RE: C-x 2 and C-x 3

[Drew Adams]

> > copy-window-below, copy-window-above,
> > copy-window-right, copy-window-left
> 
> One copies to an existing object. But clones (to) a new object. So
> something like: clone-window-dock-right, clone-window-dock-below
> 
> It implies that the current window is cloned first and the 
> newer window gets docked to the right of or below the "older" window.

No.  "Copy" means copy: duplicate.  Whether a copy overwrites an existing object
or not does not affect whether the operation is copying.

Yes, the destination of copying is sometimes hidden, as in copying text to a
(hidden) clipboard.  But copying always means duplication in some form.