set_selection_owner/[2,3,4] set_selection_owner(+Selection, +Owner)
set_selection_owner(+Selection, +Owner, +Time)
set_selection_owner(+Displayable, +Selection, +Owner, +Time)
Set the owner of Selection on Displayable to be
Owner at Time. Selection must be an atom, which
names the selection to be owned. Owner must be a valid window.
Time must be current_time or a timestamp in milliseconds.
Time defaults to current_time.