diff --git a/.gitignore b/.gitignore
index e4ab83c..899a94e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,7 +7,7 @@ v8.log
 tmp
 *.txt
 *.[cC][sS][vV]
-*.[dD][iI][fF]
+*.[dD][iIbB][fF]
 *.[pP][rR][nN]
 *.[sS][lL][kK]
 *.socialcalc
@@ -17,6 +17,9 @@ tmp
 *.[fF][oO][dD][sS]
 *.[xX][mM][lL]
 *.[uU][oO][sS]
+*.[wW][kKqQbB][S1234567890]
+*.[qQ][pP][wW]
+*.123
 *.htm
 *.html
 *.sheetjs
diff --git a/.npmignore b/.npmignore
index 050a796..037ccfa 100644
--- a/.npmignore
+++ b/.npmignore
@@ -5,10 +5,12 @@ index.html
 misc/
 node_modules
 *.tgz
+_book
+book.json
 tmp
 *.txt
 *.[cC][sS][vV]
-*.[dD][iI][fF]
+*.[dD][iIbB][fF]
 *.[pP][rR][nN]
 *.[sS][lL][kK]
 *.socialcalc
@@ -18,6 +20,9 @@ tmp
 *.[fF][oO][dD][sS]
 *.[xX][mM][lL]
 *.[uU][oO][sS]
+*.[wW][kKqQbB][S1234567890]
+*.[qQ][pP][wW]
+*.123
 *.htm
 *.html
 *.sheetjs
@@ -39,5 +44,3 @@ test.js
 bits/
 docbits/
 tests/
-_book
-book.json
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 626060a..318457b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ changes may not be included if they are not expected to break existing code.
 
 ## Unreleased
 
+*
+
+## 0.9.9 (2017-04-03)
+
 * default output format changed to XLSB
 * comment text line endings are now normalized
 * errors thrown on write when worksheets have invalid names
diff --git a/README.md b/README.md
index 5d70ec8..8945b08 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@ with a unified JS representation, and ES3/ES5 browser compatibility back to IE6.
 
 [**Commercial Support**](http://sheetjs.com/reinforcements)
 
+[**Rendered Documentation**](https://sheetjs.gitbooks.io/docs/)
+
 [**File format support for known spreadsheet data formats:**](#file-formats)
 
 ![circo graph of format support](formats.png)
@@ -68,9 +70,12 @@ with a unified JS representation, and ES3/ES5 browser compatibility back to IE6.
   * [Excel 97-2004 Binary (BIFF8)](#excel-97-2004-binary-biff8)
   * [Excel 2003-2004 (SpreadsheetML)](#excel-2003-2004-spreadsheetml)
   * [Excel 2007+ Binary (XLSB, BIFF12)](#excel-2007-binary-xlsb-biff12)
-  * [OpenDocument Spreadsheet (ODS/FODS)](#opendocument-spreadsheet-odsfods)
-    + [Uniform Office Spreadsheet (UOS1/2)](#uniform-office-spreadsheet-uos12)
   * [Delimiter-Separated Values (CSV/TXT)](#delimiter-separated-values-csvtxt)
+  * [Other Workbook Formats](#other-workbook-formats)
+    + [Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)](#lotus-1-2-3-wkswk1wk2wk3wk4123)
+    + [Quattro Pro (WQ1/WQ2/WB1/WB2/WB3/QPW)](#quattro-pro-wq1wq2wb1wb2wb3qpw)
+    + [OpenDocument Spreadsheet (ODS/FODS)](#opendocument-spreadsheet-odsfods)
+    + [Uniform Office Spreadsheet (UOS1/2)](#uniform-office-spreadsheet-uos12)
   * [Other Single-Worksheet Formats](#other-single-worksheet-formats)
     + [dBASE and Visual FoxPro (DBF)](#dbase-and-visual-foxpro-dbf)
     + [Symbolic Link (SYLK)](#symbolic-link-sylk)
@@ -872,13 +877,14 @@ file but Excel will know how to handle it.  This library applies similar logic:
 
 | Byte 0 | Raw File Type | Spreadsheet Types                                   |
 |:-------|:--------------|:----------------------------------------------------|
-| `0xD0` | CFB Container | BIFF 5/8 or password-protected XLSX/XLSB            |
+| `0xD0` | CFB Container | BIFF 5/8 or password-protected XLSX/XLSB or WQ3/QPW |
 | `0x09` | BIFF Stream   | BIFF 2/3/4/5                                        |
 | `0x3C` | XML/HTML      | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 | `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      |
+| `0x00` | Record Stream | Lotus WK\* or Quattro Pro or 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)
@@ -1181,6 +1187,8 @@ Despite the library name `xlsx`, it supports numerous spreadsheet file formats:
 | Flat XML ODF Spreadsheet (FODS)                              |  :o:  |  :o:  |
 | Uniform Office Format Spreadsheet (标文通 UOS1/UOS2)         |  :o:  |       |
 | dBASE II/III/IV / Visual FoxPro (DBF)                        |  :o:  |       |
+| Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)                        |  :o:  |       |
+| Quattro Pro Spreadsheet (WQ1/WQ2/WB1/WB2/WB3/QPW)            |  :o:  |       |
 | **Other Common Spreadsheet Output Formats**                  |:-----:|:-----:|
 | HTML Tables                                                  |  :o:  |       |
 
@@ -1231,7 +1239,34 @@ in an XLSX sub-file can be mapped to XLSB records in a corresponding sub-file.
 The `MS-XLSB` specification covers the basics of the file format, and other
 specifications expand on serialization of features like properties.
 
-### OpenDocument Spreadsheet (ODS/FODS)
+### Delimiter-Separated Values (CSV/TXT)
+
+Excel CSV deviates from RFC4180 in a number of important ways.  The generated
+CSV files should generally work in Excel although they may not work in RFC4180
+compatible readers.  The parser should generally understand Excel CSV.
+
+Excel TXT uses tab as the delimiter and codepage 1200.
+
+### Other Workbook Formats
+
+Support for other formats is generally far XLS/XLSB/XLSX support, due in large
+part to a lack of publicly available documentation.  Test files were produced in
+the respective apps and compared to their XLS exports to determine structure.
+The main focus is data extraction.
+
+#### Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)
+
+The Lotus formats consist of binary records similar to the BIFF structure. Lotus
+did release a whitepaper decades ago covering the original WK1 format.  Other
+features were deduced by producing files and comparing to Excel support.
+
+#### Quattro Pro (WQ1/WQ2/WB1/WB2/WB3/QPW)
+
+The Quattro Pro formats use binary records in the same way as BIFF and Lotus.
+Some of the newer formats (namely WB3 and QPW) use a CFB enclosure just like
+BIFF8 XLS.
+
+#### OpenDocument Spreadsheet (ODS/FODS)
 
 ODS is an XML-in-ZIP format akin to XLSX while FODS is an XML format akin to
 SpreadsheetML.  Both are detailed in the OASIS standard, but tools like LO/OO
@@ -1243,14 +1278,6 @@ UOS is a very similar format, and it comes in 2 varieties corresponding to ODS
 and FODS respectively.  For the most part, the difference between the formats
 lies in the names of tags and attributes.
 
-### Delimiter-Separated Values (CSV/TXT)
-
-Excel CSV deviates from RFC4180 in a number of important ways.  The generated
-CSV files should generally work in Excel although they may not work in RFC4180
-compatible readers.  The parser should generally understand Excel CSV.
-
-Excel TXT uses tab as the delimiter and codepage 1200.
-
 ### Other Single-Worksheet Formats
 
