ALTO (Analyzed Layout and Text Object) is a XML Schema that details technical metadata for describing the layout and content of physical text resources, such as pages of a book or a newspaper. It most commonly serves as an extension schema used within the Metadata Encoding and Transmission Schema (METS) administrative metadata section. However, ALTO instances can also exist as a standalone document used independently of METS.
В. Прохода. ИНТЕЛЛЕКТУАЛЬНАЯ КУЛЬТУРА БЕЛАРУСИ: когнитивный и прогностический потенциал социально-философского знания. Четвертой международной научной конференции 14–15 ноября 2019 года, г. Минск, page 228-232. Minsk, (2019)http://philosophy.by/wp-content/store/intcult_t1.pdf#page=228. (EVS).