Adding Concurrency to the Oberon System

The Oberon system, developed by Niklaus Wirth and Jürg Gutknecht is unusual in that, although it has a "single process multitasking" window user interface, it does not support concurrent execution of programs. This approach yields a simple design and works surprisingly well, but it does have limitations of practical importance. In this report we describe a project, Concurrent Oberon, which introduces concurrency into the Oberon system while maintaining the simplicity and spirit of the original system