swaplist(3tk) on Linux
The text cdf29742fb7e, as Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A dialog which allows a user to move options between two lists
Flags it lists
-
-dbuttontext -
-embed -
-geometry -
-lbuttontext -
-llabel -
-rbuttontext -
-reorder -
-rlabel -
-title -
-ubuttontext