diff --git a/README.md b/README.md
index d7ed4ed..ff3c2c6 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,12 @@ Hosted URL: <https://docs.sheetjs.com>
 
 ## Development
 
+The site source code is in the `docz` folder. `make` builds the static site and
+moves the generated pages and scripts to the `docs` folder.
+
 `docz/version.js` exports a version number for use in docs pages.
 
-Build commands:
+### Build Commands
 
 ```bash
 $ make init    # install dependencies
@@ -18,13 +21,22 @@ $ make spell   # spell check (.spelling custom dictionary)
 $ make graph   # build format graph and legend
 ```
 
-## Live Demos
+### Formats Graph
 
-**Imports do not work from live codeblocks!**
+The formats graph and legend are written in the DOT language. Rebuilding the
+graphs will require Graphviz (`brew install graphviz` on macOS)
+
+## Live Demos
 
 <https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js> is loaded
 on each page, making the `XLSX` variable available to live blocks.
 
+### Page-Specific Scripts
+
+**Imports do not work from live codeblocks!**
+
+Docusaurus does not have an official recommendation for this workflow.
+
 Specific pages can load scripts using the `head` component:
 
 ```html
@@ -33,6 +45,27 @@ Specific pages can load scripts using the `head` component:
 </head>
 ```
 
+**Adding scripts through `head` is known to be brittle!**
+
+Live codeblocks that use external libraries in `useEffect` hooks should check
+before using variables. For example, the Dropbox live demo tests if `Dropbox` is
+defined before proceeding. If it is not defined, a message is displayed.
+
+```jsx
+function SheetJSTestDropbox() {
+  const [msg, setMsg] = React.useState("Dropbox is defined");
+
+  React.useEffect(() => {
+    if(typeof Dropbox == "undefined") return setMsg("Dropbox is not defined");
+  }, []);
+  return ( <b>{msg}</b> );
+}
+```
+
 ## Other Notes
 
