[Pharo-users] where can I find the prefences so I make the meta-click workable

Hello, According to the Pharo by exampkle tutorial I have to do system > preferences to see the menu where I can change the keyboard to make a meta-click work, But there is no preferences choice. I have looked at system > settings > system but also there no keyboard. Does anyone know where the menu is hidden or what the meta-click is on Windows 7. I tried already alt-ctrl, shift-alt, shift-ctrl but no luck. Roelof