I haven&#x27;t downloaded it yet, so I don&#x27;t know. Have you tried<p>- the normal Help in the Apple menu bar?<p>- typing: System.OpenFile Help.Text
  and &quot;middle-clicking&quot; on System.OpenFile?<p>- typing: System.Help
  and &quot;middle-clicking&quot; on System.Help?<p>I don&#x27;t know how familiar you are with the Oberon system. The machines had a three-button mouse and you executed commands by middle-clicking. On the Mac that&#x27;s usually emulated by ctrl+left-click or option+left-click or command+left-click.<p>A command is: ModuleName.ProcedureName
written anywhere, for example, the menu bars are really just normal text boxes that can be edited like any other text box.