This evolution was formalized in the reforms of Diocletian (r. 284–305) and Constantine the Great (r. 306–337), when the term "praeses" came to designate a specific class of provincial governors, the lowest after the "consulares" and the "correctores". In the East, however, they ranked between the two other classes, possibly because the few "correctores" there were instituted after the "praesides". The term "praeses" remained in general use for provincial governors, and was still used in legal parlance to designate all classes of provincial governors collectively. In common usage, the "praesides" were often also designated by more generic titles such as "iudex" ("judge"), "rector" or "moderator", and sometimes archaically as "praetor". In Greek, the term was rendered as ("hegemon").