diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1be9d7a..20e2cec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ but not limited to API changes and file location changes.  Minor behavioral
 changes may not be included if they are not expected to break existing code.
 
 
+## Unreleased  (2017-??-??)
+
+* XLML/HTML resolution logic looks further into the data stream to decide type
+* Errors thrown on suspected RTF files
+
 ## 0.10.5 (2017-06-09)
 
 * HTML Table output header/footer should not include `<table>` tag
diff --git a/README.md b/README.md
index 1a9417d..773f121 100644
--- a/README.md
+++ b/README.md
@@ -1381,6 +1381,7 @@ The exported `read` and `readFile` functions accept an options argument:
 | Option Name | Default | Description                                          |
 | :---------- | ------: | :--------------------------------------------------- |
 | type        |         | Input data encoding (see Input Type below)           |
+| raw         |         | If true, plaintext parsing will not parse values **  |
 | cellFormula | true    | Save formulae to the .f field                        |
 | cellHTML    | true    | Parse rich text and save HTML to the `.h` field      |
 | cellNF      | false   | Save number format string to the `.z` field          |
@@ -1400,6 +1401,8 @@ The exported `read` and `readFile` functions accept an options argument:
 
 - Even if `cellNF` is false, formatted text will be generated and saved to `.w`
 - In some cases, sheets may be parsed even if `bookSheets` is false.
+- Excel aggressively tries to interpret values from CSV and other plaintext.
+  This leads to surprising behavior! The `raw` option suppresses value parsing.
 - `bookSheets` and `bookProps` combine to give both sets of information
 - `Deps` will be an empty object if `bookDeps` is falsy
 - `bookFiles` behavior depends on file type:
@@ -1446,8 +1449,13 @@ file but Excel will know how to handle it.  This library applies similar logic:
 | `0x50` | ZIP Archive   | XLSB or XLSX/M or ODS or UOS2 or plaintext          |
 | `0x49` | Plain Text    | SYLK or plaintext                                   |
 | `0x54` | Plain Text    | DIF or plaintext                                    |
-| `0xFE` | UTF16 Encoded | SpreadsheetML or Flat ODS or UOS1 or plaintext      |
+| `0xEF` | UTF8 Encoded  | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0xFF` | UTF16 Encoded | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 | `0x00` | Record Stream | Lotus WK\* or Quattro Pro or plaintext              |
+| `0x0A` | Plaintext     | RTF or plaintext                                    |
+| `0x0A` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x0D` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x20` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 
 DBF files are detected based on the first byte as well as the third and fourth
 bytes (corresponding to month and day of the file date)
@@ -1456,13 +1464,17 @@ Plaintext format guessing follows the priority order:
 
 | Format | Test                                                                |
 |:-------|:--------------------------------------------------------------------|
-| HTML   | starts with `<html`                                                 |
+| XML    | `<?xml` appears in the first 1024 characters                        |
+| HTML   | starts with `<` and HTML tags appear in the first 1024 characters * |
 | XML    | starts with `<`                                                     |
+| RTF    | starts with `{\rt`                                                  |
 | DSV    | starts with `/sep=.$/`, separator is the specified character        |
 | TSV    | one of the first 1024 characters is a tab char `"\t"`               |
 | CSV    | one of the first 1024 characters is a comma char `","`              |
 | PRN    | (default)                                                           |
 
+- HTML tags include: `html`, `table`, `head`, `meta`, `script`, `style`, `div`
+
 </details>
 
 <details>
diff --git a/bits/05_buf.js b/bits/05_buf.js
index f6334a9..f08e398 100644
--- a/bits/05_buf.js
+++ b/bits/05_buf.js
@@ -2,6 +2,7 @@ var has_buf = (typeof Buffer !== 'undefined' && typeof process !== 'undefined' &
 
 function new_raw_buf(len/*:number*/) {
 	/* jshint -W056 */
+	// $FlowIgnore
 	return new (has_buf ? Buffer : Array)(len);
 	/* jshint +W056 */
 }
diff --git a/bits/34_extprops.js b/bits/34_extprops.js
index 6f8be96..1462983 100644
--- a/bits/34_extprops.js
+++ b/bits/34_extprops.js
@@ -57,6 +57,7 @@ function parse_ext_props(data, p) {
 					break;
 
 				case "Named Ranges":
+				case "名前付き一覧":
 				case "Benannte Bereiche":
 				case "Navngivne områder":
 					p.NamedRanges = len;
diff --git a/bits/35_custprops.js b/bits/35_custprops.js
index 8efcd1f..214ad4b 100644
--- a/bits/35_custprops.js
+++ b/bits/35_custprops.js
@@ -37,6 +37,7 @@ function parse_cust_props(data/*:string*/, opts) {
 						p[name] = unescapexml(text);
 						break;
 					default:
+						if(type.slice(-1) == '/') break;
 						if(opts.WTF && typeof console !== 'undefined') console.warn('Unexpected', x, type, toks);
 				}
 			} else if(x.substr(0,2) === "</") {/* empty */
diff --git a/bits/38_xlstypes.js b/bits/38_xlstypes.js
index 8da9cd7..683acdc 100644
--- a/bits/38_xlstypes.js
+++ b/bits/38_xlstypes.js
@@ -357,7 +357,13 @@ function parse_XLUnicodeString2(blob, length, opts) {
 }
 
 /* [MS-XLS] 2.5.61 ControlInfo */
-var parse_ControlInfo = parsenoop;
+function parse_ControlInfo(blob, length, opts) {
+	var flags = blob.read_shift(1);
+	blob.l++;
+	var accel = blob.read_shift(2);
+	blob.l += 2;
+	return [flags, accel];
+}
 
 /* [MS-OSHARED] 2.3.7.6 URLMoniker TODO: flags */
 var parse_URLMoniker = function(blob/*::, length, opts*/) {
@@ -420,7 +426,7 @@ var parse_Hyperlink = function(blob, length) {
 	if((flags & 0x0101) === 0x0001) oleMoniker = parse_HyperlinkMoniker(blob, end - blob.l);
 	if(flags & 0x0008) location = parse_HyperlinkString(blob, end - blob.l);
 	if(flags & 0x0020) guid = blob.read_shift(16);
-	if(flags & 0x0040) fileTime = parse_FILETIME(blob, 8);
+	if(flags & 0x0040) fileTime = parse_FILETIME(blob/*, 8*/);
 	blob.l = end;
 	var target = (targetFrameName||moniker||oleMoniker);
 	if(location) target+="#"+location;
diff --git a/bits/40_harb.js b/bits/40_harb.js
index 41a53ce..1aeb816 100644
--- a/bits/40_harb.js
+++ b/bits/40_harb.js
@@ -477,8 +477,9 @@ var DIF = (function() {
 })();
 
 var PRN = (function() {
-	function set_text_arr(data/*:string*/, arr/*:AOA*/, R/*:number*/, C/*:number*/) {
-		if(data === 'TRUE') arr[R][C] = true;
+	function set_text_arr(data/*:string*/, arr/*:AOA*/, R/*:number*/, C/*:number*/, o/*:any*/) {
+		if(o.raw) arr[R][C] = data;
+		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
 		else if(+data == +data) arr[R][C] = +data;
@@ -487,6 +488,7 @@ var PRN = (function() {
 	}
 
 	function prn_to_aoa_str(f/*:string*/, opts)/*:AOA*/ {
+		var o = opts || {};
 		var arr/*:AOA*/ = ([]/*:any*/);
 		if(!f || f.length === 0) return arr;
 		var lines = f.split(/[\r\n]/);
@@ -503,9 +505,9 @@ var PRN = (function() {
 			arr[R] = [];
 			/* TODO: confirm that widths are always 10 */
 			var C = 0;
-			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C);
+			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C, o);
 			for(C = 1; C <= (lines[R].length - start)/10 + 1; ++C)
-				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C);
+				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C,o);
 		}
 		return arr;
 	}
@@ -622,3 +624,4 @@ function read_wb_ID(d, opts) {
 		return PRN.to_workbook(d, opts);
 	}
 }
+
diff --git a/bits/44_offcrypto.js b/bits/44_offcrypto.js
index 4823fa5..74855d4 100644
--- a/bits/44_offcrypto.js
+++ b/bits/44_offcrypto.js
@@ -124,7 +124,7 @@ function parse_EncryptionVerifier(blob, length/*:number*/) {
 }
 
 /* [MS-OFFCRYPTO] 2.3.4.* EncryptionInfo Stream */
-function parse_EncryptionInfo(blob, length) {
+function parse_EncryptionInfo(blob, length/*:?number*/) {
 	var vers = parse_CRYPTOVersion(blob);
 	switch(vers.Minor) {
 		case 0x02: return parse_EncInfoStd(blob, vers);
@@ -156,8 +156,8 @@ function parse_EncInfoAgl(blob, vers) { throw new Error("File is password-protec
 function parse_RC4CryptoHeader(blob, length/*:number*/) {
 	var o = {};
 	var vers = o.EncryptionVersionInfo = parse_CRYPTOVersion(blob, 4); length -= 4;
-	if(vers.Minor != 2) throw 'unrecognized minor version code: ' + vers.Minor;
-	if(vers.Major > 4 || vers.Major < 2) throw 'unrecognized major version code: ' + vers.Major;
+	if(vers.Minor != 2) throw new Error('unrecognized minor version code: ' + vers.Minor);
+	if(vers.Major > 4 || vers.Major < 2) throw new Error('unrecognized major version code: ' + vers.Major);
 	o.Flags = blob.read_shift(4); length -= 4;
 	var sz = blob.read_shift(4); length -= 4;
 	o.EncryptionHeader = parse_EncryptionHeader(blob, sz); length -= sz;
@@ -294,7 +294,7 @@ function parse_FilePassHeader(blob, length/*:number*/, oo) {
 	return o;
 }
 function parse_FilePass(blob, length/*:number*/, opts) {
-	var o = { Type: blob.read_shift(2) }; /* wEncryptionType */
+	var o = { Type: opts.biff >= 8 ? blob.read_shift(2) : 0 }; /* wEncryptionType */
 	if(o.Type) parse_FilePassHeader(blob, length-2, o);
 	else parse_XORObfuscation(blob, length-2, opts, o);
 	return o;
diff --git a/bits/47_styxml.js b/bits/47_styxml.js
index 1ad777e..2b49e2e 100644
--- a/bits/47_styxml.js
+++ b/bits/47_styxml.js
@@ -8,7 +8,7 @@ function parse_borders(t, styles, themes, opts) {
 			case '<borders': case '<borders>': case '</borders>': break;
 
 			/* 18.8.4 border CT_Border */
-			case '<border': case '<border>':
+			case '<border': case '<border>': case '<border/>':
 				border = {};
 				if (y.diagonalUp) { border.diagonalUp = y.diagonalUp; }
 				if (y.diagonalDown) { border.diagonalDown = y.diagonalDown; }
@@ -80,6 +80,7 @@ function parse_fills(t, styles, themes, opts) {
 
 			/* 18.8.24 gradientFill CT_GradientFill */
 			case '<gradientFill>': break;
+			case '<gradientFill':
 			case '</gradientFill>': styles.Fills.push(fill); fill = {}; break;
 
