 Each title of the series includes an introduction, notes and a critical apparatus, as well as a facing-page French translation, comparable to the Loeb Classical Library in the English-speaking world, but with considerably more detailed introductions, apparatus, and critical or explanatory annotations.Some titles even comprise full-scale commentaries.The Greek authors in the series can be recognized by a yellow cover on which Athena's little owl can be seen, the Latin ones by a red one where one finds a she-wolf reminiscent of the Capitoline Wolf.