[Zope] Shutting down ZEO2 server (win32)

When you have ZEO2 storage server running in a DOS box on Win32, what is the safest way to shut down the storage server? I've just been closing the dos box at the end of the day, after my same-machine ZEO client is closed. The ZEO client has the shutdown button in the ZMI, but I don't know how to signal the ZEO client to close. Do I open a python console and call a method that way? Thanks.