The document discusses the geographic scope and legal definitions of the Philippine archipelago and its territorial waters. It defines the archipelago as including all islands and waters within, as well as other territories over which the Philippines has sovereignty. It also explains the different zones of waters surrounding the archipelago, including the territorial sea, exclusive economic zone (EEZ), and high or open seas. The EEZ extends 200 nautical miles from the archipelago's baselines. The archipelagic doctrine defines the waters within and between the islands as internal waters subject to Philippine sovereignty.