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 The alphabet was in use until the 17th century, when it was superseded by the Cyrillic script.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
Korean mixed script interjections, exclamations and onomatopoeia in "hangul". Despite the promotion of the mixed script at the end of the Joseon Dynasty, examples of Korean mixed-script writing date back to the time King Sejong's proclamation of "hangul", which was written completely in literary Chinese, with a few "idu" passages and mixed-script passages that help 'ease' the reader into the new alphabet. The first novel in "hangul", "Yongbieocheonga" (龍飛御天歌, 용비어천가) or "Songs of the Dragons Flying to Heaven", commissioned by Sejong shortly after the proclamation of the Korean alphabet. Yi Yulgok (李栗谷, 이율곡), a Korean scholar and mathematician translated the Analects of Confucius