Old Permic alphabet by usual writing. The inclusion of the latter aided the alphabet in greater acceptance among the medieval Permic speakers of the time. The alphabet was in use until the 17th century, when it was superseded by the Cyrillic script. Abur was also used as cryptographic writing for the Russian language. April 26, which is the saint's day of Stephen of Perm, is celebrated as Old Permic Alphabet Day. The Abur inscriptions are among the oldest relics of the Uralic languages. Only one of them has earlier documents: Hungarian, which had been written using the Old Hungarian script first before the
Glagolitic script the same model as "alpha" + "beta". The Slavs of Great Moravia (present-day Slovakia and Moravia), Hungary, Slovenia and Slavonia were called "Slověne" at that time, which gives rise to the name Slovenish for the alphabet. Some other, rarer, names for this alphabet are Bukvitsa (from common Slavic word "bukva" meaning "letter", and a suffix "-itsa") and Illyrian. In the Middle Ages, Glagolitsa was also known as "St. Jerome's script" due to popular mediaeval legend (created by Croatian scribes in the 13th century) ascribing its invention to St. Jerome (342–429). That claim, however, has been resolutely disproven. The epoch of