 			/* 18.8.32 patternFill CT_PatternFill */
@@ -259,7 +260,7 @@ function parse_numFmts(t, styles, opts) {
 	}
 }
 
-function write_numFmts(NF/*:{[n:number]:string}*/, opts) {
+function write_numFmts(NF/*:{[n:number|string]:string}*/, opts) {
 	var o = ["<numFmts>"];
 	[[5,8],[23,26],[41,44],[/*63*/50,/*66],[164,*/392]].forEach(function(r) {
 		for(var i = r[0]; i <= r[1]; ++i) if(NF[i] != null) o[o.length] = (writextag('numFmt',null,{numFmtId:i,formatCode:escapexml(NF[i])}));
diff --git a/bits/67_wsxml.js b/bits/67_wsxml.js
index bdc81c5..327cd5c 100644
--- a/bits/67_wsxml.js
+++ b/bits/67_wsxml.js
@@ -410,10 +410,10 @@ function write_ws_xml_data(ws/*:Worksheet*/, opts, idx/*:number*/, wb/*:Workbook
 	}
 	if(rows) for(; R < rows.length; ++R) {
 		if(rows && rows[R]) {
-			var params = ({r:R+1}/*:any*/);
-			var row = rows[R];
+			params = ({r:R+1}/*:any*/);
+			row = rows[R];
 			if(row.hidden) params.hidden = 1;
-			var height = -1;
+			height = -1;
 			if (row.hpx) height = px2pt(row.hpx);
 			else if (row.hpt) height = row.hpt;
 			if (height > -1) { params.ht = height; params.customHeight = 1; }
diff --git a/bits/72_wbxml.js b/bits/72_wbxml.js
index 95f5123..3953617 100644
--- a/bits/72_wbxml.js
+++ b/bits/72_wbxml.js
@@ -44,13 +44,13 @@ function parse_wb_xml(data, opts)/*:WorkbookFile*/ {
 			case '<workbookProtection/>': break;
 
 			/* 18.2.1  bookViews CT_BookViews ? */
-			case '<bookViews>': case '</bookViews>': break;
+			case '<bookViews': case '<bookViews>': case '</bookViews>': break;
 			/* 18.2.30   workbookView CT_BookView + */
 			case '<workbookView': delete y[0]; wb.WBView.push(y); break;
 			case '</workbookView>': break;
 
 			/* 18.2.20 sheets CT_Sheets 1 */
-			case '<sheets>': case '</sheets>': break; // aggregate sheet
+			case '<sheets': case '<sheets>': case '</sheets>': break; // aggregate sheet
 			/* 18.2.19   sheet CT_Sheet + */
 			case '<sheet':
 				switch(y.state) {
@@ -129,7 +129,7 @@ function parse_wb_xml(data, opts)/*:WorkbookFile*/ {
 			case '<webPublishObject': break;
 
 			/* 18.2.10 extLst CT_ExtensionList ? */
-			case '<extLst>': case '</extLst>': case '<extLst/>': break;
+			case '<extLst': case '<extLst>': case '</extLst>': case '<extLst/>': break;
 			/* 18.2.7    ext CT_Extension + */
 			case '<ext': pass=true; break; //TODO: check with versions of excel
 			case '</ext>': pass=false; break;
diff --git a/bits/75_xlml.js b/bits/75_xlml.js
index a6bcdbc..5646d3f 100644
--- a/bits/75_xlml.js
+++ b/bits/75_xlml.js
@@ -161,7 +161,7 @@ function xlml_clean_comment(comment/*:any*/) {
 }
 
 function xlml_normalize(d)/*:string*/ {
-	if(has_buf &&/*::typeof Buffer !== "undefined" && d != null &&*/ Buffer.isBuffer(d)) return d.toString('utf8');
+	if(has_buf &&/*::typeof Buffer !== "undefined" && d != null && d instanceof Buffer &&*/ Buffer.isBuffer(d)) return d.toString('utf8');
 	if(typeof d === 'string') return d;
 	throw new Error("Bad input format: expected Buffer or string");
 }
@@ -175,7 +175,9 @@ function parse_xlml_xml(d, _opts)/*:Workbook*/ {
 	make_ssf(SSF);
 	var str = debom(xlml_normalize(d));
 	if(opts && opts.type == 'binary' && typeof cptable !== 'undefined') str = cptable.utils.decode(65001, char_codes(str));
-	if(str.substr(0,1000).indexOf("<html") >= 0) return HTML_.to_workbook(str, opts);
+	var opening = str.slice(0, 1024).toLowerCase(), ishtml = false;
+	if(opening.indexOf("<?xml") == -1) ["html", "table", "head", "meta", "script", "style", "div"].forEach(function(tag) { if(opening.indexOf("<" + tag) >= 0) ishtml = true; });
+	if(ishtml) return HTML_.to_workbook(str, opts);
 	var Rn;
 	var state = [], tmp;
 	if(DENSE != null && opts.dense == null) opts.dense = DENSE;
diff --git a/bits/76_xls.js b/bits/76_xls.js
index e948151..6dd5b97 100644
--- a/bits/76_xls.js
+++ b/bits/76_xls.js
@@ -25,7 +25,14 @@ function parse_compobj(obj) {
 	throw new Error("Unsupported Unicode Extension");
 }
 
-/* 2.4.58 Continue logic */
+/*
+	Continue logic for:
+	- 2.4.58 Continue
+	- 2.4.59 ContinueBigName
+	- 2.4.60 ContinueFrt
+	- 2.4.61 ContinueFrt11
+	- 2.4.62 ContinueFrt12
+*/
 function slurp(R, blob, length/*:number*/, opts) {
 	var l = length;
 	var bufs = [];
@@ -39,9 +46,13 @@ function slurp(R, blob, length/*:number*/, opts) {
 	bufs.push(d);
 	blob.l += l;
 	var next = (XLSRecordEnum[__readUInt16LE(blob,blob.l)]);
-	while(next != null && next.n === 'Continue') {
+	var start = 0;
+	while(next != null && next.n.slice(0,8) === 'Continue') {
 		l = __readUInt16LE(blob,blob.l+2);
-		bufs.push(blob.slice(blob.l+4,blob.l+4+l));
+		start = blob.l + 4;
+		if(next.n == 'ContinueFrt') start += 4;
+		else if(next.n.slice(0,11) == 'ContinueFrt') start += 12;
+		bufs.push(blob.slice(start,blob.l+4+l));
 		blob.l += 4+l;
 		next = (XLSRecordEnum[__readUInt16LE(blob, blob.l)]);
 	}
@@ -278,6 +289,7 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 						if(val.rgce && val.rgce[0] && val.rgce[0][0] && val.rgce[0][0][0] == 'PtgArea3d')
 							FilterDatabases[val.itab - 1] = { ref: encode_range(val.rgce[0][0][1][2]) };
 					break;
+				case 'ExternCount': opts.ExternCount = val; break;
 				case 'ExternSheet':
 					if(supbooks.length == 0) { supbooks[0] = []; supbooks[0].XTI = []; }
 					supbooks[supbooks.length - 1].XTI = supbooks[supbooks.length - 1].XTI.concat(val); supbooks.XTI = supbooks.XTI.concat(val); break;
@@ -557,6 +569,9 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'SXVI': break; // TODO
 				case 'SXVDEx': break; // TODO
 				case 'SxIvd': break; // TODO
+				case 'SXString': break; // TODO
+				case 'Sync': break;
+				case 'Addin': break;
 				case 'SXDI': break; // TODO
 				case 'SXLI': break; // TODO
 				case 'SXEx': break; // TODO
@@ -663,6 +678,9 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'DbOrParamQry': break;
 				case 'DBQueryExt': break;
 
+				case 'OleDbConn': break;
+				case 'ExtString': break;
+
 				/* Formatting */
 				case 'IFmtRecord': break;
 				case 'CondFmt': case 'CF': case 'CF12': case 'CFEx': break;
@@ -754,7 +772,6 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 
 				default: switch(R.n) { /* nested */
 				/* BIFF5 records */
-				case 'ExternCount': break;
 				case 'TabIdConf': case 'Radar': case 'RadarArea': case 'DropBar': case 'Intl': case 'CoordList': case 'SerAuxErrBar': break;
 
 				/* BIFF2-4 records */
@@ -766,6 +783,10 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'SCENARIO': case 'DConBin': case 'PicF': case 'DataLabExt':
 				case 'Lel': case 'BopPop': case 'BopPopCustom': case 'RealTimeData':
 				case 'Name': break;
+				case 'LHNGraph': case 'FnGroupName': case 'AddMenu': case 'LPr': break;
+				case 'ListObj': case 'ListField': break;
+				case 'RRSort': break;
+				case 'BigName': break;
 				default: if(options.WTF) throw 'Unrecognized Record ' + R.n;
 			}}}}
 		} else blob.l += length;
@@ -818,7 +839,7 @@ var CompObjP, SummaryP, WorkbookP/*:Workbook*/;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
 	/* Quattro Pro 7-8 */
 	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
 	/* Quattro Pro 9 */
diff --git a/bits/79_html.js b/bits/79_html.js
index be0914c..9237582 100644
--- a/bits/79_html.js
+++ b/bits/79_html.js
@@ -4,20 +4,23 @@ var HTML_ = (function() {
 		var opts = _opts || {};
 		if(DENSE != null && opts.dense == null) opts.dense = DENSE;
 		var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
-		var i = str.indexOf("<table"), j = str.indexOf("</table");
-		if(i == -1 || j == -1) throw new Error("Invalid HTML: missing <table> / </table> pair");
-		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/);
+		var mtch = str.match(/<table/i);
+		if(!mtch) throw new Error("Invalid HTML: could not find <table>");
+		var mtch2 = str.match(/<\/table/i);
+		var i = mtch.index, j = mtch2 && mtch2.index || str.length;
+		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/i);
 		var R = -1, C = 0, RS = 0, CS = 0;
 		var range = {s:{r:10000000, c:10000000},e:{r:0,c:0}};
 		var merges = [], midx = 0;
 		for(i = 0; i < rows.length; ++i) {
 			var row = rows[i].trim();
-			if(row.substr(0,3) == "<tr") { ++R; C = 0; continue; }
-			if(row.substr(0,3) != "<td") continue;
-			var cells = row.split("</td>");
+			var hd = row.substr(0,3).toLowerCase();
+			if(hd == "<tr") { ++R; C = 0; continue; }
+			if(hd != "<td") continue;
+			var cells = row.split(/<\/td>/i);
 			for(j = 0; j < cells.length; ++j) {
 				var cell = cells[j].trim();
-				if(cell.substr(0,3) != "<td") continue;
+				if(cell.substr(0,3).toLowerCase() != "<td") continue;
 				var m = cell, cc = 0;
 				/* TODO: parse styles etc */
 				while(m.charAt(0) == "<" && (cc = m.indexOf(">")) > -1) m = m.slice(cc+1);
diff --git a/bits/80_parseods.js b/bits/80_parseods.js
index 3d1b808..096d660 100644
--- a/bits/80_parseods.js
+++ b/bits/80_parseods.js
@@ -289,9 +289,11 @@ var parse_content_xml = (function() {
 
 			case 'forms': break; // 12.25.2 13.2
 			case 'table-column': break; // 9.1.6 <table:table-column>
+			case 'table-header-rows': break; // 9.1.7 <table:table-header-rows>
 			/* TODO: outline levels */
 			case 'table-row-group': break; // 9.1.9 <table:table-row-group>
 			case 'table-column-group': break; // 9.1.10 <table:table-column-group>
+			case 'table-header-columns': break; // 9.1.11 <table:table-header-columns>
 
 			case 'null-date': break; // 9.4.2 <table:null-date> TODO: date1904
 
@@ -299,14 +301,17 @@ var parse_content_xml = (function() {
 			case 'calculation-settings': break; // 9.4.1 <table:calculation-settings>
 			case 'named-expressions': break; // 9.4.11 <table:named-expressions>
 			case 'named-range': break; // 9.4.12 <table:named-range>
+			case 'label-range': break; // 9.4.9 <table:label-range>
+			case 'label-ranges': break; // 9.4.10 <table:label-ranges>
 			case 'named-expression': break; // 9.4.13 <table:named-expression>
 			case 'sort': break; // 9.4.19 <table:sort>
 			case 'sort-by': break; // 9.4.20 <table:sort-by>
 			case 'sort-groups': break; // 9.4.22 <table:sort-groups>
 
