"After consultation... with the greatest Torah scholars and grammarians, the biblical text in this edition was chosen to conform with the Aleppo Codex which as is well known was corrected by Ben-Asher(d)... Where this manuscript is not extant we have relied on the Leningrad Codex(d)... Similarly the open and closed sections(d) that are missing in the Aleppo Codex have been completed according to the biblical list compiled by Rabbi Shalom Shachna Yelin that were published in the Jubilee volume for Rabbi Breuer... (translated from the Hebrew on p. 12 of the introduction).