* @param specInfo
	 * @return BitSet; or null if mess up with type
	 */
	BitSet getAtomBits(String setType, int[] specInfo) {
		if (setType.equals("SpecSeqcodeRange"))
			return getSpecSeqcodeRange(specInfo[0], specInfo[1]);
		if (setType.equals("Cell"))
			return getCellSet(specInfo[0], specInfo[1], specInfo[2]);
		return null;
	}