A diplomatic edition is to be distinguished both from a facsimile edition, which, in the modern era, normally employs photographic or digital images; and from a type facsimile (such as Abraham Farley's edition of Domesday Book), which seeks to reproduce the appearance of the original through the use of a special typeface.
He was appointed Vice-Prefect of the Vatican Secret Archives by Pope John Paul II on 30 January 1995, and a few days later he was appointed Vice-Director of the Vatican School of Paleography, Diplomatics and Archives Administration.