I use JOE and JOE also supports multiple views into the same file. In fact, to open another file is two commands: the open view/window (^KO) command followed by edit file command (^KE). I've always used this facility for as long as I can remember and it never really occurred to me until now that people using more modern editors and especially GUI editors may not enjoy this same convenience--either not possible or no simple chain of command inputs to get there. And it's not like I don't use GUI editors, just not in situations where I would realize this feature was missing.