If this setting is enabled, XShutdown will attempt to automatically switch off your
computer after shutdown has completed, instead of displaying the usual message
that you may now switch off your computer.
This will only work if your computer supports this. For this, both your BIOS and
your OS/2 must support at least
Advanced Power Management (APM) V1.2. As far as I know, with OS/2 this is only the case
for Warp 4 Fixpak 6 and higher.