keys. There is an option to trigger the Undo with the Edit → Undo

menu.

To go back and redo an action, you can use the Redo option, which

works using the SHIFT+CTRL+Z keys. Another useful tool in Blender is

the Repeat Last option, which you can trigger using the SHIFT+R keys.

The Repeat Last can become useful in some modeling tasks. For

instance, if you move an object six units in the X-axis and press

SHIFT+R, you will get the same operation repeated.

Instead of applying a single move transformation, you can press

SHIFT+R multiple times to repeat the operation.

An essential option regarding undo and redos involve the editing history

that Blender keeps for each file you are working at. It is possible to

access that history at any moment using the Edit → Undo History

menu. By choosing that option, you see a list with all recent actions from

that file (Figure 2.10).

Figure 2.10 - Undo history