 Many older formats supported only one worksheet:
diff --git a/bits/40_harb.js b/bits/40_harb.js
index b4a8bde..df5875e 100644
--- a/bits/40_harb.js
+++ b/bits/40_harb.js
@@ -412,11 +412,12 @@ var PRN = (function() {
 		if(str.substr(0,1024).indexOf("\t") == -1) sep = ","; else sep = "\t";
 		var R = 0, C = 0, v = 0;
 		var start = 0, end = 0, sepcc = sep.charCodeAt(0), instr = false, cc=0;
+		str = str.replace(/\r\n/g, "\n");
 		for(;end < str.length;++end) switch((cc=str.charCodeAt(end))) {
 			case 0x22: instr = !instr; break;
 			case sepcc: case 0x0a: if(instr) break;
 			var s = str.slice(start, end);
-			var cell = ({}/*:any*/)
+			var cell = ({}/*:any*/);
 			if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
@@ -426,7 +427,7 @@ var PRN = (function() {
 			start = end+1;
 			if(range.e.c < C) range.e.c = C;
 			if(range.e.r < R) range.e.r = R;
-			if(cc == sepcc) ++C; else { C = 0; ++R; }; break;
+			if(cc == sepcc) ++C; else { C = 0; ++R; } break;
 			default: break;
 		}
 
