code: func Init() error {
  	if err := tb.Init(); err != nil {
  		return err
  	}
  	tb.SetInputMode(tb.InputEsc | tb.InputMouse)
  	tb.SetOutputMode(tb.Output256)
  	return nil
  }
docs: // Init initializes termbox-go and is required to render anything.
  // After initialization, the library must be finalized with `Close`.