Tosafot

The first page of the Vilna Edition Shas of the Babylonian Talmud, tractate Berakhot, folio 2a.
The main text in the middle is the text of the Talmud itself. To the right, on the inner margin of the page, is Rashi's commentary; to the left, on the outer margin, the Tosafot

The Tosafot, Tosafos or Tosfot (Hebrew: תוספות) are medieval commentaries on the Talmud. They take the form of critical and explanatory glosses, printed, in almost all Talmud editions, on the outer margin and opposite Rashi's notes.

The authors of the Tosafot are known as Tosafists (בעלי התוספות); for a listing see List of Tosafists.[citation needed]