Original: It comprises the eastern half of the island of Timor, the nearby islands of Atauro and Jaco, and Oecussi-Ambeno, an exclave  on the northwestern side of the island, within Indonesian West Timor.
Simplified: It is on the eastern side of the island of Timor, and also the smaller islands of Atauro and Jaco, and a small area, named Oecussi-Ambeno, inside the west side of Timor.