We are working on a large project in our office, and this came up. I am working on one building, and that building is linked to another file that someone else is workling on for adifferent reason. in his file, with the linked Revit, he is getting this wide green line showing up through the middle of these walls. its not all walls, just some. we have gone into the visibility graphics in his linked file and set to it to "Custom" and messed with it that way, but no luck. I cant find this line in the original file though. I was thinking it was a room separation line, but that doesnt turn it off. anyone have any ideas?