I can relate as I'm one of the few people I personally know who has used that feature in the last twenty years. In the last ten years or so however, I used som

I can relate as I'm one of the few people I personally know who has used that feature in the last twenty years. In the last ten years or so however, I used some variation of NX in any case, whenever I needed a remote X application, as then I typically need to preserve the session as well. I think the last time I used plain X11 protocol across the network was when I still had Sun Rays (between the Sun Ray server and the application's host).