This publication is focused on a problem which has so far been given little attention – the use of above-the-line signs and markings in Mathey Preobrazhenski’s books. The text is an attempt to elucidate the application of various above-the-line signs. Special attention is paid to cases in which the signs and markings used differ from the common norms of writing in Old Bulgarian books. The language material is excerpted from Mathey Preobrazhenski’s Handwritten Literary Collection from 1853 and from his typeset books.