Multiscreens - which one is active?

[Sysadmin.]

I'm curious about how I could be able to tell which multi-screen is active
on the console.  This is just one example of how I could use this information:
I log onto a system and I want to be able to page the person on the console.
So, instead of going through a trial and error process, I want it to beep the
active multi-screen.

I stress that I do not want someone to solve the paging problem.  I want to
know how to determine which multi-screen is the active one.  I can use this
in other ways as well.  Thanx in advance.

-- 
        Jesse W. Asher
        Dynasys               (901) 382-1705  
        6196-1 Macon Rd., Suite 200, Memphis, TN  38134  
        uunet!dynasys!jessea