There is Wirth's 4 page guide, How to use the Oberon System https://people.inf.ethz.ch/wirth/ProjectOberon/UsingOberon.pdf https://people.inf.ethz.ch/wirth/Pro

There is Wirth's 4 page guide, How to use the Oberon System https://people.inf.ethz.ch/wirth/ProjectOberon/UsingOberon.pdf https://people.inf.ethz.ch/wirth/ProjectOberon/UsingOberon.p... Also The Oberon Pi Quick Reference and System User Guide at this project page.