With two codices that are of particular importance from our Hungarian perspective, we have widened the scope of Usuarium to Pontificals. Certainly, many Pontificals were already involved in the comprehensive surveys of e.g. abbatial blessings or royal coronations, but no book was processed in full. Now, the Pontifical of Chartvirgus, the most prominent source that proves the continuity of the Use of Esztergom from the 11th to the 16th century, has been processed with its full text along with its direct descendant, an early 13-century Pontifical of Zagreb that has been processed with full rubrics but abbreviated items. This experiment of a Pontifical Project proves that the system of Usuarium is not restricted to the handling of Missals, but can successfully manage any liturgical material within the Latin tradition.