For Nero burning CD copy, what is the difference between disc-at-once and disc-at-once/96? which one is best for cd copy and burning?

found this in Help.
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With 'Disc-at-once', the whole medium is written in one go without deactivating the laser. In the 'Disc-at-once/96' (DAO/96) process, more data is written, which can produce better results for actions such as copying CDs.