This documentation is relevant to WMWifiRouter version 1.20 and newer, and has been last updated to reflect the changes in version 1.25.
This option allows you to switch your Bluetooth stack between Off, On, and On and discoverable modes. Bluetooth must be in discoverable mode for unpaired devices to find your mobile device.
Note that this does not work on all devices. Consult your Windows Mobile or your device's user manual for information on how to do this manually outside of WMWifiRouter.