No magic, just facts, Luke; don't search too long; look at the introductory sections of "Project Oberon, The Design of an Operating System and Compiler" (ACM 1992), "The Oberon Companion, A Guide to Using and Programming Oberon System 3" (vdf 1998), and Gutknecht, J (1994): Oberon System 3: Vision of a Future Software Technology, Springer, Software.