Theologians of the 12th-century developed sophisticated ways of presenting their arguments supporting Christian doctrine. One of the foremost thinkers, Hugh of St Victor (1096-1141) was a famous teacher at the monastery of St Victor in Paris. His 'On the Sacraments of the Christian Faith' unified his thoughts on Christian doctrine, becoming one of the most important books of the 12th century. It was widely copied, being used as a textbook and reference for theological study. This 12th-century copy of it belonged to the Benedictine priory of the Blessed Virgin Mary and St Oswin, in Tynemouth, a cell of St Albans, known for its great learning in that period. Hugh wrote 'On the Sacraments' in thirty parts, divided into two main sections. On this page, the fourth part of Section II ends, indicated by the blue E ("Explicit quarta pars", "Part 4 ends"), with a green I ("Incipit qnta") marking the beginning of Part 5. Parts 4 and 5 concern the church and its furnishings as places where the sacraments are conferred. Part 5's title is "De Dedicatione ecclesiae" ("Dedication of a church", with a blue D). Part 5 proper begins with the large decorated P. All the coloured, decorated letters are aids to the reader, cuing the structure of the text. Also, a reader has added study notes in the margin.