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The command "Super + ${number}" typically refers to a keyboard shortcut combination used on Linux-based operating systems like Ubuntu or GNOME.

The "Super" key usually refers to the "Windows" or "Command" key on the keyboard, which is denoted by a logo of a flag or window. When you press and hold the "Super" key, it activates a shortcut functionality, allowing you to combine it with other keys or numbers.

The "${number}" part represents a numerical value you can select by pressing the corresponding number key on your keyboard while holding down the "Super" key. For example, "Super + 1" will activate a specific function associated with the number 1.

In general, these shortcuts are predefined by the operating system or desktop environment you are using. The specific function that is triggered by "Super + ${number}" may vary depending on your system configuration, but it commonly involves launching or switching between applications or workspaces.