Undoing the Last Action on a Diagram

You can undo and redo the most recent graphical actions you have made in a diagram. Graphical actions are those that change the appearance of elements on the diagram surface, such as:

cutting and pasting elements on class diagrams
altering the position and size of diagram elements
changing the font, color, and line width of diagram elements

Note: Any change to a diagram element that is not purely graphical, such as changing the properties of that element, cannot be undone. Changing the properties of an element also prevents any previous graphical changes from being undone.

To undo the last graphical action on a diagram:

Choose Edit Undo.

OR
Click the Undo icon .

To redo an previously undone graphical action on a diagram:

Choose Edit Redo.

OR
Click the Redo icon .