if (i != 0) buf.append("->"); buf.append(blockIdList[i]);
int block = blockIdList[i]; if (block < SYMBOLS.length()) buf.append(SYMBOLS.charAt(block)); else buf.append("'" + block + "'");
	public String toString() {		StringBuffer buf = new StringBuffer();		for (int i = 0; i < length; ++i) {			if (i != 0)				buf.append("->");			buf.append(blockIdList[i]);		}		return buf.toString();	}