text: Dux is also the root of various high feudal noble titles of peerage rank, such as the English duke, the French duc, the Spanish and Portuguese duque,  the Venetian doge, the Italian duca and duce, and the Byzantine Greek dukas or doukas (Gr. δούκας) (see Doukas).
  Italian Fascist dictator Benito Mussolini used the title of dux (and duce in Italian) to represent his leadership. One fascist motto was "DVX MEA LVX", Latin for "[The] Duce [is] my light" or "[The] Leader [is] my light".
  In pre-revolutionary Russia, the Dux Factory built bicycles, automobiles and aircraft in Moscow.
  Education
  In Hong Kong, Scotland,  South Africa, Australia and New Zealand dux is a modern title given to the highest-ranking student in academic, arts or sporting achievement (Dux Litterarum, Dux Artium and Dux Ludorum respectively) in each graduating year. This can lead to scholarships at universities. The runner-up may be given the title proxime accessit (meaning "he/she came next") or semidux.
  In Portuguese universities the Dux is the most senior of students, usually in charge of overseeing the praxe (initiation rituals for the freshmen).
  Popular culture
  In RuneScape 3, "Dux" is offered to players as a choice of title alongside "Duke" and "Duchess".
  In Light Bringer of Pierce Brown's Red Rising Saga, "Dux" is a rank and title given to those who speak with the authority of their liege, as in the character of Holiday ti Nakamura.