If the Instrument Status window has vanished, first check to see if it has simply been closed. From an active window type ``ps -aux 
grep
hk '' and look for the ``hkserv'' process.
If the process is present, the window has been closed, and it will be necessary
to locate and open it. If the icon is not visible, it may be hiding behind one
of the open windows. In OpenWindows, one can check the ``windows'' item in
the menu for the status of all operating windows; if the Instrument Status
window is present, open it and continue observing.
If the Instrument Status window has died, perform the