I was a Data General (and look alike) geek using IRIS O/S. One of the first true multi user systems. File and screen handling was a little obtuse but you could develop a lot of programs in a hurry.
Your kidding me!! I thought I was the only one around that knew anything about IRIS. I used to be a Point 4 reseller and sold a lot of Mark 5's Mark III's and Mark II's.
Man, those where the days!!