diff --git a/bits/41_lotus.js b/bits/41_lotus.js
new file mode 100644
index 0000000..a9349ff
--- /dev/null
+++ b/bits/41_lotus.js
@@ -0,0 +1,320 @@
+var WK_ = (function() {
+	function lotushopper(data, cb/*:RecordHopperCB*/, opts/*:any*/) {
+		if(!data) return;
+		prep_blob(data, data.l || 0);
+		var Enum = opts.Enum || WK1Enum;
+		while(data.l < data.length) {
+			var RT = data.read_shift(2);
+			var R = Enum[RT] || Enum[0xFF];
+			var length = data.read_shift(2);
+			var tgt = data.l + length;
+			var d = R.f(data, length, opts);
+			data.l = tgt;
+			if(cb(d, R, RT)) return;
+		}
+	}
+
+	function lotus_to_workbook(d/*:RawData*/, opts) {
+		switch(opts.type) {
+			case 'base64': return lotus_to_workbook_buf(s2a(Base64.decode(d)), opts);
+			case 'binary': return lotus_to_workbook_buf(s2a(d), opts);
+			case 'buffer':
+			case 'array': return lotus_to_workbook_buf(d, opts);
+		}
+		throw "Unsupported type " + opts.type;
+	}
+
+	function lotus_to_workbook_buf(d,opts)/*:Workbook*/ {
+		if(!d) return d;
+		var o = opts || {};
+
+		var s = {}, n = "Sheet1", sidx = 0;
+		var sheets = {}, snames = [n];
+
+		var refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+
+		if(d[2] == 0x02) o.Enum = WK1Enum;
+		else if(d[2] == 0x1a) o.Enum = WK3Enum;
+		else if(d[2] == 0x0e) { o.Enum = WK3Enum; o.qpro = true; d.l = 0; }
+		else throw new Error("Unrecognized LOTUS BOF " + d[2]);
+		lotushopper(d, function(val, R, RT) {
+			if(d[2] == 0x02) switch(RT) {
+				case 0x00:
+					o.vers = val;
+					if(val >= 0x1000) o.qpro = true;
+					break;
+				case 0x06: refguess = val; break; /* RANGE */
+				case 0x0F: /* LABEL */
+					if(!opts.qpro) val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x0D: /* INTEGER */
+				case 0x0E: /* NUMBER */
+				case 0x10: /* FORMULA */
+				case 0x33: /* STRING */
+					s[encode_cell(val[0])] = val[1];
+					/* TODO: FORMAT */
+					break;
+			} else switch(RT) {
+				case 0x16: /* LABEL16 */
+					val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x17: /* NUMBER17 */
+				case 0x18: /* NUMBER18 */
+				case 0x19: /* FORMULA19 */
+				case 0x25: /* NUMBER25 */
+				case 0x27: /* NUMBER27 */
+				case 0x28: /* FORMULA28 */
+					if(val[3] > sidx) {
+						s["!ref"] = encode_range(refguess);
+						sheets[n] = s;
+						s = {};
+						refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+						sidx = val[3]; n = "Sheet" + (sidx + 1);
+						snames.push(n);
+					}
+					s[encode_cell(val[0])] = val[1];
+					if(refguess.e.c < val[0].c) refguess.e.c = val[0].c;
+					if(refguess.e.r < val[0].r) refguess.e.r = val[0].r;
+					break;
+				default: break;
+			}
+		}, o);
+
+		s["!ref"] = encode_range(refguess);
+		sheets[n] = s;
+		return { SheetNames: snames, Sheets:sheets };
+	}
+
+	function parse_RANGE(blob, length) {
+		var o = {s:{c:0,r:0},e:{c:0,r:0}};
+		o.s.c = blob.read_shift(2);
+		o.s.r = blob.read_shift(2);
+		o.e.c = blob.read_shift(2);
+		o.e.r = blob.read_shift(2);
+		if(o.s.c == 0xFFFF) o.s.c = o.e.c = o.s.r = o.e.r = 0;
+		return o;
+	}
+
+	function parse_cell(blob, length, opts) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		if(opts.qpro && opts.vers != 0x5120) {
+			o[0].c = blob.read_shift(1);
+			blob.l++;
+			o[0].r = blob.read_shift(2);
+			blob.l+=2;
+		} else {
+			o[2] = blob.read_shift(1);
+			o[0].c = blob.read_shift(2); o[0].r = blob.read_shift(2);
+		}
+		return o;
+	}
+
+	function parse_LABEL(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		o[1].t = 's';
+		if(opts.vers == 0x5120) {
+			blob.l++;
+			var len = blob.read_shift(1);
+			o[1].v = blob.read_shift(len, 'utf8');
+			return o;
+		}
+		if(opts.qpro) blob.l++;
+		o[1].v = blob.read_shift(tgt - blob.l, 'cstr');
+		return o;
+	}
+
+	function parse_INTEGER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(2, 'i');
+		return o;
+	}
+
+	function parse_NUMBER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(8, 'f');
+		return o;
+	}
+
+	function parse_FORMULA(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		/* TODO: formula */
+		o[1].v = blob.read_shift(8, 'f');
+		if(opts.qpro) blob.l = tgt;
+		else {
+			var flen = blob.read_shift(2);
+			blob.l += flen;
+		}
+		return o;
+	}
+
+	function parse_cell_3(blob, length) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		o[0].r = blob.read_shift(2); o[3] = blob[blob.l++]; o[0].c = blob[blob.l++];
+		return o;
+	}
+
+	function parse_LABEL_16(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].t = 's';
+		o[1].v = blob.read_shift(length - 4, 'cstr');
+		return o;
+	}
+
+	function parse_NUMBER_18(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].v = blob.read_shift(2);
+		var v = o[1].v >> 1;
+		/* TODO: figure out all of the corner cases */
+		if(o[1].v & 0x1) {
+			switch(v & 0x07) {
+				case 1: v = (v >> 3) * 500; break;
+				case 2: v = (v >> 3) / 20; break;
+				case 4: v = (v >> 3) / 2000; break;
+				case 6: v = (v >> 3) / 16; break;
+				case 7: v = (v >> 3) / 64; break;
+				default: throw "unknown NUMBER_18 encoding " + (v & 0x07);
+			}
+		}
+		o[1].v = v;
+		return o;
+	}
+
+	function parse_NUMBER_17(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		var v2 = blob.read_shift(4);
+		var e = blob.read_shift(2);
+		if(e == 0xFFFF) { o[1].v = 0; return o; }
+		var s = e & 0x8000; e = (e&0x7FFF) - 16446;
+		o[1].v = ((e > 0 ? (v2 << e) : (v2 >>> -e)) + (e > -32 ? (v1 << (e + 32)) : (v1 >>> -(e + 32))));
+		return o;
+	}
+
+	function parse_FORMULA_19(blob, length) {
+		var o = parse_NUMBER_17(blob, 14);
+		blob.l += length - 14; /* TODO: formula */
+		return o;
+	}
+
+	function parse_NUMBER_25(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		o[1].v = v1 >> 6;
+		return o;
+	}
+
+	function parse_NUMBER_27(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(8,'f');
+		o[1].v = v1;
+		return o;
+	}
+
+	function parse_FORMULA_28(blob, length) {
+		var o = parse_NUMBER_27(blob, 14);
+		blob.l += length - 10; /* TODO: formula */
+		return o;
+	}
+
+	var WK1Enum = {
+		/*::[*/0x0000/*::]*/: { n:"BOF", f:parseuint16 },
+		/*::[*/0x0001/*::]*/: { n:"EOF", f:parsenoop },
+		/*::[*/0x0002/*::]*/: { n: "CALCMODE", f:parsenoop },
+		/*::[*/0x0003/*::]*/: { n:"CALCORDER", f:parsenoop },
+		/*::[*/0x0004/*::]*/: { n:"SPLIT", f:parsenoop },
+		/*::[*/0x0005/*::]*/: { n:"SYNC", f:parsenoop },
+		/*::[*/0x0006/*::]*/: { n:"RANGE", f:parse_RANGE },
+		/*::[*/0x0007/*::]*/: { n:"WINDOW1", f:parsenoop },
+		/*::[*/0x0008/*::]*/: { n:"COLW1", f:parsenoop },
+		/*::[*/0x0009/*::]*/: { n:"WINTWO", f:parsenoop },
+		/*::[*/0x000A/*::]*/: { n:"COLW2", f:parsenoop },
+		/*::[*/0x000B/*::]*/: { n:"NAME", f:parsenoop },
+		/*::[*/0x000C/*::]*/: { n:"BLANK", f:parsenoop },
+		/*::[*/0x000D/*::]*/: { n:"INTEGER", f:parse_INTEGER },
+		/*::[*/0x000E/*::]*/: { n:"NUMBER", f:parse_NUMBER },
+		/*::[*/0x000F/*::]*/: { n:"LABEL", f:parse_LABEL },
+		/*::[*/0x0010/*::]*/: { n:"FORMULA", f:parse_FORMULA },
+		/*::[*/0x0018/*::]*/: { n:"TABLE", f:parsenoop },
+		/*::[*/0x0019/*::]*/: { n:"ORANGE", f:parsenoop },
+		/*::[*/0x001A/*::]*/: { n:"PRANGE", f:parsenoop },
+		/*::[*/0x001B/*::]*/: { n:"SRANGE", f:parsenoop },
+		/*::[*/0x001C/*::]*/: { n:"FRANGE", f:parsenoop },
+		/*::[*/0x001D/*::]*/: { n:"KRANGE1", f:parsenoop },
+		/*::[*/0x0020/*::]*/: { n:"HRANGE", f:parsenoop },
+		/*::[*/0x0023/*::]*/: { n:"KRANGE2", f:parsenoop },
+		/*::[*/0x0024/*::]*/: { n:"PROTEC", f:parsenoop },
+		/*::[*/0x0025/*::]*/: { n:"FOOTER", f:parsenoop },
+		/*::[*/0x0026/*::]*/: { n:"HEADER", f:parsenoop },
+		/*::[*/0x0027/*::]*/: { n:"SETUP", f:parsenoop },
+		/*::[*/0x0028/*::]*/: { n:"MARGINS", f:parsenoop },
+		/*::[*/0x0029/*::]*/: { n:"LABELFMT", f:parsenoop },
+		/*::[*/0x002A/*::]*/: { n:"TITLES", f:parsenoop },
+		/*::[*/0x002B/*::]*/: { n:"SHEETJS", f:parsenoop },
+		/*::[*/0x002D/*::]*/: { n:"GRAPH", f:parsenoop },
+		/*::[*/0x002E/*::]*/: { n:"NGRAPH", f:parsenoop },
+		/*::[*/0x002F/*::]*/: { n:"CALCCOUNT", f:parsenoop },
+		/*::[*/0x0030/*::]*/: { n:"UNFORMATTED", f:parsenoop },
+		/*::[*/0x0031/*::]*/: { n:"CURSORW12", f:parsenoop },
+		/*::[*/0x0032/*::]*/: { n:"WINDOW", f:parsenoop },
+		/*::[*/0x0033/*::]*/: { n:"STRING", f:parse_LABEL },
+		/*::[*/0x0037/*::]*/: { n:"PASSWORD", f:parsenoop },
+		/*::[*/0x0038/*::]*/: { n:"LOCKED", f:parsenoop },
+		/*::[*/0x003C/*::]*/: { n:"QUERY", f:parsenoop },
+		/*::[*/0x003D/*::]*/: { n:"QUERYNAME", f:parsenoop },
+		/*::[*/0x003E/*::]*/: { n:"PRINT", f:parsenoop },
+		/*::[*/0x003F/*::]*/: { n:"PRINTNAME", f:parsenoop },
+		/*::[*/0x0040/*::]*/: { n:"GRAPH2", f:parsenoop },
+		/*::[*/0x0041/*::]*/: { n:"GRAPHNAME", f:parsenoop },
+		/*::[*/0x0042/*::]*/: { n:"ZOOM", f:parsenoop },
+		/*::[*/0x0043/*::]*/: { n:"SYMSPLIT", f:parsenoop },
+		/*::[*/0x0044/*::]*/: { n:"NSROWS", f:parsenoop },
+		/*::[*/0x0045/*::]*/: { n:"NSCOLS", f:parsenoop },
+		/*::[*/0x0046/*::]*/: { n:"RULER", f:parsenoop },
+		/*::[*/0x0047/*::]*/: { n:"NNAME", f:parsenoop },
+		/*::[*/0x0048/*::]*/: { n:"ACOMM", f:parsenoop },
+		/*::[*/0x0049/*::]*/: { n:"AMACRO", f:parsenoop },
+		/*::[*/0x004A/*::]*/: { n:"PARSE", f:parsenoop },
+		/*::[*/0x00FF/*::]*/: { n:"", f:parsenoop }
+	};
+
+	var WK3Enum = {
+		/*::[*/0x0000/*::]*/: { n:"BOF", f:parsenoop },
+		/*::[*/0x0001/*::]*/: { n:"EOF", f:parsenoop },
+		/*::[*/0x0003/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0004/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0005/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0006/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0007/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0009/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000a/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000b/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000c/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000e/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000f/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0010/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0011/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0012/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0013/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0015/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0016/*::]*/: { n:"LABEL16", f:parse_LABEL_16},
+		/*::[*/0x0017/*::]*/: { n:"NUMBER17", f:parse_NUMBER_17 },
+		/*::[*/0x0018/*::]*/: { n:"NUMBER18", f:parse_NUMBER_18 },
+		/*::[*/0x0019/*::]*/: { n:"FORMULA19", f:parse_FORMULA_19},
+		/*::[*/0x001a/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001b/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001c/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001d/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001e/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001f/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0021/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0025/*::]*/: { n:"NUMBER25", f:parse_NUMBER_25 },
+		/*::[*/0x0027/*::]*/: { n:"NUMBER27", f:parse_NUMBER_27 },
+		/*::[*/0x0028/*::]*/: { n:"FORMULA28", f:parse_FORMULA_28 },
+		/*::[*/0x00FF/*::]*/: { n:"", f:parsenoop }
+	};
+	return {
+		to_workbook: lotus_to_workbook
+	};
+})();
diff --git a/bits/76_xls.js b/bits/76_xls.js
index f766967..b100462 100644
--- a/bits/76_xls.js
+++ b/bits/76_xls.js
@@ -734,6 +734,10 @@ if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
 	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	/* Quattro Pro 7-8 */
+	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	/* Quattro Pro 9 */
+	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
diff --git a/bits/77_parsetab.js b/bits/77_parsetab.js
index 072dbba..c410a58 100644
--- a/bits/77_parsetab.js
+++ b/bits/77_parsetab.js
@@ -1236,7 +1236,7 @@ var XLSRecordEnum = {
 	/*::[*/0x08c5/*::]*/: { n:"ListCF", f:parsenoop },
 	/*::[*/0x08c6/*::]*/: { n:"FMQry", f:parsenoop },
 	/*::[*/0x08c7/*::]*/: { n:"FMSQry", f:parsenoop },
-	/*::[*/0x08c8/*::]*/: { n:"PLV", f:parsenoop }, /* supposedly PLV for Excel 11 */
+	/*::[*/0x08c8/*::]*/: { n:"PLV", f:parsenoop },
 	/*::[*/0x08c9/*::]*/: { n:"LnExt", f:parsenoop },
 	/*::[*/0x08ca/*::]*/: { n:"MkrExt", f:parsenoop },
 	/*::[*/0x08cb/*::]*/: { n:"CrtCoopt", f:parsenoop },
diff --git a/bits/79_html.js b/bits/79_html.js
index c878d96..4c4a43c 100644
--- a/bits/79_html.js
+++ b/bits/79_html.js
@@ -55,6 +55,7 @@ function parse_dom_table(table/*:HTMLElement*/, opts/*:?any*/)/*:Worksheet*/ {
 			var o = {t:'s', v:v};
 			if(v != null && v.length && !isNaN(Number(v))) o = {t:'n', v:Number(v)};
 			ws[encode_cell({c:C, r:R})] = o;
+			if(range.e.c < C) range.e.c = C;
 			C += CS;
 		}
 	}
diff --git a/bits/87_read.js b/bits/87_read.js
index 611cd91..b323921 100644
--- a/bits/87_read.js
+++ b/bits/87_read.js
@@ -47,6 +47,7 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 		case 0x50: if(n[1] == 0x4B && n[2] < 0x20 && n[3] < 0x20) return read_zip(d, o); break;
 		case 0xEF: return parse_xlml(d, o);
 		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);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);
diff --git a/docbits/00_intro.md b/docbits/00_intro.md
index c5d23f5..db9cb64 100644
--- a/docbits/00_intro.md
+++ b/docbits/00_intro.md
@@ -11,6 +11,8 @@ with a unified JS representation, and ES3/ES5 browser compatibility back to IE6.
 
