static void toggle_quadoption (int opt)
{
  int n = opt/4;
  int b = (opt % 4) * 2;

  QuadOptions[n] ^= (1 << b);
}
static void toggle_quadoption (int opt)
{
  int n = opt/4;
  int b = (opt % 4) * 2;

  QuadOptions[n] ^= (1 << b);
}