-			case 'span': break; // <text:span>
+			case 'tab': break; // 6.1.4 <text:tab>
 			case 'line-break': break; // 6.1.5 <text:line-break>
-			case 'p': case '文本串':
+			case 'span': break; // 6.1.7 <text:span>
+			case 'p': case '文本串': // 5.1.3 <text:p>
 				if(Rn[1]==='/') textp = (textp.length > 0 ? textp + "\n" : "") + parse_text_p(str.slice(textpidx,Rn.index), textptag);
 				else { textptag = parsexmltag(Rn[0], false); textpidx = Rn.index + Rn[0].length; }
 				break; // <text:p>
@@ -326,11 +331,14 @@ var parse_content_xml = (function() {
 			case 'title': case '标题': break; // <*:title> OR <uof:标题>
 			case 'desc': break; // <*:desc>
 
+			/* 9.2 Advanced Tables */
 			case 'table-source': break; // 9.2.6
+			case 'scenario': break; // 9.2.6
 
 			case 'iteration': break; // 9.4.3 <table:iteration>
 			case 'content-validations': break; // 9.4.4 <table:
 			case 'content-validation': break; // 9.4.5 <table:
+			case 'help-message': break; // 9.4.6 <table:
 			case 'error-message': break; // 9.4.7 <table:
 			case 'database-ranges': break; // 9.4.14 <table:database-ranges>
 			case 'filter': break; // 9.5.2 <table:filter>
@@ -385,6 +393,12 @@ var parse_content_xml = (function() {
 			case 'page-count': break; // TODO <text:page-count>
 			case 'time': break; // TODO <text:time>
 
+			/* 9.3 Advanced Table Cells */
+			case 'cell-range-source': break; // 9.3.1 <table:
+			case 'detective': break; // 9.3.2 <table:
+			case 'operation': break; // 9.3.3 <table:
+			case 'highlighted-range': break; // 9.3.4 <table:
+
 			/* 9.6 Data Pilot Tables <table: */
 			case 'data-pilot-table': // 9.6.3
 			case 'source-cell-range': // 9.6.5
@@ -423,10 +437,12 @@ var parse_content_xml = (function() {
 			/* non-standard */
 			case 'table-protection': break;
 			case 'data-pilot-grand-total': break; // <table:
+			case 'office-document-common-attrs': break; // bare
 			default:
 				if(Rn[2] === 'dc:') break; // TODO: properties
 				if(Rn[2] === 'draw:') break; // TODO: drawing
 				if(Rn[2] === 'style:') break; // TODO: styles
+				if(Rn[2] === 'form:') break; // TODO: forms
 				if(Rn[2] === 'calcext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'loext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'uof:') break; // TODO: uof
diff --git a/bits/85_parsezip.js b/bits/85_parsezip.js
index 2640e0c..d8158c7 100644
--- a/bits/85_parsezip.js
+++ b/bits/85_parsezip.js
@@ -173,20 +173,20 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	var f = 'Version';
 	var data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
@@ -194,12 +194,12 @@ function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	/* 2.3.4.3 */
 	f = '!Primary';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
 	throw new Error("File is password-protected");
diff --git a/bits/86_writezip.js b/bits/86_writezip.js
index 88c2949..437a034 100644
--- a/bits/86_writezip.js
+++ b/bits/86_writezip.js
@@ -5,7 +5,6 @@ function write_zip(wb/*:Workbook*/, opts/*:WriteOpts*/)/*:ZIP*/ {
 		wb.SSF = SSF.get_table();
 	}
 	if(wb && wb.SSF) {
-		// $FlowIgnore
 		make_ssf(SSF); SSF.load_table(wb.SSF);
 		// $FlowIgnore
 		opts.revssf = evert_num(wb.SSF); opts.revssf[wb.SSF[65535]] = 0;
diff --git a/bits/87_read.js b/bits/87_read.js
index e8e87f1..e9eee10 100644
--- a/bits/87_read.js
+++ b/bits/87_read.js
@@ -5,7 +5,7 @@ function firstbyte(f/*:RawData*/,o/*:?TypeOpts*/)/*:Array<number>*/ {
 		case 'base64': x = Base64.decode(f.substr(0,24)); break;
 		case 'binary': x = f; break;
 		case 'array':  return [f[0], f[1], f[2], f[3]];
-		default: throw new Error("Unrecognized type " + (o ? o.type : "undefined"));
+		default: throw new Error("Unrecognized type " + (o && o.type || "undefined"));
 	}
 	return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)];
 }
@@ -29,13 +29,35 @@ function read_zip(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	return parse_zip(zip, o);
 }
 
+function read_plaintext(data/*:string*/, o/*:ParseOpts*/)/*:Workbook*/ {
+	var i = 0;
+	main: while(i < data.length) switch(data.charCodeAt(i)) {
+		case 0x0A: case 0x0D: case 0x20: ++i; break;
+		case 0x3C: return parse_xlml(data.slice(i),o);
+		default: break main;
+	}
+	return PRN.to_workbook(data, o);
+}
+
+function read_plaintext_raw(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
+	var str = "", bytes = firstbyte(data, o);
+	switch(o.type) {
+		case 'base64': str = Base64.decode(data); break;
+		case 'binary': str = data; break;
+		case 'buffer': str = data.toString('binary'); break;
+		case 'array': str = cc2str(data); break;
+		default: throw new Error("Unrecognized type " + o.type);
+	}
+	if(bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF) str = utf8read(str);
+	return read_plaintext(str, o);
+}
+
 function read_utf16(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
 	var d = data;
 	if(o.type == 'base64') d = Base64.decode(d);
-	d = cptable.utils.decode(1200, d.slice(2));
+	d = cptable.utils.decode(1200, d.slice(2), 'str');
 	o.type = "binary";
-	if(d.charCodeAt(0) == 0x3C) return parse_xlml(d,o);
-	return PRN.to_workbook(d, o);
+	return read_plaintext(d, o);
 }
 
 function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
@@ -56,6 +78,8 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 		case 0xFF: if(n[1] == 0xFE){ return read_utf16(d, o); } break;
 		case 0x00: if(n[1] == 0x00 && n[2] >= 0x02 && n[3] == 0x00) return WK_.to_workbook(d, o); break;
 		case 0x03: case 0x83: case 0x8B: return DBF.to_workbook(d, o);
+		case 0x7B: if(n[1] == 0x5C && n[2] == 0x72 && n[3] == 0x74) throw new Error("Unsupported RTF"); break;
+		case 0x0A: case 0x0D: case 0x20: return read_plaintext_raw(d, o);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);
 	if(0x20>n[0]||n[0]>0x7F) throw new Error("Unsupported file " + n.join("|"));
diff --git a/demos/systemjs/systemjs.html b/demos/systemjs/systemjs.html
new file mode 100644
index 0000000..2bf6504
--- /dev/null
+++ b/demos/systemjs/systemjs.html
@@ -0,0 +1,18 @@
+<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.20.16/system.js"></script>
+<script>
+	SystemJS.config({
+		meta: {
+			'xlsx': {
+				exports: 'XLSX'
+			}
+		},
+		map: {
+			'xlsx': 'xlsx.full.min.js',
+			'fs': '',
+			'crypto': '',
+			'stream': ''
+		}
+	});
+  SystemJS.import('main.js');
+</script>
+
diff --git a/docbits/80_parseopts.md b/docbits/80_parseopts.md
index 0797a6b..c4c4b1c 100644
--- a/docbits/80_parseopts.md
+++ b/docbits/80_parseopts.md
@@ -5,6 +5,7 @@ The exported `read` and `readFile` functions accept an options argument:
 | Option Name | Default | Description                                          |
 | :---------- | ------: | :--------------------------------------------------- |
 | type        |         | Input data encoding (see Input Type below)           |
+| raw         |         | If true, plaintext parsing will not parse values **  |
 | cellFormula | true    | Save formulae to the .f field                        |
 | cellHTML    | true    | Parse rich text and save HTML to the `.h` field      |
 | cellNF      | false   | Save number format string to the `.z` field          |
@@ -24,6 +25,8 @@ The exported `read` and `readFile` functions accept an options argument:
 
 - Even if `cellNF` is false, formatted text will be generated and saved to `.w`
 - In some cases, sheets may be parsed even if `bookSheets` is false.
+- Excel aggressively tries to interpret values from CSV and other plaintext.
+  This leads to surprising behavior! The `raw` option suppresses value parsing.
 - `bookSheets` and `bookProps` combine to give both sets of information
 - `Deps` will be an empty object if `bookDeps` is falsy
 - `bookFiles` behavior depends on file type:
@@ -70,8 +73,13 @@ file but Excel will know how to handle it.  This library applies similar logic:
 | `0x50` | ZIP Archive   | XLSB or XLSX/M or ODS or UOS2 or plaintext          |
 | `0x49` | Plain Text    | SYLK or plaintext                                   |
 | `0x54` | Plain Text    | DIF or plaintext                                    |
-| `0xFE` | UTF16 Encoded | SpreadsheetML or Flat ODS or UOS1 or plaintext      |
+| `0xEF` | UTF8 Encoded  | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0xFF` | UTF16 Encoded | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 | `0x00` | Record Stream | Lotus WK\* or Quattro Pro or plaintext              |
+| `0x0A` | Plaintext     | RTF or plaintext                                    |
+| `0x0A` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x0D` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x20` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 
 DBF files are detected based on the first byte as well as the third and fourth
 bytes (corresponding to month and day of the file date)
@@ -80,13 +88,17 @@ Plaintext format guessing follows the priority order:
 
 | Format | Test                                                                |
 |:-------|:--------------------------------------------------------------------|
-| HTML   | starts with `<html`                                                 |
+| XML    | `<?xml` appears in the first 1024 characters                        |
+| HTML   | starts with `<` and HTML tags appear in the first 1024 characters * |
 | XML    | starts with `<`                                                     |
+| RTF    | starts with `{\rt`                                                  |
 | DSV    | starts with `/sep=.$/`, separator is the specified character        |
 | TSV    | one of the first 1024 characters is a tab char `"\t"`               |
 | CSV    | one of the first 1024 characters is a comma char `","`              |
 | PRN    | (default)                                                           |
 
