Church Slavonic, also known as Church Slavic, New Church Slavonic or New Church Slavic, is the conservative Slavic liturgical language used by the Orthodox Church in Bulgaria, Poland, the Czech Republic and Slovakia, Russia, Belarus, Serbia, Montenegro, Bosnia and Herzegovina, the Republic of Macedonia and Ukraine.
The Codex Suprasliensis is a 10th-century Cyrillic literary monument, the largest extant Old Church Slavonic canon manuscript and the oldest Slavic literary work in Poland.
Cyrillic numerals are a numeral system derived from the Cyrillic script, developed in the First Bulgarian Empire in the late 10th century.
The Cyrillic script is a writing system used for various alphabets across Eurasia (particularity in Eastern Europe, the Caucasus, Central Asia, and North Asia).
The Enina Apostle or Enina Apostolos (scholarly abbreviation Enin) is an 11th-century Old Church Slavonic Cyrillic manuscript.
The Glagolitic script (Ⰳⰾⰰⰳⱁⰾⰹⱌⰰ Glagolitsa) is the oldest known Slavic alphabet.
Mostich (Мостич, Old Bulgarian: МОСТИЧЬ) was a high-ranking official in the 10th-century First Bulgarian Empire, during the rule of Simeon I and Peter I. He bore the title of Ichirgu-boil and was most likely the commander of the state capital Preslav's garrison.