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 The alphabet was in use until the 17th century, when it was superseded by the Cyrillic script.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
Clear script Clear script Clear Script (, "tod biçg"; "tod bichig", , "Todo besheg", or just todo) is an alphabet created in 1648 by the Oirat Buddhist monk Zaya Pandita for the Oirat language. It was developed on the basis of the Mongolian script with the goal of distinguishing all sounds in the spoken language, and to make it easier to transcribe Sanskrit and the Tibetic languages. Clear Script is a Mongolian script, whose obvious closest forebear is vertical Mongolian. This Mongolian script was derived from the Old Uyghur alphabet, which itself was descendent from the Aramaic alphabet. Aramaic is an abjad,