This document discusses the rules of the Saxon genitive in English. It explains that the Saxon genitive is used to indicate possession. The rules are that if there is a single possessor, the structure is "possessor's possessed item." If the possessor's name ends in s, an additional s is added. If there are multiple possessors, the structure is "possessors' possessed item." The document provides examples and links for further information, followed by a practice section with exercises applying the Saxon genitive.