Most likely the Jane's Combat Simulations title Advanced Tactical Fighters or its expansions ( Gold , NATO Fighters ).
Parameter files that tell the game engine how to map the textures and what properties (like reflectivity) to apply. Wiler.ATFPack3_Skins.2.rar
This is the second iteration or a specific part of the "ATFPack3" series developed by the community member "Wiler." Typical Contents Most likely the Jane's Combat Simulations title Advanced
Move the extracted files into the game's main installation directory, typically under a folder named SKINS or directly into the root where the .lib files reside, depending on the specific mod manager used (like Toolkit ). Troubleshooting Wiler.ATFPack3_Skins.2.rar
Custom textures (skins) for various aircraft models within the game's engine.