Authors set a tone in literature by conveying emotions/feelings through words. The way a person feels about an idea/concept, event, or another person can be quickly determined through facial expressions, gestures and in the tone of voice used. In literature an author sets the tone through words. The possible tones are bounded only by the number of possible emotions a human being can have.
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Protagonist-the leading character, hero, or heroine of a drama or other literary work.
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