+- HTML tags include: `html`, `table`, `head`, `meta`, `script`, `style`, `div`
+
 </details>
 
 <details>
diff --git a/misc/docs/README.md b/misc/docs/README.md
index 1de47f4..39ed37e 100644
--- a/misc/docs/README.md
+++ b/misc/docs/README.md
@@ -1270,6 +1270,7 @@ The exported `read` and `readFile` functions accept an options argument:
 | Option Name | Default | Description                                          |
 | :---------- | ------: | :--------------------------------------------------- |
 | type        |         | Input data encoding (see Input Type below)           |
+| raw         |         | If true, plaintext parsing will not parse values **  |
 | cellFormula | true    | Save formulae to the .f field                        |
 | cellHTML    | true    | Parse rich text and save HTML to the `.h` field      |
 | cellNF      | false   | Save number format string to the `.z` field          |
@@ -1289,6 +1290,8 @@ The exported `read` and `readFile` functions accept an options argument:
 
 - Even if `cellNF` is false, formatted text will be generated and saved to `.w`
 - In some cases, sheets may be parsed even if `bookSheets` is false.
+- Excel aggressively tries to interpret values from CSV and other plaintext.
+  This leads to surprising behavior! The `raw` option suppresses value parsing.
 - `bookSheets` and `bookProps` combine to give both sets of information
 - `Deps` will be an empty object if `bookDeps` is falsy
 - `bookFiles` behavior depends on file type:
@@ -1333,8 +1336,13 @@ file but Excel will know how to handle it.  This library applies similar logic:
 | `0x50` | ZIP Archive   | XLSB or XLSX/M or ODS or UOS2 or plaintext          |
 | `0x49` | Plain Text    | SYLK or plaintext                                   |
 | `0x54` | Plain Text    | DIF or plaintext                                    |
-| `0xFE` | UTF16 Encoded | SpreadsheetML or Flat ODS or UOS1 or plaintext      |
+| `0xEF` | UTF8 Encoded  | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0xFF` | UTF16 Encoded | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 | `0x00` | Record Stream | Lotus WK\* or Quattro Pro or plaintext              |
+| `0x0A` | Plaintext     | RTF or plaintext                                    |
+| `0x0A` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x0D` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
+| `0x20` | Plaintext     | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 
 DBF files are detected based on the first byte as well as the third and fourth
 bytes (corresponding to month and day of the file date)
@@ -1343,13 +1351,17 @@ Plaintext format guessing follows the priority order:
 
 | Format | Test                                                                |
 |:-------|:--------------------------------------------------------------------|
-| HTML   | starts with `<html`                                                 |
+| XML    | `<?xml` appears in the first 1024 characters                        |
+| HTML   | starts with `<` and HTML tags appear in the first 1024 characters * |
 | XML    | starts with `<`                                                     |
+| RTF    | starts with `{\rt`                                                  |
 | DSV    | starts with `/sep=.$/`, separator is the specified character        |
 | TSV    | one of the first 1024 characters is a tab char `"\t"`               |
 | CSV    | one of the first 1024 characters is a comma char `","`              |
 | PRN    | (default)                                                           |
 
+- HTML tags include: `html`, `table`, `head`, `meta`, `script`, `style`, `div`
+
 
 
 Excel is extremely aggressive in reading files.  Adding an XLS extension to any
diff --git a/package.json b/package.json
index a8a8c3c..decf7b4 100644
--- a/package.json
+++ b/package.json
@@ -17,20 +17,21 @@
 		"fs": false
 	},
 	"dependencies": {
-		"exit-on-epipe":"~1.0.0",
+		"exit-on-epipe":"~1.0.1",
 		"ssf":"~0.9.4",
 		"codepage":"~1.9.0",
 		"cfb":"~0.11.1",
 		"crc-32":"~1.0.2",
 		"adler-32":"~1.0.0",
-		"commander":"~2.9.0"
+		"commander":"~2.11.0"
 	},
 	"devDependencies": {
-		"mocha":"",
-		"xlsjs":"",
-		"@sheetjs/uglify-js":"",
-		"@types/node":"",
-		"@types/commander":"",
+		"mocha":"~2.5.3",
+		"blanket": "~1.2.3",
+		"xlsjs":"*",
+		"@sheetjs/uglify-js":"*",
+		"@types/node":"^8.0.7",
+		"@types/commander":"*",
 		"dtslint": "^0.1.2",
 		"typescript": "2.2.0"
 	},
diff --git a/test.js b/test.js
index 8dcf36c..53663a4 100644
--- a/test.js
+++ b/test.js
@@ -683,7 +683,7 @@ function custprop(wb) {
 	assert.equal(wb.Custprops.Counter, -3.14);
 }
 
-function cmparr(x){ for(var i=1;i!=x.length;++i) assert.deepEqual(x[0], x[i]); }
+function cmparr(x){ for(var i=1;i<x.length;++i) assert.deepEqual(x[0], x[i]); }
 
 function deepcmp(x,y,k,m,c) {
 	var s = k.indexOf(".");
@@ -1916,7 +1916,7 @@ mft.forEach(function(x) {
 		var fil = {}, f = [], r = x.split(/\s+/);
 		if(r.length < 3) return;
 		it('should parse all', function() {
-			for(var j = 1; j != r.length; ++j) f[j-1] = X.readFile(dir + r[0] + r[j], mfopts);
+			for(var j = 1; j < r.length; ++j) f[j-1] = X.readFile(dir + r[0] + r[j], mfopts);
 		});
 		it('should have the same sheetnames', function() {
 			cmparr(f.map(function(x) { return x.SheetNames; }));
diff --git a/tests/core.js b/tests/core.js
index e89aa12..36fdef8 100644
--- a/tests/core.js
+++ b/tests/core.js
@@ -678,7 +678,7 @@ function custprop(wb) {
 	assert.equal(wb.Custprops.Counter, -3.14);
 }
 
-function cmparr(x){ for(var i=1;i!=x.length;++i) assert.deepEqual(x[0], x[i]); }
+function cmparr(x){ for(var i=1;i<x.length;++i) assert.deepEqual(x[0], x[i]); }
 
 function deepcmp(x,y,k,m,c) {
 	var s = k.indexOf(".");
@@ -1928,7 +1928,7 @@ mft.forEach(function(x) {
 		if(r.length < 3) return;
 		if(!fs.existsSync(dir + r[0] + r[1])) return;
 		it('should parse all', function() {
-			for(var j = 1; j != r.length; ++j) f[j-1] = X.read(fs.readFileSync(dir + r[0] + r[j]), mfopts);
+			for(var j = 1; j < r.length; ++j) f[j-1] = X.read(fs.readFileSync(dir + r[0] + r[j]), mfopts);
 		});
 		it('should have the same sheetnames', function() {
 			cmparr(f.map(function(x) { return x.SheetNames; }));
diff --git a/tests/write.js b/tests/write.js
index 5e9d2d1..7c7c9bb 100644
--- a/tests/write.js
+++ b/tests/write.js
@@ -166,11 +166,12 @@ var filenames = [
 	['sheetjs.xml.xls', {bookType:'xlml'}],
 	['sheetjs.ods'],
 	['sheetjs.fods'],
-	['sheetjs.slk'],
 	['sheetjs.csv'],
 	['sheetjs.txt'],
-	['sheetjs.prn'],
-	['sheetjs.dif']
+	['sheetjs.slk'],
+	['sheetjs.htm'],
+	['sheetjs.dif'],
+	['sheetjs.prn']
 ];
 
 filenames.forEach(function(r) {
diff --git a/xlsx.flow.js b/xlsx.flow.js
index a6d7520..5fef91d 100644
--- a/xlsx.flow.js
+++ b/xlsx.flow.js
@@ -96,6 +96,7 @@ var has_buf = (typeof Buffer !== 'undefined' && typeof process !== 'undefined' &
 
 function new_raw_buf(len/*:number*/) {
 	/* jshint -W056 */
+	// $FlowIgnore
 	return new (has_buf ? Buffer : Array)(len);
 	/* jshint +W056 */
 }
@@ -3426,6 +3427,7 @@ function parse_ext_props(data, p) {
 					break;
 
 				case "Named Ranges":
+				case "名前付き一覧":
 				case "Benannte Bereiche":
 				case "Navngivne områder":
 					p.NamedRanges = len;
@@ -3512,6 +3514,7 @@ function parse_cust_props(data/*:string*/, opts) {
 						p[name] = unescapexml(text);
 						break;
 					default:
+						if(type.slice(-1) == '/') break;
 						if(opts.WTF && typeof console !== 'undefined') console.warn('Unexpected', x, type, toks);
 				}
 			} else if(x.substr(0,2) === "</") {/* empty */
@@ -3990,7 +3993,13 @@ function parse_XLUnicodeString2(blob, length, opts) {
 }
 
 /* [MS-XLS] 2.5.61 ControlInfo */
-var parse_ControlInfo = parsenoop;
+function parse_ControlInfo(blob, length, opts) {
+	var flags = blob.read_shift(1);
+	blob.l++;
+	var accel = blob.read_shift(2);
+	blob.l += 2;
+	return [flags, accel];
+}
 
 /* [MS-OSHARED] 2.3.7.6 URLMoniker TODO: flags */
 var parse_URLMoniker = function(blob/*::, length, opts*/) {
@@ -4053,7 +4062,7 @@ var parse_Hyperlink = function(blob, length) {
 	if((flags & 0x0101) === 0x0001) oleMoniker = parse_HyperlinkMoniker(blob, end - blob.l);
 	if(flags & 0x0008) location = parse_HyperlinkString(blob, end - blob.l);
 	if(flags & 0x0020) guid = blob.read_shift(16);
-	if(flags & 0x0040) fileTime = parse_FILETIME(blob, 8);
+	if(flags & 0x0040) fileTime = parse_FILETIME(blob/*, 8*/);
 	blob.l = end;
 	var target = (targetFrameName||moniker||oleMoniker);
 	if(location) target+="#"+location;
@@ -5683,8 +5692,9 @@ var DIF = (function() {
 })();
 
 var PRN = (function() {
-	function set_text_arr(data/*:string*/, arr/*:AOA*/, R/*:number*/, C/*:number*/) {
-		if(data === 'TRUE') arr[R][C] = true;
+	function set_text_arr(data/*:string*/, arr/*:AOA*/, R/*:number*/, C/*:number*/, o/*:any*/) {
+		if(o.raw) arr[R][C] = data;
+		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
 		else if(+data == +data) arr[R][C] = +data;
@@ -5693,6 +5703,7 @@ var PRN = (function() {
 	}
 
 	function prn_to_aoa_str(f/*:string*/, opts)/*:AOA*/ {
+		var o = opts || {};
 		var arr/*:AOA*/ = ([]/*:any*/);
 		if(!f || f.length === 0) return arr;
 		var lines = f.split(/[\r\n]/);
@@ -5709,9 +5720,9 @@ var PRN = (function() {
 			arr[R] = [];
 			/* TODO: confirm that widths are always 10 */
 			var C = 0;
-			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C);
+			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C, o);
 			for(C = 1; C <= (lines[R].length - start)/10 + 1; ++C)
-				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C);
+				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C,o);
 		}
 		return arr;
 	}
@@ -5828,6 +5839,7 @@ function read_wb_ID(d, opts) {
 		return PRN.to_workbook(d, opts);
 	}
 }
+
 var WK_ = (function() {
 	function lotushopper(data, cb/*:RecordHopperCB*/, opts/*:any*/) {
 		if(!data) return;
@@ -6565,7 +6577,7 @@ function parse_EncryptionVerifier(blob, length/*:number*/) {
 }
 
