The term DOS FOLLOWER can be summarized as a person who follows the orders of a DOS, or Director of Studies. A DOS is responsible for the academic progress of students in a school or college, and a DOS Follower is someone who assists the DOS in carrying out their duties. They may help with administrative tasks, such as organizing student records, or providing support to teachers and students. The term TRES, which is four letters, is a Spanish word meaning 'THREE'.