Historically, a clerk or official in the English Chancery who made out writs; an obsolete legal term.
From Latin 'cursor,' meaning 'runner,' the person who runs errands or executes orders. In medieval English law, cursitors were subordinate officers who prepared standard documents, and the title survived until the 19th century.
Medieval 'cursitors' literally had a job of running around with official documents—their name reflects that they were the runners/couriers of the legal system before the bureaucracy got too big and systematized.
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