 [**Commercial Support**](http://sheetjs.com/reinforcements)
 
+[**Rendered Documentation**](https://sheetjs.gitbooks.io/docs/)
+
 [**File format support for known spreadsheet data formats:**](#file-formats)
 
 ![circo graph of format support](formats.png)
diff --git a/docbits/80_parseopts.md b/docbits/80_parseopts.md
index a9918f5..2d7890b 100644
--- a/docbits/80_parseopts.md
+++ b/docbits/80_parseopts.md
@@ -61,13 +61,14 @@ file but Excel will know how to handle it.  This library applies similar logic:
 
 | Byte 0 | Raw File Type | Spreadsheet Types                                   |
 |:-------|:--------------|:----------------------------------------------------|
-| `0xD0` | CFB Container | BIFF 5/8 or password-protected XLSX/XLSB            |
+| `0xD0` | CFB Container | BIFF 5/8 or password-protected XLSX/XLSB or WQ3/QPW |
 | `0x09` | BIFF Stream   | BIFF 2/3/4/5                                        |
 | `0x3C` | XML/HTML      | SpreadsheetML / Flat ODS / UOS1 / HTML / plaintext  |
 | `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      |
+| `0x00` | Record Stream | Lotus WK\* or Quattro Pro or 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)
diff --git a/docbits/85_filetype.md b/docbits/85_filetype.md
index fb6bba3..9cf5bc3 100644
--- a/docbits/85_filetype.md
+++ b/docbits/85_filetype.md
@@ -24,6 +24,8 @@ Despite the library name `xlsx`, it supports numerous spreadsheet file formats:
 | Flat XML ODF Spreadsheet (FODS)                              |  :o:  |  :o:  |
 | Uniform Office Format Spreadsheet (标文通 UOS1/UOS2)         |  :o:  |       |
 | dBASE II/III/IV / Visual FoxPro (DBF)                        |  :o:  |       |
+| Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)                        |  :o:  |       |
+| Quattro Pro Spreadsheet (WQ1/WQ2/WB1/WB2/WB3/QPW)            |  :o:  |       |
 | **Other Common Spreadsheet Output Formats**                  |:-----:|:-----:|
 | HTML Tables                                                  |  :o:  |       |
 
@@ -74,7 +76,34 @@ in an XLSX sub-file can be mapped to XLSB records in a corresponding sub-file.
 The `MS-XLSB` specification covers the basics of the file format, and other
 specifications expand on serialization of features like properties.
 
-### OpenDocument Spreadsheet (ODS/FODS)
+### Delimiter-Separated Values (CSV/TXT)
+
+Excel CSV deviates from RFC4180 in a number of important ways.  The generated
+CSV files should generally work in Excel although they may not work in RFC4180
+compatible readers.  The parser should generally understand Excel CSV.
+
+Excel TXT uses tab as the delimiter and codepage 1200.
+
+### Other Workbook Formats
+
+Support for other formats is generally far XLS/XLSB/XLSX support, due in large
+part to a lack of publicly available documentation.  Test files were produced in
+the respective apps and compared to their XLS exports to determine structure.
+The main focus is data extraction.
+
+#### Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)
+
+The Lotus formats consist of binary records similar to the BIFF structure. Lotus
+did release a whitepaper decades ago covering the original WK1 format.  Other
+features were deduced by producing files and comparing to Excel support.
+
+#### Quattro Pro (WQ1/WQ2/WB1/WB2/WB3/QPW)
+
+The Quattro Pro formats use binary records in the same way as BIFF and Lotus.
+Some of the newer formats (namely WB3 and QPW) use a CFB enclosure just like
+BIFF8 XLS.
+
+#### OpenDocument Spreadsheet (ODS/FODS)
 
 ODS is an XML-in-ZIP format akin to XLSX while FODS is an XML format akin to
 SpreadsheetML.  Both are detailed in the OASIS standard, but tools like LO/OO
@@ -86,14 +115,6 @@ UOS is a very similar format, and it comes in 2 varieties corresponding to ODS
 and FODS respectively.  For the most part, the difference between the formats
 lies in the names of tags and attributes.
 
-### Delimiter-Separated Values (CSV/TXT)
-
-Excel CSV deviates from RFC4180 in a number of important ways.  The generated
-CSV files should generally work in Excel although they may not work in RFC4180
-compatible readers.  The parser should generally understand Excel CSV.
-
-Excel TXT uses tab as the delimiter and codepage 1200.
-
 ### Other Single-Worksheet Formats
 
 Many older formats supported only one worksheet:
diff --git a/formats.dot b/formats.dot
index b387889..4dc7566 100644
--- a/formats.dot
+++ b/formats.dot
@@ -25,6 +25,10 @@ digraph G {
 		dif   [label="DIF"];
 		slk   [label="SYLK"];
 		prn   [label="PRN"];
+		wk1   [label="WK1/2\n123"];
+		wk3   [label="WK3/4"];
+		wqb   [label="WQ*\nWB*"];
+		qpw   [label="QPW"];
 	}
 
 	subgraph WORKBOOK {
@@ -42,6 +46,8 @@ digraph G {
 		fods -> csf
 		csf -> fods
 		uos -> csf
+		wk3 -> csf
+		qpw -> csf
 	}
 	subgraph WORKSHEET {
 		edge [color=aquamarine4];
@@ -52,6 +58,8 @@ digraph G {
 		csf -> slk
 		slk -> csf
 		csf -> dif
+		wk1 -> csf
+		wqb -> csf
 		dif -> csf
 		prn -> csf
 		csf -> prn
diff --git a/formats.png b/formats.png
index 1ca3215..145c98e 100644
Binary files a/formats.png and b/formats.png differ
diff --git a/misc/docs/SUMMARY.md b/misc/docs/SUMMARY.md
index 8ff8bef..fd322af 100644
--- a/misc/docs/SUMMARY.md
+++ b/misc/docs/SUMMARY.md
@@ -47,9 +47,12 @@
   * [Excel 97-2004 Binary (BIFF8)](README.md#excel-97-2004-binary-biff8)
   * [Excel 2003-2004 (SpreadsheetML)](README.md#excel-2003-2004-spreadsheetml)
   * [Excel 2007+ Binary (XLSB, BIFF12)](README.md#excel-2007-binary-xlsb-biff12)
-  * [OpenDocument Spreadsheet (ODS/FODS)](README.md#opendocument-spreadsheet-odsfods)
-    + [Uniform Office Spreadsheet (UOS1/2)](README.md#uniform-office-spreadsheet-uos12)
   * [Delimiter-Separated Values (CSV/TXT)](README.md#delimiter-separated-values-csvtxt)
+  * [Other Workbook Formats](README.md#other-workbook-formats)
+    + [Lotus 1-2-3 (WKS/WK1/WK2/WK3/WK4/123)](README.md#lotus-1-2-3-wkswk1wk2wk3wk4123)
+    + [Quattro Pro (WQ1/WQ2/WB1/WB2/WB3/QPW)](README.md#quattro-pro-wq1wq2wb1wb2wb3qpw)
+    + [OpenDocument Spreadsheet (ODS/FODS)](README.md#opendocument-spreadsheet-odsfods)
+    + [Uniform Office Spreadsheet (UOS1/2)](README.md#uniform-office-spreadsheet-uos12)
   * [Other Single-Worksheet Formats](README.md#other-single-worksheet-formats)
     + [dBASE and Visual FoxPro (DBF)](README.md#dbase-and-visual-foxpro-dbf)
     + [Symbolic Link (SYLK)](README.md#symbolic-link-sylk)
diff --git a/tests/write.js b/tests/write.js
index c40c416..d8ea1d5 100644
--- a/tests/write.js
+++ b/tests/write.js
@@ -117,6 +117,7 @@ XLSX.writeFile(wb, 'sheetjs.slk');
 XLSX.writeFile(wb, 'sheetjs.csv');
 XLSX.writeFile(wb, 'sheetjs.txt');
 XLSX.writeFile(wb, 'sheetjs.prn');
+XLSX.writeFile(wb, 'sheetjs.dif');
 
