Hi Chris > This again suggest the failure to distinguish between Oberon & S3/V4. > We have a formal definition of Oberon. > What's the formal definition of S3/V4? This book describes V4: (HCI/GUI, garbage collection, version checking while loading modules...) http://www.amazon.com/The-Oberon-System-Programmers-Manual/dp/0201544229 Jörg