Basically, a checkbox option in the body highlight FX, to set highlight as global. If it is checked, the highlight offset will be independ the level and comes from a "global location" or "global source" (current FX behioaviour)
If is unchecked, the highlight offset will adjust according the scale, rotation and position of the connected level. It would be very usefull if you need to flip or rotate your level and the highlight offset must change with it.
Best!