Undo and Redo

Virtually all actions in Reason can be undone. This includes creation, deletion and reordering of devices in the rack, parameter value adjustments, recording and editing in the sequencer etc. You can undo hundreds of actions.

To undo the latest action, select “Undo” from the Edit menu, or hold down [Ctrl](Win) or [Cmd](Mac) and press [Z].

The action to be undone is indicated next to the Undo command on the Edit menu. For example, if your latest action was to delete some device(s) from the rack, the Edit menu will display “Undo Delete Devices and Tracks”.

To redo the last undone action (“undo the undo operation”), select “Redo” from the Edit menu, or hold down [Ctrl](Win) or [Cmd](Mac) and press [Y].

Similarly, the action to be redone is shown on the Edit menu.

About multiple Undos and Redos

The concept of multiple undos may require an explanation.

Let’s say you have performed the following actions:

1.	Created a Mixer device.

2.	Created a synth device.

3.	Adjusted the Attack parameter of the synth device.

4.	Changed the panning for the synth device in the Mixer.

5.	Adjusted the playback tempo on the Transport Panel.

After these five actions, the Undo History will look as follows:

| UNDO

5. Adjust tempo

4. Change pan

3. Adjust Attack

2. Create Synth Device

1. Create Mixer Device

If you now select Undo, your latest action (the tempo change) will be undone, and moved to a “Redo list”:

| UNDO	| REDO
4. Change pan
3. Adjust Attack
2. Create Synth Device
1. Create Mixer Device	5. Adjust tempo

Selecting Undo again undoes the next action in the list (the panning adjustment):

| UNDO	| REDO
3. Adjust Attack
2. Create Synth Device	4. Change pan
1. Create Mixer Device	5. Adjust tempo

If you now select Redo, the most recently undone action will be redone. In this case, your panning adjustment will be performed again (and added to the Undo History again):

| UNDO	| REDO
4. Change pan
3. Adjust Attack
2. Create Synth Device
1. Create Mixer Device	5. Adjust tempo

At this point, you still have the option to Redo the tempo change. But if you instead perform another action (e.g. change the level of the synth device in the mixer), this would become the action at the top of the Undo History - and the Redo list would be cleared.

| UNDO	| REDO
5. Change level
4. Change pan
3. Adjust Attack
2. Create Synth Device
1. Create Mixer Device	(Empty)

You can no longer redo the “undone” tempo change!