Very fine, cthorpe, no need to give you the benefit of the doubt a second time in a row when you SYSTEMATICALLY twist my words in order to "answer" to something else I never said, or even better, to make me not having said things that are obviously there. (Just a hint, though, do it "by accident", here and here, then it will perhaps go unnoticed and pass your manipulative message, but if you do it with every sentence, well, it's ineffective when it becomes too apparent.) Thank you.
Shades, I don't understand your argument, neither on the user experience level nor on the technical level. Why not have a third pane, and functionality "go/copy/move to pane 1/2/3" instead of "go/copy/move to the other pane" when never ever I'm asking for "copy/move to both other panes" - where's the prob I don't seem to see here? And again, I don't see the necessary functions to write a script in the DO command reference for selecting e.g. pane 4 as the target pane.
Just drop it. The real prob with DO is elsewhere: It's considered superior, and whenever you ask for a function that isn't there, you get the answer, "it's possible", without anybody telling you which way it could be possible. It's very similar to the alleged "superiority" of Apple: it's just "better", and that's about it. We're speaking of adoration of divinity here, while facts belong into quite another category. It's a revolting business scheme but which pays, man's nature being the way it is.
And finally, as said before and in any such file commander, scripts could copy/move, in the end, to tabbed (= invisible) folders, but wouldn't bring you the visual display of that third pane by this, or then by hiding one of the two folders currently on display.
And yes, copying / moving around files is core functionality of a file manager, not "you do it alone", and as such it should be assisted by your paid file manager, whilst in fact, functionality here is very poor everywhere (just compare the "go" functionality of these file commanders with their respective "copy/move" functionality, e.g. in XY). Another functionality is bulk renaming, here you'll have much more functionality, too, in most file commanders, than with "copy/move", and then I'd suppose most people do lots more of copying / moving files, than they do mass renaming. So I'm in my right to consider this state of affairs weird.