For example, you can edit past messages to strikethrough anything that you want to take back. You can bold or italicize text that you want to highlight — or you can underline it.

Associated Press style calls for italics only when we use foreign words or expressions. If you want to know whether a newspaper capitalizes "the," check its Website. Some do; some don’t.

For example, if you want to italicize the word "Hi," you would write it as "Hi" without the quotation marks. Press "Enter" to send the text.