Example:
AI (CPU) Overclocking: Auto (the default option)
available options: Auto, manual, standard, Overlock 3%, 5%, 10%, etc.
Of course the manual is as much help as the BIOS's explanation of the option. As I've never seen overclocking occur by accident through a setting like this, I assume Auto in this case means "no overclocking", but why can't it just say that, or "disabled" or something.