Three marks of existence (Pali, ti-lakkhana; Sanskrit, tri-laksana) in Buddhism is the collective term for three characteristics of all beings: anicca, “impermanence,” dukkha, “suffering,” and anatta, “no-self.”
The three marks are: sabbe sa?kh?r? anicc? sa?kh?ras are impermanent, sabbe sa?kh?r? dukkh? — “all sa?kh?ras are suffering no unsatisfactory, sabbe dhamm? anatt? — “all dharmas are not self”
Although each comprise a topic of meditation in its own right conceptually they are interrelated: there is “no-self” because there is “impermanence,” and because there is “impermanence” there is “suffering.”
The reflection upon dukkha serves to dispel the illusions about the world and of life. A.G.H.
Bowker, John, The Oxford Dictionary of World Religions, New York, Oxford University Press, 1997, p. 973