 /* [MS-OFFCRYPTO] 2.3.4.* EncryptionInfo Stream */
-function parse_EncryptionInfo(blob, length) {
+function parse_EncryptionInfo(blob, length/*:?number*/) {
 	var vers = parse_CRYPTOVersion(blob);
 	switch(vers.Minor) {
 		case 0x02: return parse_EncInfoStd(blob, vers);
@@ -6597,8 +6609,8 @@ function parse_EncInfoAgl(blob, vers) { throw new Error("File is password-protec
 function parse_RC4CryptoHeader(blob, length/*:number*/) {
 	var o = {};
 	var vers = o.EncryptionVersionInfo = parse_CRYPTOVersion(blob, 4); length -= 4;
-	if(vers.Minor != 2) throw 'unrecognized minor version code: ' + vers.Minor;
-	if(vers.Major > 4 || vers.Major < 2) throw 'unrecognized major version code: ' + vers.Major;
+	if(vers.Minor != 2) throw new Error('unrecognized minor version code: ' + vers.Minor);
+	if(vers.Major > 4 || vers.Major < 2) throw new Error('unrecognized major version code: ' + vers.Major);
 	o.Flags = blob.read_shift(4); length -= 4;
 	var sz = blob.read_shift(4); length -= 4;
 	o.EncryptionHeader = parse_EncryptionHeader(blob, sz); length -= sz;
@@ -6735,7 +6747,7 @@ function parse_FilePassHeader(blob, length/*:number*/, oo) {
 	return o;
 }
 function parse_FilePass(blob, length/*:number*/, opts) {
-	var o = { Type: blob.read_shift(2) }; /* wEncryptionType */
+	var o = { Type: opts.biff >= 8 ? blob.read_shift(2) : 0 }; /* wEncryptionType */
 	if(o.Type) parse_FilePassHeader(blob, length-2, o);
 	else parse_XORObfuscation(blob, length-2, opts, o);
 	return o;
@@ -6870,7 +6882,7 @@ function parse_borders(t, styles, themes, opts) {
 			case '<borders': case '<borders>': case '</borders>': break;
 
 			/* 18.8.4 border CT_Border */
-			case '<border': case '<border>':
+			case '<border': case '<border>': case '<border/>':
 				border = {};
 				if (y.diagonalUp) { border.diagonalUp = y.diagonalUp; }
 				if (y.diagonalDown) { border.diagonalDown = y.diagonalDown; }
@@ -6942,6 +6954,7 @@ function parse_fills(t, styles, themes, opts) {
 
 			/* 18.8.24 gradientFill CT_GradientFill */
 			case '<gradientFill>': break;
+			case '<gradientFill':
 			case '</gradientFill>': styles.Fills.push(fill); fill = {}; break;
 
 			/* 18.8.32 patternFill CT_PatternFill */
@@ -7121,7 +7134,7 @@ function parse_numFmts(t, styles, opts) {
 	}
 }
 
-function write_numFmts(NF/*:{[n:number]:string}*/, opts) {
+function write_numFmts(NF/*:{[n:number|string]:string}*/, opts) {
 	var o = ["<numFmts>"];
 	[[5,8],[23,26],[41,44],[/*63*/50,/*66],[164,*/392]].forEach(function(r) {
 		for(var i = r[0]; i <= r[1]; ++i) if(NF[i] != null) o[o.length] = (writextag('numFmt',null,{numFmtId:i,formatCode:escapexml(NF[i])}));
@@ -11150,10 +11163,10 @@ function write_ws_xml_data(ws/*:Worksheet*/, opts, idx/*:number*/, wb/*:Workbook
 	}
 	if(rows) for(; R < rows.length; ++R) {
 		if(rows && rows[R]) {
-			var params = ({r:R+1}/*:any*/);
-			var row = rows[R];
+			params = ({r:R+1}/*:any*/);
+			row = rows[R];
 			if(row.hidden) params.hidden = 1;
-			var height = -1;
+			height = -1;
 			if (row.hpx) height = px2pt(row.hpx);
 			else if (row.hpt) height = row.hpt;
 			if (height > -1) { params.ht = height; params.customHeight = 1; }
@@ -12412,13 +12425,13 @@ function parse_wb_xml(data, opts)/*:WorkbookFile*/ {
 			case '<workbookProtection/>': break;
 
 			/* 18.2.1  bookViews CT_BookViews ? */
-			case '<bookViews>': case '</bookViews>': break;
+			case '<bookViews': case '<bookViews>': case '</bookViews>': break;
 			/* 18.2.30   workbookView CT_BookView + */
 			case '<workbookView': delete y[0]; wb.WBView.push(y); break;
 			case '</workbookView>': break;
 
 			/* 18.2.20 sheets CT_Sheets 1 */
-			case '<sheets>': case '</sheets>': break; // aggregate sheet
+			case '<sheets': case '<sheets>': case '</sheets>': break; // aggregate sheet
 			/* 18.2.19   sheet CT_Sheet + */
 			case '<sheet':
 				switch(y.state) {
@@ -12497,7 +12510,7 @@ function parse_wb_xml(data, opts)/*:WorkbookFile*/ {
 			case '<webPublishObject': break;
 
 			/* 18.2.10 extLst CT_ExtensionList ? */
-			case '<extLst>': case '</extLst>': case '<extLst/>': break;
+			case '<extLst': case '<extLst>': case '</extLst>': case '<extLst/>': break;
 			/* 18.2.7    ext CT_Extension + */
 			case '<ext': pass=true; break; //TODO: check with versions of excel
 			case '</ext>': pass=false; break;
@@ -13113,7 +13126,7 @@ function xlml_clean_comment(comment/*:any*/) {
 }
 
 function xlml_normalize(d)/*:string*/ {
-	if(has_buf &&/*::typeof Buffer !== "undefined" && d != null &&*/ Buffer.isBuffer(d)) return d.toString('utf8');
+	if(has_buf &&/*::typeof Buffer !== "undefined" && d != null && d instanceof Buffer &&*/ Buffer.isBuffer(d)) return d.toString('utf8');
 	if(typeof d === 'string') return d;
 	throw new Error("Bad input format: expected Buffer or string");
 }
@@ -13127,7 +13140,9 @@ function parse_xlml_xml(d, _opts)/*:Workbook*/ {
 	make_ssf(SSF);
 	var str = debom(xlml_normalize(d));
 	if(opts && opts.type == 'binary' && typeof cptable !== 'undefined') str = cptable.utils.decode(65001, char_codes(str));
-	if(str.substr(0,1000).indexOf("<html") >= 0) return HTML_.to_workbook(str, opts);
+	var opening = str.slice(0, 1024).toLowerCase(), ishtml = false;
+	if(opening.indexOf("<?xml") == -1) ["html", "table", "head", "meta", "script", "style", "div"].forEach(function(tag) { if(opening.indexOf("<" + tag) >= 0) ishtml = true; });
+	if(ishtml) return HTML_.to_workbook(str, opts);
 	var Rn;
 	var state = [], tmp;
 	if(DENSE != null && opts.dense == null) opts.dense = DENSE;
@@ -14061,7 +14076,14 @@ function parse_compobj(obj) {
 	throw new Error("Unsupported Unicode Extension");
 }
 
-/* 2.4.58 Continue logic */
+/*
+	Continue logic for:
+	- 2.4.58 Continue
+	- 2.4.59 ContinueBigName
+	- 2.4.60 ContinueFrt
+	- 2.4.61 ContinueFrt11
+	- 2.4.62 ContinueFrt12
+*/
 function slurp(R, blob, length/*:number*/, opts) {
 	var l = length;
 	var bufs = [];
@@ -14075,9 +14097,13 @@ function slurp(R, blob, length/*:number*/, opts) {
 	bufs.push(d);
 	blob.l += l;
 	var next = (XLSRecordEnum[__readUInt16LE(blob,blob.l)]);
-	while(next != null && next.n === 'Continue') {
+	var start = 0;
+	while(next != null && next.n.slice(0,8) === 'Continue') {
 		l = __readUInt16LE(blob,blob.l+2);
-		bufs.push(blob.slice(blob.l+4,blob.l+4+l));
+		start = blob.l + 4;
+		if(next.n == 'ContinueFrt') start += 4;
+		else if(next.n.slice(0,11) == 'ContinueFrt') start += 12;
+		bufs.push(blob.slice(start,blob.l+4+l));
 		blob.l += 4+l;
 		next = (XLSRecordEnum[__readUInt16LE(blob, blob.l)]);
 	}
@@ -14314,6 +14340,7 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 						if(val.rgce && val.rgce[0] && val.rgce[0][0] && val.rgce[0][0][0] == 'PtgArea3d')
 							FilterDatabases[val.itab - 1] = { ref: encode_range(val.rgce[0][0][1][2]) };
 					break;
+				case 'ExternCount': opts.ExternCount = val; break;
 				case 'ExternSheet':
 					if(supbooks.length == 0) { supbooks[0] = []; supbooks[0].XTI = []; }
 					supbooks[supbooks.length - 1].XTI = supbooks[supbooks.length - 1].XTI.concat(val); supbooks.XTI = supbooks.XTI.concat(val); break;
@@ -14593,6 +14620,9 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'SXVI': break; // TODO
 				case 'SXVDEx': break; // TODO
 				case 'SxIvd': break; // TODO
+				case 'SXString': break; // TODO
+				case 'Sync': break;
+				case 'Addin': break;
 				case 'SXDI': break; // TODO
 				case 'SXLI': break; // TODO
 				case 'SXEx': break; // TODO
@@ -14699,6 +14729,9 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'DbOrParamQry': break;
 				case 'DBQueryExt': break;
 
+				case 'OleDbConn': break;
+				case 'ExtString': break;
+
 				/* Formatting */
 				case 'IFmtRecord': break;
 				case 'CondFmt': case 'CF': case 'CF12': case 'CFEx': break;
@@ -14790,7 +14823,6 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 
 				default: switch(R.n) { /* nested */
 				/* BIFF5 records */
-				case 'ExternCount': break;
 				case 'TabIdConf': case 'Radar': case 'RadarArea': case 'DropBar': case 'Intl': case 'CoordList': case 'SerAuxErrBar': break;
 
