The idea of manyex is to prepare exams or test (obviously also quizzes or problem sets). Each exam can be composed by one or more exercises of different types or the same type (multiple choice, true/false or short answers). The power of manyex comes though to prepare multiplechoice questions (or true/false) and permute them so that cheating can be minimized. Even if cheating is not a problem it can create different exams fron a database so that they are randomly changed for one year to the other.