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You can customize the overlay an various ways. Custom overlays are found in the "overlaysOverlays" folder inside your rFactor 2 installation. Before creating your first custom overlay, you need to create that folder yourself. The first step of customizing your overlay is unpacking the default.zip inside the overlays folder and renaming it from default to something like your league name or series name. Inside this folder you will find some files and folders:
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