The Undo button , cancels your previous action and the Redo button reverses your previous Undo action. The Undo actions are listed as a dropdown list. By default, you can undo or redo the last 20 actions.
NOTE
The Undo button is only active after you perform certain actions in the active pane (only some actions can be undone; see the list that follows this Note).
The Redo button is active after performing an undo action. The Redo function reverses the previous undo action unless a new function is performed in between.
TIP
You can undo multiple actions at the same time using the dropdown arrow to the right of the Undo button. When you select an action from this list to undo, all actions performed prior to the selected action are also undone. The Redo function reverses the previous undo action in the order in which they were performed.
You can undo or redo the following actions:
- Display the scan corresponding to a particular retention time point
- Change the zoom level of a Chromatogram view
- Change the zoom level in a Spectrum view
- Add a chromatogram trace from the Ranges dialog box
- Delete a trace in the Ranges dialog box
- Define a chromatogram trace in the Ranges dialog box
- Display the Peak Detection page
- Label spectrum peaks
- Average a spectrum