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AdvancedClose 22.214.171.124-signed.1-signed Requires Restart
Close FF with all own windows, restart FF, close all FF windows except current, close all FF instances
About this Add-on
Left click allows you close current window, right click opens menu and allows close current window, close all windows except current window, restart browser, close all windows and exit browser.
If you closed last window - browser closed too.