When you run the program automatically makes a backup
The program changes the settings of the game on the fly (there is no need to press the button "save")
Disable\Enable Vertical synchronization\Framerate Lock
Disable\Enable Mouse Acceleration
Disable\Enable Mouse Somoothing
Disable\Enable Gamepad Support
Skip\Show Intro Video
Use custom screen resolution
Use custom mouse sensitivity
Change Field of view world
Change Field of view 1st person
Change Game language (for no steam version)
Start game button, if the game has finished work with an error, the program will report an error code.