In the context of computer generated (typed) text, identify the odd non-verbal clue from the following :

A digital icon or a sequence of keyboard symbols that serves to represent a facial expression, as :‐) for a smiling face.Emoticons short for "emotion icon" are used in a digital message or text to convey the writer’s emotions or clarify intent. Or,It is a pictorial representation of a facial expression using characters—usually punctuation marks, numbers, and LETTERS—to express a person's feelings or mood, or as a time-saving.Bold or bold FONT is any text that is darkened to help emphasize a remark or comment. For example, this is a bold text. If your browser supports bold text, the PREVIOUS words "bold text" is in bold lettering.Italic is a style of font that slants the letters evenly to the right. For example, this sentence is ITALICIZED. When a font is installed on a computer, there will be an italic version.Underline is to draw a line under a word, especially in order to show its IMPORTANCE. The quickest way to underline text is to press Ctrl+U and start typing. When you want to stop underlining, press Ctrl+U again.From the above definitions, one can easily conclude that emoticon is the odd non-verbal clue.