original: Previous versions were based on Knoppix.
simplifications: Older versions were based on Knoppix. Older types were built on Knoppix. Versions before this one were based on Knoppix. Old versions were Knoppix based. Earlier versions were based on Knoppix. Past versions were based on Knoppix. Older versions were based on Knoppix. Older versions were based on Knoppix. Earlier versions were based on Knoppix. Early versions are based on Knoppix.