How do you turn off underline?

To turn off underlining in text, you typically select the text you want to modify and then click the underline button (often represented by a "U" with a line beneath it) in your text editor's toolbar to deactivate it. Alternatively, you can use keyboard shortcuts: in many applications, pressing Ctrl+U (Cmd+U on Mac) toggles the underline on and off. If you're working with HTML, you can remove the <u> tag or ensure that the CSS property text-decoration: none; is applied to the relevant text.