 So you don't know what front facing all means, not a problem. This literally just means anything that is facing the camera. So if you have a two-sided object and the camera can see one side of it, it's going to apply the actions to only the faces the camera can see. This is really good if you ever want to just mask something that is facing you but you don't want to mask the faces on the other side and you want to do it in a single click. I hope that helps and as always I hope you have a fantastic day and I'll see you around.