private static LinkedDimGroup getGroupContaining(ArrayList<LinkedDimGroup>[] groupLists, CompWrap cw)
	{
		for (ArrayList<LinkedDimGroup> groups : groupLists) {
			for (int j = 0, jSz = groups.size(); j < jSz; j++) {
				ArrayList<CompWrap> cwList = groups.get(j)._compWraps;
				for (int k = 0, kSz = cwList.size(); k < kSz; k++) {
					if (cwList.get(k) == cw)
						return groups.get(j);
				}
			}
		}
		return null;
	}