Aristarchus' edition is probably the single most important moment in the whole history of Homeric scholarship. His text was more conservative than Zenodotus', but it became the standard edition of Homer for the ancient world, and almost everything in modern editions of Homer passed through Aristarchus' hands. Like Zenodotus, Aristarchus did not delete passages that he rejected, but (fortunately for us) preserved them with an annotation indicating his rejection. He developed Zenodotus' already sophisticated system of critical symbols to indicate specific kinds of issues with particular lines, and a significant proportion of the terminology is still in use today (obelus, , etc.). From the scholia a great deal is known about his guiding principles, and those of other editors and commentators such as Zenodotus and Aristophanes of Byzantium. The chief preoccupations of the Alexandrian scholars may be summarised as follows: