The Discourses, the Enchiridion, and the fragments by the same translator under a single style guide — so the voice that interrupts, needles, and consoles in Book 1 is the same voice in the handbook, where most editions give you the Discourses from one century and the Enchiridion from another.

Presented as the corpus actually formed: first the four books of classroom talk Arrian wrote down around AD 108, then the Enchiridion he distilled from them a generation later, then the fragments that survive from the lost books — so you can watch a living teacher's improvisations harden into the pocket manual that made him famous, instead of meeting the summary before the man.

A glossary of every named person, place, and school, the Greek facing the text section by section, and a cross-reference index — generated from the same structured source files as the prose. Plain digital editions of Epictetus have none of it.

Translated by reading Arrian's Greek directly (Schenkl's text via the Perseus Digital Library), not by adapting a Victorian English version. The famous lines are re-derived from the source, not inherited.