I would just write "ETH Oberon (formerly System 3, S3) is written in Oberon-2." Your sentence is not false though, as Oberon-2 is a superset of Oberon but your wording sounds a little complicate... Jörg > Am 22.07.2020 um 18:09 schrieb peter at easthope.ca: > > "ETH Oberon (formerly System 3, S3) written mostly in > Oberon with some parts in Oberon-2."