 /* test by reading back files */
 XLSX.readFile('sheetjs.xlsx');
@@ -127,6 +128,7 @@ XLSX.readFile('sheetjs.xml.xls');
 XLSX.readFile('sheetjs.ods');
 XLSX.readFile('sheetjs.fods');
 XLSX.readFile('sheetjs.slk');
-//XLSX.readFile('sheetjs.csv');
-//XLSX.readFile('sheetjs.txt');
+XLSX.readFile('sheetjs.csv');
+XLSX.readFile('sheetjs.txt');
 XLSX.readFile('sheetjs.prn');
+XLSX.readFile('sheetjs.dif');
diff --git a/xlsx.flow.js b/xlsx.flow.js
index 8955c96..1c18093 100644
--- a/xlsx.flow.js
+++ b/xlsx.flow.js
@@ -5172,11 +5172,12 @@ var PRN = (function() {
 		if(str.substr(0,1024).indexOf("\t") == -1) sep = ","; else sep = "\t";
 		var R = 0, C = 0, v = 0;
 		var start = 0, end = 0, sepcc = sep.charCodeAt(0), instr = false, cc=0;
+		str = str.replace(/\r\n/g, "\n");
 		for(;end < str.length;++end) switch((cc=str.charCodeAt(end))) {
 			case 0x22: instr = !instr; break;
 			case sepcc: case 0x0a: if(instr) break;
 			var s = str.slice(start, end);
-			var cell = ({}/*:any*/)
+			var cell = ({}/*:any*/);
 			if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
@@ -5186,7 +5187,7 @@ var PRN = (function() {
 			start = end+1;
 			if(range.e.c < C) range.e.c = C;
 			if(range.e.r < R) range.e.r = R;
-			if(cc == sepcc) ++C; else { C = 0; ++R; }; break;
+			if(cc == sepcc) ++C; else { C = 0; ++R; } break;
 			default: break;
 		}
 
@@ -5236,6 +5237,326 @@ var PRN = (function() {
 	};
 })();
 
