var write_content_xml/*:{(wb:any, opts:any):string}*/ = (function() {
	var null_cell_xml = '          <table:table-cell />\n';
	var covered_cell_xml = '          <table:covered-table-cell/>\n';
	var cell_begin = '          <table:table-cell ', cell_end = '</table:table-cell>\n';
	var vt = 'office:value-type=';
	var p_begin = '<text:p>', p_end = '</text:p>';
	var write_ws = function(ws, wb, i/*:number*/, opts)/*:string*/ {
		/* Section 9 Tables */
		var o = [];
		o.push('      <table:table table:name="' + escapexml(wb.SheetNames[i]) + '">\n');
		var R=0,C=0, range = decode_range(ws['!ref']);
		var marr = ws['!merges'] || [], mi = 0;
		var dense = Array.isArray(ws);
		for(R = 0; R < range.s.r; ++R) o.push('        <table:table-row></table:table-row>\n');
		for(; R <= range.e.r; ++R) {
			o.push('        <table:table-row>\n');
			for(C=0; C < range.s.c; ++C) o.push(null_cell_xml);
			for(; C <= range.e.c; ++C) {
				var skip = false, mxml = "";
				for(mi = 0; mi != marr.length; ++mi) {
					if(marr[mi].s.c > C) continue;
					if(marr[mi].s.r > R) continue;
					if(marr[mi].e.c < C) continue;
					if(marr[mi].e.r < R) continue;
					if(marr[mi].s.c != C || marr[mi].s.r != R) skip = true;
					mxml = 'table:number-columns-spanned="' + (marr[mi].e.c - marr[mi].s.c + 1) + '" table:number-rows-spanned="' + (marr[mi].e.r - marr[mi].s.r + 1) + '" ';
					break;
				}
				if(skip) { o.push(covered_cell_xml); continue; }
				var ref = encode_cell({r:R, c:C}), cell = dense ? (ws[R]||[])[C]: ws[ref];
				var fmla = "";
				if(cell && cell.f) {
					fmla = ' table:formula="' + escapexml(csf_to_ods_formula(cell.f)) + '"';
					if(cell.F) {
						if(cell.F.substr(0, ref.length) == ref) {
							var _Fref = decode_range(cell.F);
							fmla += ' table:number-matrix-columns-spanned="' + (_Fref.e.c - _Fref.s.c + 1)+ '"';
							fmla += ' table:number-matrix-rows-spanned="' + (_Fref.e.r - _Fref.s.r + 1) + '"';
						} else fmla = "";
					}
				}
				if(cell) switch(cell.t) {
					case 'b': o.push(cell_begin + mxml + vt + '"boolean" office:boolean-value="' + (cell.v ? 'true' : 'false') + '"' + fmla + '>' + p_begin + (cell.v ? 'TRUE' : 'FALSE') + p_end + cell_end); break;
					case 'n': o.push(cell_begin + mxml + vt + '"float" office:value="' + cell.v + '"' + fmla + '>' + p_begin + (cell.w||cell.v) + p_end + cell_end); break;
					case 's': case 'str': o.push(cell_begin + mxml + vt + '"string"' + fmla + '>' + p_begin + escapexml(cell.v) + p_end + cell_end); break;
					case 'd': o.push(cell_begin + mxml + vt + '"date" office:date-value="' + (parseDate(cell.v).toISOString()) + '"' + fmla + '>' + p_begin + (cell.w||(parseDate(cell.v).toISOString())) + p_end + cell_end); break;
					//case 'e':
					default: o.push(null_cell_xml);
				} else o.push(null_cell_xml);
			}
			o.push('        </table:table-row>\n');
		}
		o.push('      </table:table>\n');
		return o.join("");
	};

	return function wcx(wb, opts) {
		var o = [XML_HEADER];
		/* 3.1.3.2 */
		if(opts.bookType == "fods") o.push('<office:document xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:presentation="urn:oasis:names:tc:opendocument:xmlns:presentation:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:rpt="http://openoffice.org/2005/report" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:css3t="http://www.w3.org/TR/css3-text/" office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.spreadsheet">');
		else o.push('<office:document-content office:version="1.2" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2">\n'); // TODO
		o.push('  <office:body>\n');
		o.push('    <office:spreadsheet>\n');
		for(var i = 0; i != wb.SheetNames.length; ++i) o.push(write_ws(wb.Sheets[wb.SheetNames[i]], wb, i, opts));
		o.push('    </office:spreadsheet>\n');
		o.push('  </office:body>\n');
		if(opts.bookType == "fods") o.push('</office:document>');
		else o.push('</office:document-content>');
		return o.join("");
	};
})();