What does the "Undo" function do?

The "Undo" function is an essential feature in many software applications, particularly in word processors and text editing tools. It allows users to reverse the most recent action they took, whether it's typing text, deleting content, formatting changes, or any other modification made to the document. This capability is incredibly useful for correcting mistakes or recovering from unintended actions without having to manually recreate or modify work. By activating the "Undo" function, users can effectively revert their document to its previous state, improving efficiency and reducing frustration during the editing process.