/* [MS-XLSB] 2.6.4.1 */
function parse_BrtCalcChainItem$(data, length) {
	var out = {};
	out.i = data.read_shift(4);
	var cell = {};
	cell.r = data.read_shift(4);
	cell.c = data.read_shift(4);
	out.r = encode_cell(cell);
	var flags = data.read_shift(1);
	if(flags & 0x2) out.l = '1';
	if(flags & 0x8) out.a = '1';
	return out;
}

/* 18.6 Calculation Chain */
function parse_cc_bin(data, opts) {
	var out = [];
	var pass = false;
	recordhopper(data, function hopper_cc(val, R_n, RT) {
		switch(RT) {
			case 0x003F: /* 'BrtCalcChainItem$' */
				out.push(val); break;

			default:
				if((R_n||"").indexOf("Begin") > 0){/* empty */}
				else if((R_n||"").indexOf("End") > 0){/* empty */}
				else if(!pass || opts.WTF) throw new Error("Unexpected record " + RT + " " + R_n);
		}
	});
	return out;
}

function write_cc_bin(data, opts) { }