# Undo, Redo, and History

The Setup > Undo, Setup > Redo, and Setup > History > menu commands let you undo or re-apply previous actions.

Choose Undo to undo the previous action.

Choose Redo to re-apply an Undo.

Hover the pointing device over an Undo or Redo command to view a small preview image that shows you the resulting display if you select the command.

When you choose Setup > History >, the history sub-menu appears, which lists each of your past actions, such as initiating an Autoscale or displaying a channel. Select the items from the sub-menu to return the instrument to a previous measurement setting. When you select an Undo item from the history list, all intervening setups are also undone.

You can erase all history sub-menu listings by choosing the Setup > History > Clear History command.