The document discusses the fields of syntax, semantics, and pragmatics. It states that syntax studies linguistic forms and structures, semantics studies the relationship between linguistic forms and real-world entities, and pragmatics studies the relationship between linguistic forms and their users. It also explains that pragmatics developed to study aspects of language use that were not easily addressed by formal systems focused on syntax and semantics. Pragmatics examines how people understand meaning based on context and shared experiences.