Could Umberto or somebody explain the details of the intelliscene.cfg file to me. I have been putting this file in for some add-on aircraft, free-hand adjusting the parameters to make stairs etc. match up with doors. It works quite well, but I still wonder about the [geom] parameters. As far as I can ascertain, the first three refer to vertical, longitudinal, and lateral distances (in feet, I think) from the datum reference point (like the [exits] section of aircraft.cfg). But in some cases (this varies between aircraft that I have found files for) there is also a fourth parameter. What does that refer to?