I just bought these candy bars called Carbolite and they're great! There's hardly any sugar or carb grams in them but it did say this on the package for the carb section:

"Malitol, a low digestable carbohydrate, has been eliminated from the Total Carbohydrate count as it converts to a neglible amount of glucose in the body. The Malitol accounts for approximately 85% of the caloric value of the serving."

Is this considered a hidden carb? I hope not because I can't stand the Atkin's bars.