Library (Greek βιβλίον, book + θήκη, repository, receptacle, box [1]) – an institution that collects and stores works of print and writing for public use, as well as carries out reference and bibliographic work. Currently, an increasing number of books are digitized and stored on electronic media. For storage and reading, the formats FB2, EPUB, MOBI, PDF, DjVu, RTF, TXT and others are used.