Before Jin's departure on the raft, Sun gave him a notebook that listed several phonetically spelled English words in Korean (at least five words were written on the first page). This was to help Jin communicate with Sawyer and Michael. Sun's actions in preparing the notebook for her husband made him realize how much she still cared for him, and gave him further reason to leave on the raft; Jin wanted to get rescued to save Sun. ("Exodus, Part 1") The notebook was titled "Korean Dictionary" (영한 사전 Yeonghan Sajeon) on the first page. It was presumably destroyed when the Others blew up the raft.