The later works are only more or less modified copies of the Notitia of Leo VI, and therefore do not present the true situation, which was profoundly changed by the Islamic invasions of the region. After the capture of Constantinople by the Turks in 1453, another Notitia was written, portraying the real situation (Gelzer, Ungedruckte Texte der Notitiae episcopatuum 613-37), and on it are based nearly all those that have been written since. The term Syntagmation is now used by the Greeks for these documents.