It used to be the standard for many many years that each in-text quotation of a Biblical verse in the Vilna edition Talmud Bavli had a little circle before the first word, which corresponded to a citation called Torah Or directly to the right or left that provided the source chapter. In newer, retypeset, laser-printed editions of the same, this system has been replaced by a numeric footnoting system that refers one to the lower margin of the page where the full pointed text and chapter:verse citation are given, called Torah Or Hashalem.
As great as it is to have all this information at one's fingertips instead of having to search a whole chapter for the relevant words, I really miss the instant recognizability and ease of use of the old system, especially the little circles. Do any of the fancy new printings use the circles?