Retrieved 7 June 2012. ↑ "What is the Super key?". help.ubuntu.com. Retrieved 23 September 2019. ↑ "MIT Scheme Reference — Characters" ↑ "KDE Fundamentals: Common Keyboard Shortcuts" ↑ "Plasma Desktop: Shortcuts" ↑ "Re: [Usability] Keyboard". mail.gnome.org. 20 March 2007. ↑ Help:Bindings — Openbox ↑ List of Ubuntu Unity Keyboard Shortcuts.