By 'affectionately named', I rather think someone thought it sounded cool to name it such. Perhaps CloudCore proper allows 'upgrading' a running system to the '

By 'affectionately named', I rather think someone thought it sounded cool to name it such. Perhaps CloudCore proper allows 'upgrading' a running system to the 'Win3' composition in case one would want to run GUI diagnostics, but other than that the run level terminology doesn't mean much as it's rather a distinction made at image staging time.