Just bought my first dive computer, a secondhand Uwatec teg 2G. It has 20 dives on it according to the log. I was wondering if there was any way to clear those off, so I can start clear when I first dive with it. I don't see anything in the book about it, but have just quickly read it over several times. Sorry if this is a stupid question, and the answer is probably right in front of me. Thanks