protected void toggleClimateMask(Places A, int mask)
	{
		int current=A.getClimateTypeCode();
		if(current<0)
			current=0;
		if((current&mask)==0)
			A.setClimateType(current|mask);
		else
			A.setClimateType(current&((int)(PhyStats.ALLMASK-mask)));
	}