+var WK_ = (function() {
+	function lotushopper(data, cb/*:RecordHopperCB*/, opts/*:any*/) {
+		if(!data) return;
+		prep_blob(data, data.l || 0);
+		var Enum = opts.Enum || WK1Enum;
+		while(data.l < data.length) {
+			var RT = data.read_shift(2);
+			var R = Enum[RT] || Enum[0xFF];
+			var length = data.read_shift(2);
+			var tgt = data.l + length;
+			var d = R.f(data, length, opts);
+			data.l = tgt;
+			if(cb(d, R, RT)) return;
+		}
+	}
+
+	function lotus_to_workbook(d/*:RawData*/, opts) {
+		switch(opts.type) {
+			case 'base64': return lotus_to_workbook_buf(s2a(Base64.decode(d)), opts);
+			case 'binary': return lotus_to_workbook_buf(s2a(d), opts);
+			case 'buffer':
+			case 'array': return lotus_to_workbook_buf(d, opts);
+		}
+		throw "Unsupported type " + opts.type;
+	}
+
+	function lotus_to_workbook_buf(d,opts)/*:Workbook*/ {
+		if(!d) return d;
+		var o = opts || {};
+
+		var s = {}, n = "Sheet1", sidx = 0;
+		var sheets = {}, snames = [n];
+
+		var refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+
+		if(d[2] == 0x02) o.Enum = WK1Enum;
+		else if(d[2] == 0x1a) o.Enum = WK3Enum;
+		else if(d[2] == 0x0e) { o.Enum = WK3Enum; o.qpro = true; d.l = 0; }
+		else throw new Error("Unrecognized LOTUS BOF " + d[2]);
+		lotushopper(d, function(val, R, RT) {
+			if(d[2] == 0x02) switch(RT) {
+				case 0x00:
+					o.vers = val;
+					if(val >= 0x1000) o.qpro = true;
+					break;
+				case 0x06: refguess = val; break; /* RANGE */
+				case 0x0F: /* LABEL */
+					if(!opts.qpro) val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x0D: /* INTEGER */
+				case 0x0E: /* NUMBER */
+				case 0x10: /* FORMULA */
+				case 0x33: /* STRING */
+					s[encode_cell(val[0])] = val[1];
+					/* TODO: FORMAT */
+					break;
+			} else switch(RT) {
+				case 0x16: /* LABEL16 */
+					val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x17: /* NUMBER17 */
+				case 0x18: /* NUMBER18 */
+				case 0x19: /* FORMULA19 */
+				case 0x25: /* NUMBER25 */
+				case 0x27: /* NUMBER27 */
+				case 0x28: /* FORMULA28 */
+					if(val[3] > sidx) {
+						s["!ref"] = encode_range(refguess);
+						sheets[n] = s;
+						s = {};
+						refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+						sidx = val[3]; n = "Sheet" + (sidx + 1);
+						snames.push(n);
+					}
+					s[encode_cell(val[0])] = val[1];
+					if(refguess.e.c < val[0].c) refguess.e.c = val[0].c;
+					if(refguess.e.r < val[0].r) refguess.e.r = val[0].r;
+					break;
+				default: break;
+			}
+		}, o);
+
+		s["!ref"] = encode_range(refguess);
+		sheets[n] = s;
+		return { SheetNames: snames, Sheets:sheets };
+	}
+
+	function parse_RANGE(blob, length) {
+		var o = {s:{c:0,r:0},e:{c:0,r:0}};
+		o.s.c = blob.read_shift(2);
+		o.s.r = blob.read_shift(2);
+		o.e.c = blob.read_shift(2);
+		o.e.r = blob.read_shift(2);
+		if(o.s.c == 0xFFFF) o.s.c = o.e.c = o.s.r = o.e.r = 0;
+		return o;
+	}
+
+	function parse_cell(blob, length, opts) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		if(opts.qpro && opts.vers != 0x5120) {
+			o[0].c = blob.read_shift(1);
+			blob.l++;
+			o[0].r = blob.read_shift(2);
+			blob.l+=2;
+		} else {
+			o[2] = blob.read_shift(1);
+			o[0].c = blob.read_shift(2); o[0].r = blob.read_shift(2);
+		}
+		return o;
+	}
+
+	function parse_LABEL(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		o[1].t = 's';
+		if(opts.vers == 0x5120) {
+			blob.l++;
+			var len = blob.read_shift(1);
+			o[1].v = blob.read_shift(len, 'utf8');
+			return o;
+		}
+		if(opts.qpro) blob.l++;
+		o[1].v = blob.read_shift(tgt - blob.l, 'cstr');
+		return o;
+	}
+
+	function parse_INTEGER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(2, 'i');
+		return o;
+	}
+
+	function parse_NUMBER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(8, 'f');
+		return o;
+	}
+
+	function parse_FORMULA(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		/* TODO: formula */
+		o[1].v = blob.read_shift(8, 'f');
+		if(opts.qpro) blob.l = tgt;
+		else {
+			var flen = blob.read_shift(2);
+			blob.l += flen;
+		}
+		return o;
+	}
+
+	function parse_cell_3(blob, length) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		o[0].r = blob.read_shift(2); o[3] = blob[blob.l++]; o[0].c = blob[blob.l++];
+		return o;
+	}
+
+	function parse_LABEL_16(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].t = 's';
+		o[1].v = blob.read_shift(length - 4, 'cstr');
+		return o;
+	}
+
+	function parse_NUMBER_18(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].v = blob.read_shift(2);
+		var v = o[1].v >> 1;
+		/* TODO: figure out all of the corner cases */
+		if(o[1].v & 0x1) {
+			switch(v & 0x07) {
+				case 1: v = (v >> 3) * 500; break;
+				case 2: v = (v >> 3) / 20; break;
+				case 4: v = (v >> 3) / 2000; break;
+				case 6: v = (v >> 3) / 16; break;
+				case 7: v = (v >> 3) / 64; break;
+				default: throw "unknown NUMBER_18 encoding " + (v & 0x07);
+			}
+		}
+		o[1].v = v;
+		return o;
+	}
+
+	function parse_NUMBER_17(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		var v2 = blob.read_shift(4);
+		var e = blob.read_shift(2);
+		if(e == 0xFFFF) { o[1].v = 0; return o; }
+		var s = e & 0x8000; e = (e&0x7FFF) - 16446;
+		o[1].v = ((e > 0 ? (v2 << e) : (v2 >>> -e)) + (e > -32 ? (v1 << (e + 32)) : (v1 >>> -(e + 32))));
+		return o;
+	}
+
+	function parse_FORMULA_19(blob, length) {
+		var o = parse_NUMBER_17(blob, 14);
+		blob.l += length - 14; /* TODO: formula */
+		return o;
+	}
+
+	function parse_NUMBER_25(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		o[1].v = v1 >> 6;
+		return o;
+	}
+
+	function parse_NUMBER_27(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(8,'f');
+		o[1].v = v1;
+		return o;
+	}
+
+	function parse_FORMULA_28(blob, length) {
+		var o = parse_NUMBER_27(blob, 14);
+		blob.l += length - 10; /* TODO: formula */
+		return o;
+	}
+
+	var WK1Enum = {
+		/*::[*/0x0000/*::]*/: { n:"BOF", f:parseuint16 },
+		/*::[*/0x0001/*::]*/: { n:"EOF", f:parsenoop },
+		/*::[*/0x0002/*::]*/: { n: "CALCMODE", f:parsenoop },
+		/*::[*/0x0003/*::]*/: { n:"CALCORDER", f:parsenoop },
+		/*::[*/0x0004/*::]*/: { n:"SPLIT", f:parsenoop },
+		/*::[*/0x0005/*::]*/: { n:"SYNC", f:parsenoop },
+		/*::[*/0x0006/*::]*/: { n:"RANGE", f:parse_RANGE },
+		/*::[*/0x0007/*::]*/: { n:"WINDOW1", f:parsenoop },
+		/*::[*/0x0008/*::]*/: { n:"COLW1", f:parsenoop },
+		/*::[*/0x0009/*::]*/: { n:"WINTWO", f:parsenoop },
+		/*::[*/0x000A/*::]*/: { n:"COLW2", f:parsenoop },
+		/*::[*/0x000B/*::]*/: { n:"NAME", f:parsenoop },
+		/*::[*/0x000C/*::]*/: { n:"BLANK", f:parsenoop },
+		/*::[*/0x000D/*::]*/: { n:"INTEGER", f:parse_INTEGER },
+		/*::[*/0x000E/*::]*/: { n:"NUMBER", f:parse_NUMBER },
+		/*::[*/0x000F/*::]*/: { n:"LABEL", f:parse_LABEL },
+		/*::[*/0x0010/*::]*/: { n:"FORMULA", f:parse_FORMULA },
+		/*::[*/0x0018/*::]*/: { n:"TABLE", f:parsenoop },
