This document discusses different discourse markers used to indicate result, reason, purpose, and contrast. It provides examples of how each marker is used to introduce clauses and sentences. For result, it discusses markers like "so" and "as a result". For reason, it covers markers like "because", "since", and "owing to". For purpose, it lists "to", "in order to", and "so as to". For contrast, it examines contrastive markers like "but", "however", "although", and "despite".