Hi everyone :-) As some asked me how this or this works, and I remember how difficult my beginning were on modifying xplane sceneries a time ago, I thought I'd make a very simple video, taking as example a badly-placed scenery. It's not an A-Z tutorial, but just covers one method... sounds simple, but it took me time to find out how to do that, last year ^^ The rest is english spoken inside the vid... If you have sugestions on what a video would be usefull too, don't hesitate, always open to new ideas and constructive critics