And tell me, Guido. If the professor told a student that it was acceptable for him to submit work in a certain manner and you, acting as the teacher's graduate assistant were given the task of checking over the work and gave it an F, what do you suppose the teacher would say to you when the student came to them complaining of their work having been rejected out of hand, after the professor had said that it was ok for them to submit it in the form which you rejected? I'd say you'd lose your job is what I'd say. mary