Ah . . . at last I found the term I was looking for that describes "that picture": https://ksr-ugc.imgix.net/assets/000/343/164/117dbdeb72106130b0c233e454653d14_original.png?v=1358445536&w=680&fit=max&auto=format&lossless=true&s=b51b389fb4ab85d0e86d29ecafb66656 a Single Document Interface. Richmond.