public static final void setUnitValue(String[] unitStrings, UnitValue x, UnitValue y)
	{
		for (String unitString : unitStrings) {
			String s = unitString.toLowerCase().trim();
			if (x != null)
				HOR_DEFS.put(s, x);
			if (y != null)
				VER_DEFS.put(s, y);
		}
		MOD_COUNT++;
	}