EN
Studying of Old Slavonic, Church Slavonic, their genesis, Old Slavonic and Church Slavonic marks, Old Slavonic writing, is the entrance to Slavic but also to studying of individual Slavic languages. Even though we are separated from creation of Slavistic as a science discipline by almost two hundred and fifty years, the scientists keep their attention turning back to those basic Slavistic themes because then we can better understand principles of synchronically and diachronically development of present Slavic languages. Also in new united Europe is Old Slavonic, as first standard Slavic language from the 9th century, mark of cultural commonality of Slavs and it is evidence of the fact that Slavic nations had participated largely on cultural development of European nations from dawn of their history.