I love free stuff and have downloaded a few files for my X-Plane program. Some come with an entry to be put into MACOSX and some don't. What's this file for? I'm guessing it may have something to do with running Xplane on an Apple system (MAC - OS ?) or not? I'm using Windows but faithful extract and upload the Macosx files if they come with the download, do I need to or is this as I suspect for the MAC users out there?