TSHELP.FLL -- Terminal Server Calls for VFP Description:

Enables you to access some of the Terminal Server API calls in vfp easily.
You can tell if the client has disconnected and other 'status' of the client session.
Get the session ID, what protocol the client is using, the TS domain, client name, station ID, client IP address.
Enables you to disconnect from the session (so your application can quickly "log the user off" or when used with a timer, if the client session is broken, you can log off for security purposes.