Super key (keyboard button)

Both keys became supported in the powerful Emacs text editor, which had, or would receive, influential ports on Multics, Unix, and many other operating systems, and saw wide adoption at institutions beyond MIT.

Beginning in 1984, the X Window System (a graphical user interface standard for Unix-like operating systems) supported the Meta, Super, and Hyper modifiers, as well as the common Shift, Control, and Alt keys.

The subsequent proliferation of the Windows key as a part of the standard 104/105-key layout, coupled with its lack of specific purpose for operating systems with no Start menu, offered a new option to map another input modifier key expected in the Unix world.

[10] In elementary OS, the Super key shows a shortcut overlay and is used for several system, window, and workspace functions.

[12] X11 emulation on macOS puts the Super shift state on the Command or "Apple" key.