Node:who-am-i, Next:set-user-area, Previous:disconnect, Up:Protocol Requests
        who-am-i [56] ( )
                -> ( Session-No );
This call simply returns the session number of the session issuing the call.
Example:
        1 56
        =1 7
In this example the session number of the session issuing the call is seven.
This call always succeeds.