The management of a bibliographical show introduces numerous and different problems. On the same level there are the demands of a serious scientific work and of didactic. Show s well organized can be the best way for use and exploit the ancient collections of the scholastic libraries. In this cases managers of the show may interact with the didactic from construction of the same show. The shows " Apertis verbis ", " Oriens extremus ", and " deus ex machina " organized by Liceo Classico Ludovico Antonio Muratori are examples of high level. In every moment they have involved students and teachers
