@Elderberry
That pic reminded me of the Wang word processors. I never used one. Where I worked, we had the DECmates. It's so funny to think back to those days. We thought we'd arrived. No more typewriters! Mistakes were easily corrected. Could it get anymore advanced than this?! 
I still get a chuckle when I think of my friend who came over when I got my first computer. She didn't have any hands-on with the use of a mouse, so watching her try to coordinate the hand and the eye was LOL hilarious.
OS looks like either DOS or VMS.
