Undo an action
 
You can correct mistakes in the document by using undo. This action will undo your last action.

For example -
If a paragraph is deleted by mistake, instead of retyping the whole text again, you can cancel the delete action using this tool.
 
Tip -
If you hold down the Ctrl key while dragging text, you can copy the text, instead of moving it, to the new location. This action is similar to copy-paste method; and text is not deleted from its original location.
1
 
Let's delete the text and cancel the action by using Undo tool.
2
Select the first line Letter to change the address in the word document by clicking the left button of the mouse at the begining of the sentence.
And press Delete key on the keyboard.