// Filters Menu
private void ToggleFilter(int index, TextMenu.Item ti)
{
RPMVesselComputer comp = RPMVesselComputer.Instance(vessel);
vesselFilter[vesselFilter.ElementAt(index).Key] = !vesselFilter[vesselFilter.ElementAt(index).Key];
comp.SetPersistentVariable(persistentVarName, VesselFilterToBitmask(vesselFilter));
ti.isSelected = !ti.isSelected;
ti.labelText = vesselFilter.ElementAt(index).Key.ToString().PadRight(9) + (ti.isSelected ? "- On" : "- Off");
}
