Probably the most significant monument to the Croatian language relates to a stone tablet dating to the late 11th century called the Baška tablet. Discovered in the small church of St. Lucy situated on the island of Krkis, it is a large tablet containing text written principally in Croatian Glagolitic script. Today, Croatian is the official language of the Republic of Croatia and one of three official languages of Bosnia-Hezegovina. Used primarily by the Croats, Croatian is a language of the western group of South Slavic languages, yet it is only one of the standard varieties of the Central-South Slavic diasystem once referred to as Serbo-Croatian. Among the biggest differences between Serbian and Croatian is that Serbian is written in Cyrillic script while Croatian is written in Latin script. Croatian has over 5 million speakers currently living in the Republic of Croatia, in areas of Bosnia-Herzegovina and in numerous foreign lands.