Undo and Redo

Undo cancels the previous change.
Redo cancels the previous undo.

I made a mistake. How do I change it back?

1. Click .

For example:

Type: I live in Halifax.

Change the font size: I live in Halifax.

Undo: I live in Halifax.

Redo: I live in Halifax

Type: I am from Mexico.

Change the font: I am from Mexico.

Undo: I am from Mexico.

Redo: I am from Mexico.