WhatsApp allows you to make formatting changes to your messages. You can italicize, bold or strikethrough (cross out) selected text.
Italicizing Your Messages
To italicize your message, place an underscore on both sides of the text, like this:
Bolding Your Messages
To bold your message, place an asterisk on both sides of the text, as shown below:
Striking Through Your Messages
To strike through your message, place a tilde on both sides of the text, as this: