LF Addon where you can make passthrough windows for clicks like Isboxer had

[Volwik]

Used to be able to, while dual boxing, make a small window on your main character's screen to display a portion of your second character's screen that allowed you to click through. You could put your healer on follow with healbot or clique and heal from your main window. This setting was in ISboxer under VFX passthrough and obviously no longer works, but it's technically not key broadcasting which was the reason for the ban. Any help would be appreciated, considering trying to build it myself.