Although both santri and abangan Javanese participate in slametans, the abangan Javanese put more emphasis on invoking ancestor spirits, whereas, for the santri Javanese, God is more likely to be the spiritual center of the event.However, since Sufis in the Muslim world outside Indonesia follow practices that have parallels in Indonesian Muslim life (such as praying at graves), the theoretical division between santri and abangan may not always hold. One can be a full follower of Islam, and still also follow mystical beliefs.The traditional Javanese belief in spirits is called kebatinan. It includes some Hindu, Buddhist, Muslim (especially Sufi), and animist beliefs.For example, aside from slametan, one who wishes to gain power in training for pencak silat, or for other reasons, may undergo austerities (such as fasting) and meditate in a quiet place for some time. This corresponds to the Hindu-Buddhist model of asceticism, although some Sufi saints similarly perform austerities in isolation.In this way, Islamic doctrine and local adat (kebatinan) converge in the Javanese context, and in Indonesia as a whole. That is, both traditions allow for the likelihood that personal problems can be the result of spirit affliction, but in Indonesia this situation is taken more seriously because of the longstanding tradition there of spirit worship.Nowadays, due to urbanization, globalization, public education, and more generally the popularization of Islam in a standard international form, the older syncretic (= mixing traditions) kind of worship is becoming less prevalent.