As is common amongst great Rabbis, he is most commonly known by the name of his popular book Noam Elimelech, a commentary on the Torah. This book is one of the principal works of Hasidism. The sefer was called Sefer Shel Tzadikim, (a Book for the Righteous) by Rabbi Shneur Zalman of Liadi (founder of the Lubavitch dynasty).
The book has asterisks or stars placed in random places over words. Tradition has it that these stars have some meaning. In Devarim Areivim (another Hasidic classic), the author, Rabbi Dov Ehrmann, wrote: "In the first edition of the sefer, there are in many places small stars which allude to some secret meaning". The Klausenberger Rebbe once said that the stars in the heavens are a commentary to the stars in the book Noam Elimelech. As such, all subsequent printings have included these stars. The Noam Elimelech also wrote Tzetl Koton, a seventeen-point program on how to be a good Jew as well as Hanhagos HaAdam a list of customs for all pious Jews to follow.
Read more about this topic: Elimelech Of Lizhensk