 				/* BIFF2-4 records */
@@ -14802,6 +14834,10 @@ function parse_workbook(blob, options/*:ParseOpts*/)/*:Workbook*/ {
 				case 'SCENARIO': case 'DConBin': case 'PicF': case 'DataLabExt':
 				case 'Lel': case 'BopPop': case 'BopPopCustom': case 'RealTimeData':
 				case 'Name': break;
+				case 'LHNGraph': case 'FnGroupName': case 'AddMenu': case 'LPr': break;
+				case 'ListObj': case 'ListField': break;
+				case 'RRSort': break;
+				case 'BigName': break;
 				default: if(options.WTF) throw 'Unrecognized Record ' + R.n;
 			}}}}
 		} else blob.l += length;
@@ -14854,7 +14890,7 @@ var CompObjP, SummaryP, WorkbookP/*:Workbook*/;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
 	/* Quattro Pro 7-8 */
 	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
 	/* Quattro Pro 9 */
@@ -16239,20 +16275,23 @@ var HTML_ = (function() {
 		var opts = _opts || {};
 		if(DENSE != null && opts.dense == null) opts.dense = DENSE;
 		var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
-		var i = str.indexOf("<table"), j = str.indexOf("</table");
-		if(i == -1 || j == -1) throw new Error("Invalid HTML: missing <table> / </table> pair");
-		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/);
+		var mtch = str.match(/<table/i);
+		if(!mtch) throw new Error("Invalid HTML: could not find <table>");
+		var mtch2 = str.match(/<\/table/i);
+		var i = mtch.index, j = mtch2 && mtch2.index || str.length;
+		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/i);
 		var R = -1, C = 0, RS = 0, CS = 0;
 		var range = {s:{r:10000000, c:10000000},e:{r:0,c:0}};
 		var merges = [], midx = 0;
 		for(i = 0; i < rows.length; ++i) {
 			var row = rows[i].trim();
-			if(row.substr(0,3) == "<tr") { ++R; C = 0; continue; }
-			if(row.substr(0,3) != "<td") continue;
-			var cells = row.split("</td>");
+			var hd = row.substr(0,3).toLowerCase();
+			if(hd == "<tr") { ++R; C = 0; continue; }
+			if(hd != "<td") continue;
+			var cells = row.split(/<\/td>/i);
 			for(j = 0; j < cells.length; ++j) {
 				var cell = cells[j].trim();
-				if(cell.substr(0,3) != "<td") continue;
+				if(cell.substr(0,3).toLowerCase() != "<td") continue;
 				var m = cell, cc = 0;
 				/* TODO: parse styles etc */
 				while(m.charAt(0) == "<" && (cc = m.indexOf(">")) > -1) m = m.slice(cc+1);
@@ -16678,9 +16717,11 @@ var parse_content_xml = (function() {
 
 			case 'forms': break; // 12.25.2 13.2
 			case 'table-column': break; // 9.1.6 <table:table-column>
+			case 'table-header-rows': break; // 9.1.7 <table:table-header-rows>
 			/* TODO: outline levels */
 			case 'table-row-group': break; // 9.1.9 <table:table-row-group>
 			case 'table-column-group': break; // 9.1.10 <table:table-column-group>
+			case 'table-header-columns': break; // 9.1.11 <table:table-header-columns>
 
 			case 'null-date': break; // 9.4.2 <table:null-date> TODO: date1904
 
@@ -16688,14 +16729,17 @@ var parse_content_xml = (function() {
 			case 'calculation-settings': break; // 9.4.1 <table:calculation-settings>
 			case 'named-expressions': break; // 9.4.11 <table:named-expressions>
 			case 'named-range': break; // 9.4.12 <table:named-range>
+			case 'label-range': break; // 9.4.9 <table:label-range>
+			case 'label-ranges': break; // 9.4.10 <table:label-ranges>
 			case 'named-expression': break; // 9.4.13 <table:named-expression>
 			case 'sort': break; // 9.4.19 <table:sort>
 			case 'sort-by': break; // 9.4.20 <table:sort-by>
 			case 'sort-groups': break; // 9.4.22 <table:sort-groups>
 
-			case 'span': break; // <text:span>
+			case 'tab': break; // 6.1.4 <text:tab>
 			case 'line-break': break; // 6.1.5 <text:line-break>
-			case 'p': case '文本串':
+			case 'span': break; // 6.1.7 <text:span>
+			case 'p': case '文本串': // 5.1.3 <text:p>
 				if(Rn[1]==='/') textp = (textp.length > 0 ? textp + "\n" : "") + parse_text_p(str.slice(textpidx,Rn.index), textptag);
 				else { textptag = parsexmltag(Rn[0], false); textpidx = Rn.index + Rn[0].length; }
 				break; // <text:p>
@@ -16715,11 +16759,14 @@ var parse_content_xml = (function() {
 			case 'title': case '标题': break; // <*:title> OR <uof:标题>
 			case 'desc': break; // <*:desc>
 
+			/* 9.2 Advanced Tables */
 			case 'table-source': break; // 9.2.6
+			case 'scenario': break; // 9.2.6
 
 			case 'iteration': break; // 9.4.3 <table:iteration>
 			case 'content-validations': break; // 9.4.4 <table:
 			case 'content-validation': break; // 9.4.5 <table:
+			case 'help-message': break; // 9.4.6 <table:
 			case 'error-message': break; // 9.4.7 <table:
 			case 'database-ranges': break; // 9.4.14 <table:database-ranges>
 			case 'filter': break; // 9.5.2 <table:filter>
@@ -16774,6 +16821,12 @@ var parse_content_xml = (function() {
 			case 'page-count': break; // TODO <text:page-count>
 			case 'time': break; // TODO <text:time>
 
+			/* 9.3 Advanced Table Cells */
+			case 'cell-range-source': break; // 9.3.1 <table:
+			case 'detective': break; // 9.3.2 <table:
+			case 'operation': break; // 9.3.3 <table:
+			case 'highlighted-range': break; // 9.3.4 <table:
+
 			/* 9.6 Data Pilot Tables <table: */
 			case 'data-pilot-table': // 9.6.3
 			case 'source-cell-range': // 9.6.5
@@ -16812,10 +16865,12 @@ var parse_content_xml = (function() {
 			/* non-standard */
 			case 'table-protection': break;
 			case 'data-pilot-grand-total': break; // <table:
+			case 'office-document-common-attrs': break; // bare
 			default:
 				if(Rn[2] === 'dc:') break; // TODO: properties
 				if(Rn[2] === 'draw:') break; // TODO: drawing
 				if(Rn[2] === 'style:') break; // TODO: styles
+				if(Rn[2] === 'form:') break; // TODO: forms
 				if(Rn[2] === 'calcext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'loext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'uof:') break; // TODO: uof
@@ -17274,20 +17329,20 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	var f = 'Version';
 	var data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
@@ -17295,12 +17350,12 @@ function parse_xlsxcfb(cfb, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	/* 2.3.4.3 */
 	f = '!Primary';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
 	throw new Error("File is password-protected");
@@ -17313,7 +17368,6 @@ function write_zip(wb/*:Workbook*/, opts/*:WriteOpts*/)/*:ZIP*/ {
 		wb.SSF = SSF.get_table();
 	}
 	if(wb && wb.SSF) {
-		// $FlowIgnore
 		make_ssf(SSF); SSF.load_table(wb.SSF);
 		// $FlowIgnore
 		opts.revssf = evert_num(wb.SSF); opts.revssf[wb.SSF[65535]] = 0;
@@ -17446,7 +17500,7 @@ function firstbyte(f/*:RawData*/,o/*:?TypeOpts*/)/*:Array<number>*/ {
 		case 'base64': x = Base64.decode(f.substr(0,24)); break;
 		case 'binary': x = f; break;
 		case 'array':  return [f[0], f[1], f[2], f[3]];
-		default: throw new Error("Unrecognized type " + (o ? o.type : "undefined"));
+		default: throw new Error("Unrecognized type " + (o && o.type || "undefined"));
 	}
 	return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)];
 }
@@ -17470,13 +17524,35 @@ function read_zip(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 	return parse_zip(zip, o);
 }
 
+function read_plaintext(data/*:string*/, o/*:ParseOpts*/)/*:Workbook*/ {
+	var i = 0;
+	main: while(i < data.length) switch(data.charCodeAt(i)) {
+		case 0x0A: case 0x0D: case 0x20: ++i; break;
+		case 0x3C: return parse_xlml(data.slice(i),o);
+		default: break main;
+	}
+	return PRN.to_workbook(data, o);
+}
+
+function read_plaintext_raw(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
+	var str = "", bytes = firstbyte(data, o);
+	switch(o.type) {
+		case 'base64': str = Base64.decode(data); break;
+		case 'binary': str = data; break;
+		case 'buffer': str = data.toString('binary'); break;
+		case 'array': str = cc2str(data); break;
+		default: throw new Error("Unrecognized type " + o.type);
+	}
+	if(bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF) str = utf8read(str);
+	return read_plaintext(str, o);
+}
+
 function read_utf16(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
 	var d = data;
 	if(o.type == 'base64') d = Base64.decode(d);
-	d = cptable.utils.decode(1200, d.slice(2));
+	d = cptable.utils.decode(1200, d.slice(2), 'str');
 	o.type = "binary";
-	if(d.charCodeAt(0) == 0x3C) return parse_xlml(d,o);
-	return PRN.to_workbook(d, o);
+	return read_plaintext(d, o);
 }
 
 function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
@@ -17497,6 +17573,8 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 		case 0xFF: if(n[1] == 0xFE){ return read_utf16(d, o); } break;
 		case 0x00: if(n[1] == 0x00 && n[2] >= 0x02 && n[3] == 0x00) return WK_.to_workbook(d, o); break;
 		case 0x03: case 0x83: case 0x8B: return DBF.to_workbook(d, o);
+		case 0x7B: if(n[1] == 0x5C && n[2] == 0x72 && n[3] == 0x74) throw new Error("Unsupported RTF"); break;
+		case 0x0A: case 0x0D: case 0x20: return read_plaintext_raw(d, o);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);
 	if(0x20>n[0]||n[0]>0x7F) throw new Error("Unsupported file " + n.join("|"));
diff --git a/xlsx.js b/xlsx.js
index d88df54..a76bb54 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -95,6 +95,7 @@ var has_buf = (typeof Buffer !== 'undefined' && typeof process !== 'undefined' &
 
 function new_raw_buf(len) {
 	/* jshint -W056 */
+	// $FlowIgnore
 	return new (has_buf ? Buffer : Array)(len);
 	/* jshint +W056 */
 }
@@ -3366,6 +3367,7 @@ function parse_ext_props(data, p) {
 					break;
 
 				case "Named Ranges":
+				case "名前付き一覧":
 				case "Benannte Bereiche":
 				case "Navngivne områder":
 					p.NamedRanges = len;
@@ -3452,6 +3454,7 @@ function parse_cust_props(data, opts) {
 						p[name] = unescapexml(text);
 						break;
 					default:
+						if(type.slice(-1) == '/') break;
 						if(opts.WTF && typeof console !== 'undefined') console.warn('Unexpected', x, type, toks);
 				}
 			} else if(x.substr(0,2) === "</") {/* empty */
@@ -3928,7 +3931,13 @@ function parse_XLUnicodeString2(blob, length, opts) {
 }
 
 /* [MS-XLS] 2.5.61 ControlInfo */
-var parse_ControlInfo = parsenoop;
+function parse_ControlInfo(blob, length, opts) {
+	var flags = blob.read_shift(1);
+	blob.l++;
+	var accel = blob.read_shift(2);
+	blob.l += 2;
+	return [flags, accel];
+}
 
