Undo facility in NetBeans 5.5 UML

I've been playing around with NetBeans IDE 5.5b2 UML modelling tool. So far, so impressive, except that there doesn't appear to be an undo/redo facility in the diagram editor. There's certainly nothing on the UML diagram toolbar, nor do the main IDE Edit Undo/Redo functions become available while editing a UML diagram.

Am I missing something, or is this facility not there?

[391 byte] By [jusi] at [2007-11-26 10:23:01]