Wheres erase feature CDRW

[Contender]

Hi, I have recently a newer cdrw drive software is Nero 5 never had this before. Going through all the options don't see any erase feature for cdrw Is there any? Have emailed Nero company but no answer. It also says Nero can overburn looked in instructions can't find this does anybody know what they mean. Thankyou just switching from an old Easy cd creator Batman