chartophylax
An ecclesiastical office attested from the 6th century and usually accorded to deacons. Chartophylax was responsible for the archives of the Church of Constantinople or other great provincial Churches, conservating the canonical records from both Oecumenical and local councils. By the 10th century, chartophylax had become head of the sekreton of chartophylakeion and a principal assistant to the Patriarch with increased functions, such as the examination of candidates to the priesthood and the right to represent the Patriarch in his absence even in the synod. Some monasteries also had a chartophylax, a monk with archival duties. In the years of Andronikos I, megas was added to the title which therefore became megas chartophylax.

epi tou kanikleiou
An imperial official who closely collaborated with the emperor, head of the imperial chancery, in charge of controlling all imperial documents before and after they were signed. The holder of the office played an important role in the imperial court, as well as in the administration.

hypatos ton philosophon
(consul of the philosophers) Byzantine official and scholar responsible for the public schools of philosophy. The first one was Michael Psellos (11th C.), whose successors were John Italos and Theodore of Smyrna etc.

sebastos, pansebastos
Dignitary from the Greek translation of the Latin "Augustus", its status became less important later.