Comment 10 for bug 950427

You can review the key command specs here https://docs.google.com/document/d/1jUtWkfqlwDydaO-B67F9PsOhE66AZ2y5N_uDRW9pOuQ/edit

The reason for not using Super alone escapes me, maybe it was because it would launch Slingshot when you're trying to use a Super+<SomethingElse> key combo.