+		/*::[*/0x0019/*::]*/: { n:"ORANGE", f:parsenoop },
+		/*::[*/0x001A/*::]*/: { n:"PRANGE", f:parsenoop },
+		/*::[*/0x001B/*::]*/: { n:"SRANGE", f:parsenoop },
+		/*::[*/0x001C/*::]*/: { n:"FRANGE", f:parsenoop },
+		/*::[*/0x001D/*::]*/: { n:"KRANGE1", f:parsenoop },
+		/*::[*/0x0020/*::]*/: { n:"HRANGE", f:parsenoop },
+		/*::[*/0x0023/*::]*/: { n:"KRANGE2", f:parsenoop },
+		/*::[*/0x0024/*::]*/: { n:"PROTEC", f:parsenoop },
+		/*::[*/0x0025/*::]*/: { n:"FOOTER", f:parsenoop },
+		/*::[*/0x0026/*::]*/: { n:"HEADER", f:parsenoop },
+		/*::[*/0x0027/*::]*/: { n:"SETUP", f:parsenoop },
+		/*::[*/0x0028/*::]*/: { n:"MARGINS", f:parsenoop },
+		/*::[*/0x0029/*::]*/: { n:"LABELFMT", f:parsenoop },
+		/*::[*/0x002A/*::]*/: { n:"TITLES", f:parsenoop },
+		/*::[*/0x002B/*::]*/: { n:"SHEETJS", f:parsenoop },
+		/*::[*/0x002D/*::]*/: { n:"GRAPH", f:parsenoop },
+		/*::[*/0x002E/*::]*/: { n:"NGRAPH", f:parsenoop },
+		/*::[*/0x002F/*::]*/: { n:"CALCCOUNT", f:parsenoop },
+		/*::[*/0x0030/*::]*/: { n:"UNFORMATTED", f:parsenoop },
+		/*::[*/0x0031/*::]*/: { n:"CURSORW12", f:parsenoop },
+		/*::[*/0x0032/*::]*/: { n:"WINDOW", f:parsenoop },
+		/*::[*/0x0033/*::]*/: { n:"STRING", f:parse_LABEL },
+		/*::[*/0x0037/*::]*/: { n:"PASSWORD", f:parsenoop },
+		/*::[*/0x0038/*::]*/: { n:"LOCKED", f:parsenoop },
+		/*::[*/0x003C/*::]*/: { n:"QUERY", f:parsenoop },
+		/*::[*/0x003D/*::]*/: { n:"QUERYNAME", f:parsenoop },
+		/*::[*/0x003E/*::]*/: { n:"PRINT", f:parsenoop },
+		/*::[*/0x003F/*::]*/: { n:"PRINTNAME", f:parsenoop },
+		/*::[*/0x0040/*::]*/: { n:"GRAPH2", f:parsenoop },
+		/*::[*/0x0041/*::]*/: { n:"GRAPHNAME", f:parsenoop },
+		/*::[*/0x0042/*::]*/: { n:"ZOOM", f:parsenoop },
+		/*::[*/0x0043/*::]*/: { n:"SYMSPLIT", f:parsenoop },
+		/*::[*/0x0044/*::]*/: { n:"NSROWS", f:parsenoop },
+		/*::[*/0x0045/*::]*/: { n:"NSCOLS", f:parsenoop },
+		/*::[*/0x0046/*::]*/: { n:"RULER", f:parsenoop },
+		/*::[*/0x0047/*::]*/: { n:"NNAME", f:parsenoop },
+		/*::[*/0x0048/*::]*/: { n:"ACOMM", f:parsenoop },
+		/*::[*/0x0049/*::]*/: { n:"AMACRO", f:parsenoop },
+		/*::[*/0x004A/*::]*/: { n:"PARSE", f:parsenoop },
+		/*::[*/0x00FF/*::]*/: { n:"", f:parsenoop }
+	};
+
+	var WK3Enum = {
+		/*::[*/0x0000/*::]*/: { n:"BOF", f:parsenoop },
+		/*::[*/0x0001/*::]*/: { n:"EOF", f:parsenoop },
+		/*::[*/0x0003/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0004/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0005/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0006/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0007/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0009/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000a/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000b/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000c/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000e/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x000f/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0010/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0011/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0012/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0013/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0015/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0016/*::]*/: { n:"LABEL16", f:parse_LABEL_16},
+		/*::[*/0x0017/*::]*/: { n:"NUMBER17", f:parse_NUMBER_17 },
+		/*::[*/0x0018/*::]*/: { n:"NUMBER18", f:parse_NUMBER_18 },
+		/*::[*/0x0019/*::]*/: { n:"FORMULA19", f:parse_FORMULA_19},
+		/*::[*/0x001a/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001b/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001c/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001d/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001e/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x001f/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0021/*::]*/: { n:"??", f:parsenoop },
+		/*::[*/0x0025/*::]*/: { n:"NUMBER25", f:parse_NUMBER_25 },
+		/*::[*/0x0027/*::]*/: { n:"NUMBER27", f:parse_NUMBER_27 },
+		/*::[*/0x0028/*::]*/: { n:"FORMULA28", f:parse_FORMULA_28 },
+		/*::[*/0x00FF/*::]*/: { n:"", f:parsenoop }
+	};
+	return {
+		to_workbook: lotus_to_workbook
+	};
+})();
 /* 18.4.1 charset to codepage mapping */
 var CS2CP = ({
 	/*::[*/0/*::]*/:    1252, /* ANSI */
@@ -12750,6 +13071,10 @@ if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({}/*:any*/);
 else {
 	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	/* Quattro Pro 7-8 */
+	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	/* Quattro Pro 9 */
+	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
@@ -14013,7 +14338,7 @@ var XLSRecordEnum = {
 	/*::[*/0x08c5/*::]*/: { n:"ListCF", f:parsenoop },
 	/*::[*/0x08c6/*::]*/: { n:"FMQry", f:parsenoop },
 	/*::[*/0x08c7/*::]*/: { n:"FMSQry", f:parsenoop },
-	/*::[*/0x08c8/*::]*/: { n:"PLV", f:parsenoop }, /* supposedly PLV for Excel 11 */
+	/*::[*/0x08c8/*::]*/: { n:"PLV", f:parsenoop },
 	/*::[*/0x08c9/*::]*/: { n:"LnExt", f:parsenoop },
 	/*::[*/0x08ca/*::]*/: { n:"MkrExt", f:parsenoop },
 	/*::[*/0x08cb/*::]*/: { n:"CrtCoopt", f:parsenoop },
@@ -14187,6 +14512,7 @@ function parse_dom_table(table/*:HTMLElement*/, opts/*:?any*/)/*:Worksheet*/ {
 			var o = {t:'s', v:v};
 			if(v != null && v.length && !isNaN(Number(v))) o = {t:'n', v:Number(v)};
 			ws[encode_cell({c:C, r:R})] = o;
+			if(range.e.c < C) range.e.c = C;
 			C += CS;
 		}
 	}
@@ -15124,6 +15450,7 @@ function readSync(data/*:RawData*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
 		case 0x50: if(n[1] == 0x4B && n[2] < 0x20 && n[3] < 0x20) return read_zip(d, o); break;
 		case 0xEF: return parse_xlml(d, o);
 		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);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);
diff --git a/xlsx.js b/xlsx.js
index c420af2..e214229 100644
--- a/xlsx.js
+++ b/xlsx.js
@@ -5116,11 +5116,12 @@ var PRN = (function() {
 		if(str.substr(0,1024).indexOf("\t") == -1) sep = ","; else sep = "\t";
 		var R = 0, C = 0, v = 0;
 		var start = 0, end = 0, sepcc = sep.charCodeAt(0), instr = false, cc=0;
+		str = str.replace(/\r\n/g, "\n");
 		for(;end < str.length;++end) switch((cc=str.charCodeAt(end))) {
 			case 0x22: instr = !instr; break;
 			case sepcc: case 0x0a: if(instr) break;
 			var s = str.slice(start, end);
-			var cell = ({})
+			var cell = ({});
 			if(s.charCodeAt(0) == 0x3D) { cell.t = 'n'; cell.f = s.substr(1); }
 			else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
 			else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
@@ -5130,7 +5131,7 @@ var PRN = (function() {
 			start = end+1;
 			if(range.e.c < C) range.e.c = C;
 			if(range.e.r < R) range.e.r = R;
-			if(cc == sepcc) ++C; else { C = 0; ++R; }; break;
+			if(cc == sepcc) ++C; else { C = 0; ++R; } break;
 			default: break;
 		}
 
