This is a detector that detects whether you're using Turbowarp or Scratch. This project uses the "is TurboWarp?" custom augmented block from TurboWarp. Essentially, all undefined custom blocks will output 0 but on platforms such as TurboWarp, it specifically searches for that custom augmented block and makes it output 1.
Thanks to @GarboMuffin (creator of Turbowarp) for the inspiration. All code by me. Custom augmented imported by me.