I thought so. My intention was more to subtly correct parent rather than to ask a genuine question. ...although I've learnt a bit more from your reply. Thanks!

I thought so. My intention was more to subtly correct parent rather than to ask a genuine question. ...although I've learnt a bit more from your reply. Thanks! MacOS seems to still have something called Console which functions somewhat similarly to what you describe (the panel of lights and toggle-switches, rather than a two-way communication device).