code: private int skipArc(int offset) {
  		if (isNextSet(offset)) {
  			if (isLabelCompressed(offset)) {
  				offset++;
  			} else {
  				offset += 1 + 1;
  			}
  		} else {
  			offset += 1 + gtl;
  		}
  		return offset;
  	}
docs: Read the arc's layout and skip as many bytes, as needed, to skip it.