The Undo and Redo facilities

The Undo command can apply to the following actions:

In Style Editing mode:

Property settings

Rule changes (creation or modification using a wizard, enable/disable)

Cut or Delete operations done using the Rule Menu

Selecting/clearing an option in the Options dialog box displayed when you choose Edit>Options

In Diagram Editing mode:

Object moves

Object creation

Object deletion

Property changes in the Data Properties view

To undo one of these actions, choose Edit>Undo.

There are unlimited levels of Undo.

When you have undone an operation, you can redo it by choosing Edit>Redo.