 /* [MS-OSHARED] 2.3.7.6 URLMoniker TODO: flags */
 var parse_URLMoniker = function(blob) {
@@ -3991,7 +4000,7 @@ var parse_Hyperlink = function(blob, length) {
 	if((flags & 0x0101) === 0x0001) oleMoniker = parse_HyperlinkMoniker(blob, end - blob.l);
 	if(flags & 0x0008) location = parse_HyperlinkString(blob, end - blob.l);
 	if(flags & 0x0020) guid = blob.read_shift(16);
-	if(flags & 0x0040) fileTime = parse_FILETIME(blob, 8);
+	if(flags & 0x0040) fileTime = parse_FILETIME(blob/*, 8*/);
 	blob.l = end;
 	var target = (targetFrameName||moniker||oleMoniker);
 	if(location) target+="#"+location;
@@ -5621,8 +5630,9 @@ var DIF = (function() {
 })();
 
 var PRN = (function() {
-	function set_text_arr(data, arr, R, C) {
-		if(data === 'TRUE') arr[R][C] = true;
+	function set_text_arr(data, arr, R, C, o) {
+		if(o.raw) arr[R][C] = data;
+		else if(data === 'TRUE') arr[R][C] = true;
 		else if(data === 'FALSE') arr[R][C] = false;
 		else if(data === ""){/* empty */}
 		else if(+data == +data) arr[R][C] = +data;
@@ -5631,6 +5641,7 @@ var PRN = (function() {
 	}
 
 	function prn_to_aoa_str(f, opts) {
+		var o = opts || {};
 		var arr = ([]);
 		if(!f || f.length === 0) return arr;
 		var lines = f.split(/[\r\n]/);
@@ -5647,9 +5658,9 @@ var PRN = (function() {
 			arr[R] = [];
 			/* TODO: confirm that widths are always 10 */
 			var C = 0;
-			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C);
+			set_text_arr(lines[R].slice(0, start).trim(), arr, R, C, o);
 			for(C = 1; C <= (lines[R].length - start)/10 + 1; ++C)
-				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C);
+				set_text_arr(lines[R].slice(start+(C-1)*10,start+C*10).trim(),arr,R,C,o);
 		}
 		return arr;
 	}
@@ -5766,6 +5777,7 @@ function read_wb_ID(d, opts) {
 		return PRN.to_workbook(d, opts);
 	}
 }
+
 var WK_ = (function() {
 	function lotushopper(data, cb, opts) {
 		if(!data) return;
@@ -6534,8 +6546,8 @@ function parse_EncInfoAgl(blob, vers) { throw new Error("File is password-protec
 function parse_RC4CryptoHeader(blob, length) {
 	var o = {};
 	var vers = o.EncryptionVersionInfo = parse_CRYPTOVersion(blob, 4); length -= 4;
-	if(vers.Minor != 2) throw 'unrecognized minor version code: ' + vers.Minor;
-	if(vers.Major > 4 || vers.Major < 2) throw 'unrecognized major version code: ' + vers.Major;
+	if(vers.Minor != 2) throw new Error('unrecognized minor version code: ' + vers.Minor);
+	if(vers.Major > 4 || vers.Major < 2) throw new Error('unrecognized major version code: ' + vers.Major);
 	o.Flags = blob.read_shift(4); length -= 4;
 	var sz = blob.read_shift(4); length -= 4;
 	o.EncryptionHeader = parse_EncryptionHeader(blob, sz); length -= sz;
@@ -6672,7 +6684,7 @@ function parse_FilePassHeader(blob, length, oo) {
 	return o;
 }
 function parse_FilePass(blob, length, opts) {
-	var o = { Type: blob.read_shift(2) }; /* wEncryptionType */
+	var o = { Type: opts.biff >= 8 ? blob.read_shift(2) : 0 }; /* wEncryptionType */
 	if(o.Type) parse_FilePassHeader(blob, length-2, o);
 	else parse_XORObfuscation(blob, length-2, opts, o);
 	return o;
@@ -6807,7 +6819,7 @@ function parse_borders(t, styles, themes, opts) {
 			case '<borders': case '<borders>': case '</borders>': break;
 
 			/* 18.8.4 border CT_Border */
-			case '<border': case '<border>':
+			case '<border': case '<border>': case '<border/>':
 				border = {};
 				if (y.diagonalUp) { border.diagonalUp = y.diagonalUp; }
 				if (y.diagonalDown) { border.diagonalDown = y.diagonalDown; }
@@ -6879,6 +6891,7 @@ function parse_fills(t, styles, themes, opts) {
 
 			/* 18.8.24 gradientFill CT_GradientFill */
 			case '<gradientFill>': break;
+			case '<gradientFill':
 			case '</gradientFill>': styles.Fills.push(fill); fill = {}; break;
 
 			/* 18.8.32 patternFill CT_PatternFill */
@@ -11084,10 +11097,10 @@ function write_ws_xml_data(ws, opts, idx, wb, rels) {
 	}
 	if(rows) for(; R < rows.length; ++R) {
 		if(rows && rows[R]) {
-			var params = ({r:R+1});
-			var row = rows[R];
+			params = ({r:R+1});
+			row = rows[R];
 			if(row.hidden) params.hidden = 1;
-			var height = -1;
+			height = -1;
 			if (row.hpx) height = px2pt(row.hpx);
 			else if (row.hpt) height = row.hpt;
 			if (height > -1) { params.ht = height; params.customHeight = 1; }
@@ -12345,13 +12358,13 @@ function parse_wb_xml(data, opts) {
 			case '<workbookProtection/>': break;
 
 			/* 18.2.1  bookViews CT_BookViews ? */
-			case '<bookViews>': case '</bookViews>': break;
+			case '<bookViews': case '<bookViews>': case '</bookViews>': break;
 			/* 18.2.30   workbookView CT_BookView + */
 			case '<workbookView': delete y[0]; wb.WBView.push(y); break;
 			case '</workbookView>': break;
 
 			/* 18.2.20 sheets CT_Sheets 1 */
-			case '<sheets>': case '</sheets>': break; // aggregate sheet
+			case '<sheets': case '<sheets>': case '</sheets>': break; // aggregate sheet
 			/* 18.2.19   sheet CT_Sheet + */
 			case '<sheet':
 				switch(y.state) {
@@ -12430,7 +12443,7 @@ function parse_wb_xml(data, opts) {
 			case '<webPublishObject': break;
 
 			/* 18.2.10 extLst CT_ExtensionList ? */
-			case '<extLst>': case '</extLst>': case '<extLst/>': break;
+			case '<extLst': case '<extLst>': case '</extLst>': case '<extLst/>': break;
 			/* 18.2.7    ext CT_Extension + */
 			case '<ext': pass=true; break; //TODO: check with versions of excel
 			case '</ext>': pass=false; break;
@@ -13057,7 +13070,9 @@ function parse_xlml_xml(d, _opts) {
 	make_ssf(SSF);
 	var str = debom(xlml_normalize(d));
 	if(opts && opts.type == 'binary' && typeof cptable !== 'undefined') str = cptable.utils.decode(65001, char_codes(str));
-	if(str.substr(0,1000).indexOf("<html") >= 0) return HTML_.to_workbook(str, opts);
+	var opening = str.slice(0, 1024).toLowerCase(), ishtml = false;
+	if(opening.indexOf("<?xml") == -1) ["html", "table", "head", "meta", "script", "style", "div"].forEach(function(tag) { if(opening.indexOf("<" + tag) >= 0) ishtml = true; });
+	if(ishtml) return HTML_.to_workbook(str, opts);
 	var Rn;
 	var state = [], tmp;
 	if(DENSE != null && opts.dense == null) opts.dense = DENSE;
@@ -13988,7 +14003,14 @@ function parse_compobj(obj) {
 	throw new Error("Unsupported Unicode Extension");
 }
 
-/* 2.4.58 Continue logic */
+/*
+	Continue logic for:
+	- 2.4.58 Continue
+	- 2.4.59 ContinueBigName
+	- 2.4.60 ContinueFrt
+	- 2.4.61 ContinueFrt11
+	- 2.4.62 ContinueFrt12
+*/
 function slurp(R, blob, length, opts) {
 	var l = length;
 	var bufs = [];
@@ -14002,9 +14024,13 @@ function slurp(R, blob, length, opts) {
 	bufs.push(d);
 	blob.l += l;
 	var next = (XLSRecordEnum[__readUInt16LE(blob,blob.l)]);
-	while(next != null && next.n === 'Continue') {
+	var start = 0;
+	while(next != null && next.n.slice(0,8) === 'Continue') {
 		l = __readUInt16LE(blob,blob.l+2);
-		bufs.push(blob.slice(blob.l+4,blob.l+4+l));
+		start = blob.l + 4;
+		if(next.n == 'ContinueFrt') start += 4;
+		else if(next.n.slice(0,11) == 'ContinueFrt') start += 12;
+		bufs.push(blob.slice(start,blob.l+4+l));
 		blob.l += 4+l;
 		next = (XLSRecordEnum[__readUInt16LE(blob, blob.l)]);
 	}
@@ -14240,6 +14266,7 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 						if(val.rgce && val.rgce[0] && val.rgce[0][0] && val.rgce[0][0][0] == 'PtgArea3d')
 							FilterDatabases[val.itab - 1] = { ref: encode_range(val.rgce[0][0][1][2]) };
 					break;
+				case 'ExternCount': opts.ExternCount = val; break;
 				case 'ExternSheet':
 					if(supbooks.length == 0) { supbooks[0] = []; supbooks[0].XTI = []; }
 					supbooks[supbooks.length - 1].XTI = supbooks[supbooks.length - 1].XTI.concat(val); supbooks.XTI = supbooks.XTI.concat(val); break;
@@ -14519,6 +14546,9 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 				case 'SXVI': break; // TODO
 				case 'SXVDEx': break; // TODO
 				case 'SxIvd': break; // TODO
+				case 'SXString': break; // TODO
+				case 'Sync': break;
+				case 'Addin': break;
 				case 'SXDI': break; // TODO
 				case 'SXLI': break; // TODO
 				case 'SXEx': break; // TODO
@@ -14625,6 +14655,9 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 				case 'DbOrParamQry': break;
 				case 'DBQueryExt': break;
 
+				case 'OleDbConn': break;
+				case 'ExtString': break;
+
 				/* Formatting */
 				case 'IFmtRecord': break;
 				case 'CondFmt': case 'CF': case 'CF12': case 'CFEx': break;
@@ -14716,7 +14749,6 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 
 				default: switch(R.n) { /* nested */
 				/* BIFF5 records */
-				case 'ExternCount': break;
 				case 'TabIdConf': case 'Radar': case 'RadarArea': case 'DropBar': case 'Intl': case 'CoordList': case 'SerAuxErrBar': break;
 
