Long ago, as a summer intern, I had some brief exposure to FOCUS. As best I can recall, I found the environment pretty cool. But I was constantly stymied by hav

Long ago, as a summer intern, I had some brief exposure to FOCUS. As best I can recall, I found the environment pretty cool. But I was constantly stymied by having to use an IBM 3270 terminal, which insists that Return and Enter are different things, and Enter is in the wrong place.