Secretariate of Briefs to Princes and of Latin Letters Wikipedia
The Secretariate of Briefs to Princes and of Latin Letters, or simply the "Secretariate of Briefs", was one of the offices of the Roman Curia abrogated in the 20th century. It had 2 small sections.
The Secretariate of Briefs to Princes consisted of the Secretary and 2 office assistants. The Secretary was a prelate responsible for writing the Papal briefs addressed to emperors, kings, princes, and other dignitaries. He also prepared the allocutions that the Pope orated at consistories and the encyclicals and Apostolic letters addressed to bishops and the faithful. He acted according to the instructions of the Pope. He was required to be a proficient Latinist because these documents were written in Latin.
The Secretary for Latin Letters was also a prelate or private Papal chamberlain ("cameriere segreto" in Italian) and was responsible for writing letters in Latin of less solemnity on behalf of the Pope. He had an office assistant.