Aprakos
Aprakos is a kind of Gospel or Acts of the Apostles book, otherwise known as weekly or service Gospel. In aprakoses, the text is organized not in the natural order of books, but along with the weekly church readings starting from the Holy Week as used in the Eastern Orthodox Church. In particular, the text of Aprakos-Gospels begins with the first chapter of Gospel according to John, whereas regular Gospels begin with the Gospel according to Matthew. Many of the oldest Slavic manuscripts are aprakoses, like Codex Assemanius, Ostromir Gospels or Vukan's Gospel.
Similar books used in the Western Christianity are known as Lectionaries, or as Evangeliarium or Evangelistarium.