 				/* BIFF2-4 records */
@@ -14728,6 +14760,10 @@ wb.opts.Date1904 = Workbook.WBProps.date1904 = val; break;
 				case 'SCENARIO': case 'DConBin': case 'PicF': case 'DataLabExt':
 				case 'Lel': case 'BopPop': case 'BopPopCustom': case 'RealTimeData':
 				case 'Name': break;
+				case 'LHNGraph': case 'FnGroupName': case 'AddMenu': case 'LPr': break;
+				case 'ListObj': case 'ListField': break;
+				case 'RRSort': break;
+				case 'BigName': break;
 				default: if(options.WTF) throw 'Unrecognized Record ' + R.n;
 			}}}}
 		} else blob.l += length;
@@ -14780,7 +14816,7 @@ var CompObjP, SummaryP, WorkbookP;
 if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({});
 else {
-	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options);
 	/* Quattro Pro 7-8 */
 	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
 	/* Quattro Pro 9 */
@@ -16165,20 +16201,23 @@ var HTML_ = (function() {
 		var opts = _opts || {};
 		if(DENSE != null && opts.dense == null) opts.dense = DENSE;
 		var ws = opts.dense ? ([]) : ({});
-		var i = str.indexOf("<table"), j = str.indexOf("</table");
-		if(i == -1 || j == -1) throw new Error("Invalid HTML: missing <table> / </table> pair");
-		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/);
+		var mtch = str.match(/<table/i);
+		if(!mtch) throw new Error("Invalid HTML: could not find <table>");
+		var mtch2 = str.match(/<\/table/i);
+		var i = mtch.index, j = mtch2 && mtch2.index || str.length;
+		var rows = str.slice(i, j).split(/(:?<tr[^>]*>)/i);
 		var R = -1, C = 0, RS = 0, CS = 0;
 		var range = {s:{r:10000000, c:10000000},e:{r:0,c:0}};
 		var merges = [], midx = 0;
 		for(i = 0; i < rows.length; ++i) {
 			var row = rows[i].trim();
-			if(row.substr(0,3) == "<tr") { ++R; C = 0; continue; }
-			if(row.substr(0,3) != "<td") continue;
-			var cells = row.split("</td>");
+			var hd = row.substr(0,3).toLowerCase();
+			if(hd == "<tr") { ++R; C = 0; continue; }
+			if(hd != "<td") continue;
+			var cells = row.split(/<\/td>/i);
 			for(j = 0; j < cells.length; ++j) {
 				var cell = cells[j].trim();
-				if(cell.substr(0,3) != "<td") continue;
+				if(cell.substr(0,3).toLowerCase() != "<td") continue;
 				var m = cell, cc = 0;
 				/* TODO: parse styles etc */
 				while(m.charAt(0) == "<" && (cc = m.indexOf(">")) > -1) m = m.slice(cc+1);
@@ -16604,9 +16643,11 @@ var parse_content_xml = (function() {
 
 			case 'forms': break; // 12.25.2 13.2
 			case 'table-column': break; // 9.1.6 <table:table-column>
+			case 'table-header-rows': break; // 9.1.7 <table:table-header-rows>
 			/* TODO: outline levels */
 			case 'table-row-group': break; // 9.1.9 <table:table-row-group>
 			case 'table-column-group': break; // 9.1.10 <table:table-column-group>
+			case 'table-header-columns': break; // 9.1.11 <table:table-header-columns>
 
 			case 'null-date': break; // 9.4.2 <table:null-date> TODO: date1904
 
@@ -16614,14 +16655,17 @@ var parse_content_xml = (function() {
 			case 'calculation-settings': break; // 9.4.1 <table:calculation-settings>
 			case 'named-expressions': break; // 9.4.11 <table:named-expressions>
 			case 'named-range': break; // 9.4.12 <table:named-range>
+			case 'label-range': break; // 9.4.9 <table:label-range>
+			case 'label-ranges': break; // 9.4.10 <table:label-ranges>
 			case 'named-expression': break; // 9.4.13 <table:named-expression>
 			case 'sort': break; // 9.4.19 <table:sort>
 			case 'sort-by': break; // 9.4.20 <table:sort-by>
 			case 'sort-groups': break; // 9.4.22 <table:sort-groups>
 
-			case 'span': break; // <text:span>
+			case 'tab': break; // 6.1.4 <text:tab>
 			case 'line-break': break; // 6.1.5 <text:line-break>
-			case 'p': case '文本串':
+			case 'span': break; // 6.1.7 <text:span>
+			case 'p': case '文本串': // 5.1.3 <text:p>
 				if(Rn[1]==='/') textp = (textp.length > 0 ? textp + "\n" : "") + parse_text_p(str.slice(textpidx,Rn.index), textptag);
 				else { textptag = parsexmltag(Rn[0], false); textpidx = Rn.index + Rn[0].length; }
 				break; // <text:p>
@@ -16641,11 +16685,14 @@ var parse_content_xml = (function() {
 			case 'title': case '标题': break; // <*:title> OR <uof:标题>
 			case 'desc': break; // <*:desc>
 
+			/* 9.2 Advanced Tables */
 			case 'table-source': break; // 9.2.6
+			case 'scenario': break; // 9.2.6
 
 			case 'iteration': break; // 9.4.3 <table:iteration>
 			case 'content-validations': break; // 9.4.4 <table:
 			case 'content-validation': break; // 9.4.5 <table:
+			case 'help-message': break; // 9.4.6 <table:
 			case 'error-message': break; // 9.4.7 <table:
 			case 'database-ranges': break; // 9.4.14 <table:database-ranges>
 			case 'filter': break; // 9.5.2 <table:filter>
@@ -16700,6 +16747,12 @@ var parse_content_xml = (function() {
 			case 'page-count': break; // TODO <text:page-count>
 			case 'time': break; // TODO <text:time>
 
+			/* 9.3 Advanced Table Cells */
+			case 'cell-range-source': break; // 9.3.1 <table:
+			case 'detective': break; // 9.3.2 <table:
+			case 'operation': break; // 9.3.3 <table:
+			case 'highlighted-range': break; // 9.3.4 <table:
+
 			/* 9.6 Data Pilot Tables <table: */
 			case 'data-pilot-table': // 9.6.3
 			case 'source-cell-range': // 9.6.5
@@ -16738,10 +16791,12 @@ var parse_content_xml = (function() {
 			/* non-standard */
 			case 'table-protection': break;
 			case 'data-pilot-grand-total': break; // <table:
+			case 'office-document-common-attrs': break; // bare
 			default:
 				if(Rn[2] === 'dc:') break; // TODO: properties
 				if(Rn[2] === 'draw:') break; // TODO: drawing
 				if(Rn[2] === 'style:') break; // TODO: styles
+				if(Rn[2] === 'form:') break; // TODO: forms
 				if(Rn[2] === 'calcext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'loext:') break; // ignore undocumented extensions
 				if(Rn[2] === 'uof:') break; // TODO: uof
@@ -17199,20 +17254,20 @@ function parse_zip(zip, opts) {
 function parse_xlsxcfb(cfb, opts) {
 	var f = 'Version';
 	var data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var version = parse_DataSpaceVersionInfo(data.content);
 
 	/* 2.3.4.1 */
 	f = 'DataSpaceMap';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var dsm = parse_DataSpaceMap(data.content);
 	if(dsm.length != 1 || dsm[0].comps.length != 1 || dsm[0].comps[0].t != 0 || dsm[0].name != "StrongEncryptionDataSpace" || dsm[0].comps[0].v != "EncryptedPackage")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
 
 	f = 'StrongEncryptionDataSpace';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var seds = parse_DataSpaceDefinition(data.content);
 	if(seds.length != 1 || seds[0] != "StrongEncryptionTransform")
 		throw new Error("ECMA-376 Encrypted file bad " + f);
@@ -17220,12 +17275,12 @@ function parse_xlsxcfb(cfb, opts) {
 	/* 2.3.4.3 */
 	f = '!Primary';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var hdr = parse_Primary(data.content);
 
 	f = 'EncryptionInfo';
 	data = cfb.find(f);
-	if(!data) throw new Error("ECMA-376 Encrypted file missing " + f);
+	if(!data || !data.content) throw new Error("ECMA-376 Encrypted file missing " + f);
 	var einfo = parse_EncryptionInfo(data.content);
 
 	throw new Error("File is password-protected");
@@ -17238,7 +17293,6 @@ function write_zip(wb, opts) {
 		wb.SSF = SSF.get_table();
 	}
 	if(wb && wb.SSF) {
-		// $FlowIgnore
 		make_ssf(SSF); SSF.load_table(wb.SSF);
 		// $FlowIgnore
 		opts.revssf = evert_num(wb.SSF); opts.revssf[wb.SSF[65535]] = 0;
@@ -17369,7 +17423,7 @@ function firstbyte(f,o) {
 		case 'base64': x = Base64.decode(f.substr(0,24)); break;
 		case 'binary': x = f; break;
 		case 'array':  return [f[0], f[1], f[2], f[3]];
-		default: throw new Error("Unrecognized type " + (o ? o.type : "undefined"));
+		default: throw new Error("Unrecognized type " + (o && o.type || "undefined"));
 	}
 	return [x.charCodeAt(0), x.charCodeAt(1), x.charCodeAt(2), x.charCodeAt(3)];
 }
@@ -17392,13 +17446,35 @@ var zip, d = data;
 	return parse_zip(zip, o);
 }
 
+function read_plaintext(data, o) {
+	var i = 0;
+	main: while(i < data.length) switch(data.charCodeAt(i)) {
+		case 0x0A: case 0x0D: case 0x20: ++i; break;
+		case 0x3C: return parse_xlml(data.slice(i),o);
+		default: break main;
+	}
+	return PRN.to_workbook(data, o);
+}
+
+function read_plaintext_raw(data, o) {
+	var str = "", bytes = firstbyte(data, o);
+	switch(o.type) {
+		case 'base64': str = Base64.decode(data); break;
+		case 'binary': str = data; break;
+		case 'buffer': str = data.toString('binary'); break;
+		case 'array': str = cc2str(data); break;
+		default: throw new Error("Unrecognized type " + o.type);
+	}
+	if(bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF) str = utf8read(str);
+	return read_plaintext(str, o);
+}
+
 function read_utf16(data, o) {
 	var d = data;
 	if(o.type == 'base64') d = Base64.decode(d);
-	d = cptable.utils.decode(1200, d.slice(2));
+	d = cptable.utils.decode(1200, d.slice(2), 'str');
 	o.type = "binary";
-	if(d.charCodeAt(0) == 0x3C) return parse_xlml(d,o);
-	return PRN.to_workbook(d, o);
+	return read_plaintext(d, o);
 }
 
 function readSync(data, opts) {
@@ -17419,6 +17495,8 @@ function readSync(data, opts) {
 		case 0xFF: if(n[1] == 0xFE){ return read_utf16(d, o); } break;
 		case 0x00: if(n[1] == 0x00 && n[2] >= 0x02 && n[3] == 0x00) return WK_.to_workbook(d, o); break;
 		case 0x03: case 0x83: case 0x8B: return DBF.to_workbook(d, o);
+		case 0x7B: if(n[1] == 0x5C && n[2] == 0x72 && n[3] == 0x74) throw new Error("Unsupported RTF"); break;
+		case 0x0A: case 0x0D: case 0x20: return read_plaintext_raw(d, o);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);
 	if(0x20>n[0]||n[0]>0x7F) throw new Error("Unsupported file " + n.join("|"));