The customary, edited here from British Library harley 1005, was composed at Bury St Edmunds in the first half of the 13th century (probably after 1234); its main concern is with the duties of the abbot and the obedientiaries, butit also throws much light on the daily duties of a 13th-century Bury monk. The edition is provided with an extensive historical introduction, and a number of treatises relevant to the customary and printed in appendices.