If you wish to skip a question and go back to it later, you can mark it. Same if you answer the question but you may want to reconsider that answer, mark it and go back later. What I'm not sure on is whether, when you submit marked answers, they are graded or default to being wrong. So it may be better to unmark everything before hitting the submit button. Someone?
I used "mark" for questions that I wasn't quite sure about -- so I came back to them at the end of exam -- just to make sure the answer I chose is what I really wanted to stay with (sometimes reading other questions gives you a spark of inspiration to a previous questions). nine times out of ten I ended up keeping the original answer I chose.
When I submitted again the system reminded me that I have ten more marked answer that will be judged automaticly by the system as incorrect!
The guy does say "marked answer" not "marked questions" so there could be some confusion here. If he hasn't answered the questions I understand this, but if he has answered them but marked them for reconsideration, then that's definitely a problem. [ March 26, 2003: Message edited by: Barry Gaunt ]