[||] = ArrayCopy ?(A), ?(B), '?(A_or_B)',   ARRAY_UNION
[|!] = ArrayCopy ?(A), ?(B), '?(A_plus_B)', ARRAY_INSERT
[!&] = ArrayCopy ?(A), ?(B), '?(A_not_B)',  ARRAY_SUBTRACT
[&&] = ArrayCopy ?(A), ?(B), '?(A_and_B)',  ARRAY_INTERSECT
