sentences:  The commentaries are known as "Or Hadash" ("A New Light").The original "Siddur Sim Shalom" was edited by Rabbi Jules Harlow, and published in 1985.It succeeded the movement's first Shabbat siddur, "Sabbath and Festival Prayer Book" ("Siddur Tefilot Yisrael"), by Rabbi Morris Silverman, edited by a commission chaired by Rabbi Robert Gordis and first published in 1946.