@@ -5180,6 +5181,326 @@ var PRN = (function() {
 	};
 })();
 
+var WK_ = (function() {
+	function lotushopper(data, cb, opts) {
+		if(!data) return;
+		prep_blob(data, data.l || 0);
+		var Enum = opts.Enum || WK1Enum;
+		while(data.l < data.length) {
+			var RT = data.read_shift(2);
+			var R = Enum[RT] || Enum[0xFF];
+			var length = data.read_shift(2);
+			var tgt = data.l + length;
+			var d = R.f(data, length, opts);
+			data.l = tgt;
+			if(cb(d, R, RT)) return;
+		}
+	}
+
+	function lotus_to_workbook(d, opts) {
+		switch(opts.type) {
+			case 'base64': return lotus_to_workbook_buf(s2a(Base64.decode(d)), opts);
+			case 'binary': return lotus_to_workbook_buf(s2a(d), opts);
+			case 'buffer':
+			case 'array': return lotus_to_workbook_buf(d, opts);
+		}
+		throw "Unsupported type " + opts.type;
+	}
+
+	function lotus_to_workbook_buf(d,opts) {
+		if(!d) return d;
+		var o = opts || {};
+
+		var s = {}, n = "Sheet1", sidx = 0;
+		var sheets = {}, snames = [n];
+
+		var refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+
+		if(d[2] == 0x02) o.Enum = WK1Enum;
+		else if(d[2] == 0x1a) o.Enum = WK3Enum;
+		else if(d[2] == 0x0e) { o.Enum = WK3Enum; o.qpro = true; d.l = 0; }
+		else throw new Error("Unrecognized LOTUS BOF " + d[2]);
+		lotushopper(d, function(val, R, RT) {
+			if(d[2] == 0x02) switch(RT) {
+				case 0x00:
+					o.vers = val;
+					if(val >= 0x1000) o.qpro = true;
+					break;
+				case 0x06: refguess = val; break; /* RANGE */
+				case 0x0F: /* LABEL */
+					if(!opts.qpro) val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x0D: /* INTEGER */
+				case 0x0E: /* NUMBER */
+				case 0x10: /* FORMULA */
+				case 0x33: /* STRING */
+					s[encode_cell(val[0])] = val[1];
+					/* TODO: FORMAT */
+					break;
+			} else switch(RT) {
+				case 0x16: /* LABEL16 */
+					val[1].v = val[1].v.substr(1);
+					/* falls through */
+				case 0x17: /* NUMBER17 */
+				case 0x18: /* NUMBER18 */
+				case 0x19: /* FORMULA19 */
+				case 0x25: /* NUMBER25 */
+				case 0x27: /* NUMBER27 */
+				case 0x28: /* FORMULA28 */
+					if(val[3] > sidx) {
+						s["!ref"] = encode_range(refguess);
+						sheets[n] = s;
+						s = {};
+						refguess = {s: {r:0, c:0}, e: {r:0, c:0} };
+						sidx = val[3]; n = "Sheet" + (sidx + 1);
+						snames.push(n);
+					}
+					s[encode_cell(val[0])] = val[1];
+					if(refguess.e.c < val[0].c) refguess.e.c = val[0].c;
+					if(refguess.e.r < val[0].r) refguess.e.r = val[0].r;
+					break;
+				default: break;
+			}
+		}, o);
+
+		s["!ref"] = encode_range(refguess);
+		sheets[n] = s;
+		return { SheetNames: snames, Sheets:sheets };
+	}
+
+	function parse_RANGE(blob, length) {
+		var o = {s:{c:0,r:0},e:{c:0,r:0}};
+		o.s.c = blob.read_shift(2);
+		o.s.r = blob.read_shift(2);
+		o.e.c = blob.read_shift(2);
+		o.e.r = blob.read_shift(2);
+		if(o.s.c == 0xFFFF) o.s.c = o.e.c = o.s.r = o.e.r = 0;
+		return o;
+	}
+
+	function parse_cell(blob, length, opts) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		if(opts.qpro && opts.vers != 0x5120) {
+			o[0].c = blob.read_shift(1);
+			blob.l++;
+			o[0].r = blob.read_shift(2);
+			blob.l+=2;
+		} else {
+			o[2] = blob.read_shift(1);
+			o[0].c = blob.read_shift(2); o[0].r = blob.read_shift(2);
+		}
+		return o;
+	}
+
+	function parse_LABEL(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		o[1].t = 's';
+		if(opts.vers == 0x5120) {
+			blob.l++;
+			var len = blob.read_shift(1);
+			o[1].v = blob.read_shift(len, 'utf8');
+			return o;
+		}
+		if(opts.qpro) blob.l++;
+		o[1].v = blob.read_shift(tgt - blob.l, 'cstr');
+		return o;
+	}
+
+	function parse_INTEGER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(2, 'i');
+		return o;
+	}
+
+	function parse_NUMBER(blob, length, opts) {
+		var o = parse_cell(blob, length, opts);
+		o[1].v = blob.read_shift(8, 'f');
+		return o;
+	}
+
+	function parse_FORMULA(blob, length, opts) {
+		var tgt = blob.l + length;
+		var o = parse_cell(blob, length, opts);
+		/* TODO: formula */
+		o[1].v = blob.read_shift(8, 'f');
+		if(opts.qpro) blob.l = tgt;
+		else {
+			var flen = blob.read_shift(2);
+			blob.l += flen;
+		}
+		return o;
+	}
+
+	function parse_cell_3(blob, length) {
+		var o = [{c:0,r:0}, {t:'n',v:0}, 0];
+		o[0].r = blob.read_shift(2); o[3] = blob[blob.l++]; o[0].c = blob[blob.l++];
+		return o;
+	}
+
+	function parse_LABEL_16(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].t = 's';
+		o[1].v = blob.read_shift(length - 4, 'cstr');
+		return o;
+	}
+
+	function parse_NUMBER_18(blob, length) {
+		var o = parse_cell_3(blob, length);
+		o[1].v = blob.read_shift(2);
+		var v = o[1].v >> 1;
+		/* TODO: figure out all of the corner cases */
+		if(o[1].v & 0x1) {
+			switch(v & 0x07) {
+				case 1: v = (v >> 3) * 500; break;
+				case 2: v = (v >> 3) / 20; break;
+				case 4: v = (v >> 3) / 2000; break;
+				case 6: v = (v >> 3) / 16; break;
+				case 7: v = (v >> 3) / 64; break;
+				default: throw "unknown NUMBER_18 encoding " + (v & 0x07);
+			}
+		}
+		o[1].v = v;
+		return o;
+	}
+
+	function parse_NUMBER_17(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		var v2 = blob.read_shift(4);
+		var e = blob.read_shift(2);
+		if(e == 0xFFFF) { o[1].v = 0; return o; }
+		var s = e & 0x8000; e = (e&0x7FFF) - 16446;
+		o[1].v = ((e > 0 ? (v2 << e) : (v2 >>> -e)) + (e > -32 ? (v1 << (e + 32)) : (v1 >>> -(e + 32))));
+		return o;
+	}
+
+	function parse_FORMULA_19(blob, length) {
+		var o = parse_NUMBER_17(blob, 14);
+		blob.l += length - 14; /* TODO: formula */
+		return o;
+	}
+
+	function parse_NUMBER_25(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(4);
+		o[1].v = v1 >> 6;
+		return o;
+	}
+
+	function parse_NUMBER_27(blob, length) {
+		var o = parse_cell_3(blob, length);
+		var v1 = blob.read_shift(8,'f');
+		o[1].v = v1;
+		return o;
+	}
+
+	function parse_FORMULA_28(blob, length) {
+		var o = parse_NUMBER_27(blob, 14);
+		blob.l += length - 10; /* TODO: formula */
+		return o;
+	}
+
+	var WK1Enum = {
+0x0000: { n:"BOF", f:parseuint16 },
+0x0001: { n:"EOF", f:parsenoop },
+0x0002: { n: "CALCMODE", f:parsenoop },
+0x0003: { n:"CALCORDER", f:parsenoop },
+0x0004: { n:"SPLIT", f:parsenoop },
+0x0005: { n:"SYNC", f:parsenoop },
+0x0006: { n:"RANGE", f:parse_RANGE },
+0x0007: { n:"WINDOW1", f:parsenoop },
+0x0008: { n:"COLW1", f:parsenoop },
+0x0009: { n:"WINTWO", f:parsenoop },
+0x000A: { n:"COLW2", f:parsenoop },
+0x000B: { n:"NAME", f:parsenoop },
+0x000C: { n:"BLANK", f:parsenoop },
+0x000D: { n:"INTEGER", f:parse_INTEGER },
+0x000E: { n:"NUMBER", f:parse_NUMBER },
+0x000F: { n:"LABEL", f:parse_LABEL },
+0x0010: { n:"FORMULA", f:parse_FORMULA },
+0x0018: { n:"TABLE", f:parsenoop },
+0x0019: { n:"ORANGE", f:parsenoop },
+0x001A: { n:"PRANGE", f:parsenoop },
+0x001B: { n:"SRANGE", f:parsenoop },
+0x001C: { n:"FRANGE", f:parsenoop },
+0x001D: { n:"KRANGE1", f:parsenoop },
+0x0020: { n:"HRANGE", f:parsenoop },
+0x0023: { n:"KRANGE2", f:parsenoop },
+0x0024: { n:"PROTEC", f:parsenoop },
+0x0025: { n:"FOOTER", f:parsenoop },
+0x0026: { n:"HEADER", f:parsenoop },
+0x0027: { n:"SETUP", f:parsenoop },
+0x0028: { n:"MARGINS", f:parsenoop },
+0x0029: { n:"LABELFMT", f:parsenoop },
+0x002A: { n:"TITLES", f:parsenoop },
+0x002B: { n:"SHEETJS", f:parsenoop },
+0x002D: { n:"GRAPH", f:parsenoop },
+0x002E: { n:"NGRAPH", f:parsenoop },
+0x002F: { n:"CALCCOUNT", f:parsenoop },
+0x0030: { n:"UNFORMATTED", f:parsenoop },
+0x0031: { n:"CURSORW12", f:parsenoop },
+0x0032: { n:"WINDOW", f:parsenoop },
+0x0033: { n:"STRING", f:parse_LABEL },
+0x0037: { n:"PASSWORD", f:parsenoop },
+0x0038: { n:"LOCKED", f:parsenoop },
+0x003C: { n:"QUERY", f:parsenoop },
+0x003D: { n:"QUERYNAME", f:parsenoop },
+0x003E: { n:"PRINT", f:parsenoop },
+0x003F: { n:"PRINTNAME", f:parsenoop },
+0x0040: { n:"GRAPH2", f:parsenoop },
+0x0041: { n:"GRAPHNAME", f:parsenoop },
+0x0042: { n:"ZOOM", f:parsenoop },
+0x0043: { n:"SYMSPLIT", f:parsenoop },
+0x0044: { n:"NSROWS", f:parsenoop },
+0x0045: { n:"NSCOLS", f:parsenoop },
+0x0046: { n:"RULER", f:parsenoop },
+0x0047: { n:"NNAME", f:parsenoop },
+0x0048: { n:"ACOMM", f:parsenoop },
+0x0049: { n:"AMACRO", f:parsenoop },
+0x004A: { n:"PARSE", f:parsenoop },
+0x00FF: { n:"", f:parsenoop }
+	};
+
+	var WK3Enum = {
+0x0000: { n:"BOF", f:parsenoop },
+0x0001: { n:"EOF", f:parsenoop },
+0x0003: { n:"??", f:parsenoop },
+0x0004: { n:"??", f:parsenoop },
+0x0005: { n:"??", f:parsenoop },
+0x0006: { n:"??", f:parsenoop },
+0x0007: { n:"??", f:parsenoop },
+0x0009: { n:"??", f:parsenoop },
+0x000a: { n:"??", f:parsenoop },
+0x000b: { n:"??", f:parsenoop },
+0x000c: { n:"??", f:parsenoop },
+0x000e: { n:"??", f:parsenoop },
+0x000f: { n:"??", f:parsenoop },
+0x0010: { n:"??", f:parsenoop },
+0x0011: { n:"??", f:parsenoop },
+0x0012: { n:"??", f:parsenoop },
+0x0013: { n:"??", f:parsenoop },
+0x0015: { n:"??", f:parsenoop },
+0x0016: { n:"LABEL16", f:parse_LABEL_16},
+0x0017: { n:"NUMBER17", f:parse_NUMBER_17 },
+0x0018: { n:"NUMBER18", f:parse_NUMBER_18 },
+0x0019: { n:"FORMULA19", f:parse_FORMULA_19},
+0x001a: { n:"??", f:parsenoop },
+0x001b: { n:"??", f:parsenoop },
+0x001c: { n:"??", f:parsenoop },
+0x001d: { n:"??", f:parsenoop },
+0x001e: { n:"??", f:parsenoop },
+0x001f: { n:"??", f:parsenoop },
+0x0021: { n:"??", f:parsenoop },
+0x0025: { n:"NUMBER25", f:parse_NUMBER_25 },
+0x0027: { n:"NUMBER27", f:parse_NUMBER_27 },
+0x0028: { n:"FORMULA28", f:parse_FORMULA_28 },
+0x00FF: { n:"", f:parsenoop }
+	};
+	return {
+		to_workbook: lotus_to_workbook
+	};
+})();
 /* 18.4.1 charset to codepage mapping */
 var CS2CP = ({
 0:    1252, /* ANSI */
@@ -12689,6 +13010,10 @@ if(CompObj) CompObjP = parse_compobj(CompObj);
 if(options.bookProps && !options.bookSheets) WorkbookP = ({});
 else {
 	if(Workbook) WorkbookP = parse_workbook(Workbook.content, options, !!Workbook.find);
+	/* Quattro Pro 7-8 */
+	else if(cfb.find('PerfectOffice_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('PerfectOffice_MAIN').content, options);
+	/* Quattro Pro 9 */
+	else if(cfb.find('NativeContent_MAIN')) WorkbookP = WK_.to_workbook(cfb.find('NativeContent_MAIN').content, options);
 	else throw new Error("Cannot find Workbook stream");
 }
 
@@ -13952,7 +14277,7 @@ var XLSRecordEnum = {
 0x08c5: { n:"ListCF", f:parsenoop },
 0x08c6: { n:"FMQry", f:parsenoop },
 0x08c7: { n:"FMSQry", f:parsenoop },
-0x08c8: { n:"PLV", f:parsenoop }, /* supposedly PLV for Excel 11 */
+0x08c8: { n:"PLV", f:parsenoop },
 0x08c9: { n:"LnExt", f:parsenoop },
 0x08ca: { n:"MkrExt", f:parsenoop },
 0x08cb: { n:"CrtCoopt", f:parsenoop },
@@ -14126,6 +14451,7 @@ function parse_dom_table(table, opts) {
 			var o = {t:'s', v:v};
 			if(v != null && v.length && !isNaN(Number(v))) o = {t:'n', v:Number(v)};
 			ws[encode_cell({c:C, r:R})] = o;
+			if(range.e.c < C) range.e.c = C;
 			C += CS;
 		}
 	}
@@ -15059,6 +15385,7 @@ function readSync(data, opts) {
 		case 0x50: if(n[1] == 0x4B && n[2] < 0x20 && n[3] < 0x20) return read_zip(d, o); break;
 		case 0xEF: return parse_xlml(d, o);
 		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);
 	}
 	if(n[2] <= 12 && n[3] <= 31) return DBF.to_workbook(d, o);