Each monitor is a row of workspace cards at its own aspect ratio, with
live captures of the windows where they sit, including windows on
hidden workspaces. Alt+Tab opens it with the previous window picked,
further Tabs walk the focus history, and releasing Alt switches.
Super+W opens it without the hold. Hover, click, Enter and the
workspace digits work too.
Group cycling moves from Alt+Tab to Super+Tab and Super+Shift+Tab.
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