1,5 +1,5 @@
 # A small Spreadsheet implementation, originally developed by Richard
-# Suchenwirth in plain Tcl (see http://wiki.tcl.tk/1287). The
+# Suchenwirth in plain Tcl (see http://wiki.tcl-lang.org/1287). The
 # spreadsheet was rewritten in an object oriented manner as a design
 # study in NX by Gustaf Neumann in May 2011.
 #
@@ -31,7 +31,7 @@
    #
    # Use the nx callback trait 
    #
-   :require trait nx::traits::callback
+   :require trait nx::trait::callback
    
    #
    # The method "cell" hides the internal respresentation and sets a