Well, tell me where the difference is written comparing both Oberon and Oberon-07 report
"Differences between Revised Oberon and Oberon" Niklaus Wirth 22.03.2008 / 15.7.2011
http://www.inf.ethz.ch/personal/wirth/Articles/Oberon/Oberon07.pdfNot mentioned there is the fact there there is now no access to variables that are neither global nor strictly local.
Also, section 4. Assignment of arrays and records is not consistent with the later, current (22.9.2011) Revison of "The Programming Language Oberon":
http://www.inf.ethz.ch/personal/wirth/Articles/Oberon/Oberon07.Report.pdf