-`src/theme/Admonition` was swizzled from 2.4.1 to address Docusaurus issue 8568
\ No newline at end of file
+`src/theme/Admonition` was swizzled from 2.4.1 to enable `pass` for hiding
+header text. See Docusaurus issue 8568 for more details.
+
+`src/theme/prism-include-languages.js` was swizzled from 2.4.1 to support the
+Liquid language. See Docusaurus issue 6872 for more details.
\ No newline at end of file
diff --git a/docbits/00_intro.md b/docbits/00_intro.md
deleted file mode 100644
index f594d11..0000000
--- a/docbits/00_intro.md
+++ /dev/null
@@ -1,27 +0,0 @@
-# [SheetJS](https://sheetjs.com)
-
-The SheetJS Community Edition offers battle-tested open-source solutions for
-extracting useful data from almost any complex spreadsheet and generating new
-spreadsheets that will work with legacy and modern software alike.
-
-[SheetJS Pro](https://sheetjs.com/pro) offers solutions beyond data processing:
-Edit complex templates with ease; let out your inner Picasso with styling; make
-custom sheets with images/graphs/PivotTables; evaluate formula expressions and
-port calculations to web apps; automate common spreadsheet tasks, and much more!
-
-![License](https://img.shields.io/github/license/SheetJS/sheetjs)
-[![Build Status](https://img.shields.io/github/workflow/status/sheetjs/sheetjs/Tests:%20node.js)](https://github.com/SheetJS/sheetjs/actions)
-[![Snyk Vulnerabilities](https://img.shields.io/snyk/vulnerabilities/github/SheetJS/sheetjs)](https://snyk.io/test/github/SheetJS/sheetjs)
-[![npm Downloads](https://img.shields.io/npm/dm/xlsx.svg)](https://npmjs.org/package/xlsx)
-[![Analytics](https://ga-beacon.appspot.com/UA-36810333-1/SheetJS/sheetjs?pixel)](https://github.com/SheetJS/sheetjs)
-
-[**Browser Test and Support Matrix**](https://oss.sheetjs.com/sheetjs/tests/)
-
-[![Build Status](https://saucelabs.com/browser-matrix/sheetjs.svg)](https://saucelabs.com/u/sheetjs)
-
-**Supported File Formats**
-
-![circo graph of format support](formats.png)
-
-![graph legend](legend.png)
-
diff --git a/docbits/01_toc.md b/docbits/01_toc.md
deleted file mode 100644
index 62ecb26..0000000
--- a/docbits/01_toc.md
+++ /dev/null
@@ -1,8 +0,0 @@
-## Table of Contents
-
-<details>
-  <summary><b>Expand to show Table of Contents</b></summary>
-
-<!-- toc -->
-</details>
-
diff --git a/docbits/10_install.md b/docbits/10_install.md
deleted file mode 100644
index b67a92e..0000000
--- a/docbits/10_install.md
+++ /dev/null
@@ -1,212 +0,0 @@
-## Getting Started
-
-### Installation
-
-#### Standalone Browser Scripts
-
-Each standalone release script is available at <https://cdn.sheetjs.com/>.
-
-The current version is `0.18.7` and can be referenced as follows:
-
-```html
-<!-- use version 0.18.7 -->
-<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-0.18.7/package/dist/xlsx.full.min.js"></script>
-```
-
-The `latest` tag references the latest version and updates with each release:
-
-```html
-<!-- use the latest version -->
-<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
-```
-
-**For production use, scripts should be downloaded and added to a public folder
-alongside other scripts.**
-
-<details>
-  <summary><b>Browser builds</b> (click to show)</summary>
-
-The complete single-file version is generated at `dist/xlsx.full.min.js`
-
-`dist/xlsx.core.min.js` omits codepage library (no support for XLS encodings)
-
-A slimmer build is generated at `dist/xlsx.mini.min.js`. Compared to full build:
-- codepage library skipped (no support for XLS encodings)
-- no support for XLSB / XLS / Lotus 1-2-3 / SpreadsheetML 2003 / Numbers
-- node stream utils removed
-
-These scripts are also available on the CDN:
-
-```html
-<!-- use xlsx.mini.min.js from version 0.18.7 -->
-<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-0.18.7/package/dist/xlsx.mini.min.js"></script>
-```
-
-</details>
-
-
-[Bower](https://bower.io/) plays nice with the CDN tarballs:
-
-```bash
-$ npx bower install https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz
-```
-
-Bower will place the standalone scripts in `bower_components/js-xlsx/dist/`
-
-<details>
-  <summary><b>Internet Explorer and ECMAScript 3 Compatibility</b> (click to show)</summary>
-
-For broad compatibility with JavaScript engines, the library is written using
-ECMAScript 3 language dialect as well as some ES5 features like `Array#forEach`.
-Older browsers require shims to provide missing functions.
-
-To use the shim, add the shim before the script tag that loads `xlsx.js`:
-
-```html
-<!-- add the shim first -->
-<script type="text/javascript" src="shim.min.js"></script>
-<!-- after the shim is referenced, add the library -->
-<script type="text/javascript" src="xlsx.full.min.js"></script>
-```
-
-Due to SSL certificate compatibility issues, it is highly recommended to save
-the Standalone and Shim scripts from <https://cdn.sheetjs.com/> and add to a
-public directory in the site.
-
-The script also includes `IE_LoadFile` and `IE_SaveFile` for loading and saving
-files in Internet Explorer versions 6-9.  The `xlsx.extendscript.js` script
-bundles the shim in a format suitable for Photoshop and other Adobe products.
-
-</details>
-
-
-#### ECMAScript Modules
-
-_Browser ESM_
-
-The ECMAScript Module build is saved to `xlsx.mjs` and can be directly added to
-a page with a `script` tag using `type="module"`:
-
-```html
-<script type="module">
-import { read, writeFileXLSX } from "https://cdn.sheetjs.com/xlsx-0.18.7/package/xlsx.mjs";
-
-/* load the codepage support library for extended support with older formats  */
-import { set_cptable } from "https://cdn.sheetjs.com/xlsx-0.18.7/package/xlsx.mjs";
-import * as cptable from 'https://cdn.sheetjs.com/xlsx-0.18.7/package/dist/cpexcel.full.mjs';
-set_cptable(cptable);
-</script>
-```
-
-_Frameworks (Angular, VueJS, React) and Bundlers (webpack, etc)_
-
-The NodeJS package is readily installed from the tarballs:
-
-```bash
-$ npm  install --save https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # npm
-$ pnpm install --save https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # pnpm
-$ yarn add     --save https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # yarn
-```
-
-Once installed, the library can be imported under the name `xlsx`:
-
-```ts
-import { read, writeFileXLSX } from "xlsx";
-
-/* load the codepage support library for extended support with older formats  */
-import { set_cptable } from "xlsx";
-import * as cptable from 'xlsx/dist/cpexcel.full.mjs';
-set_cptable(cptable);
-```
-
-#### Deno
-
-`xlsx.mjs` can be imported in Deno:
-
-```ts
-// @deno-types="https://cdn.sheetjs.com/xlsx-0.18.7/package/types/index.d.ts"
-import * as XLSX from 'https://cdn.sheetjs.com/xlsx-0.18.7/package/xlsx.mjs';
-
-/* load the codepage support library for extended support with older formats  */
-import * as cptable from 'https://cdn.sheetjs.com/xlsx-0.18.7/package/dist/cpexcel.full.mjs';
-XLSX.set_cptable(cptable);
-```
-
-#### NodeJS
-
-Tarballs are available on <https://cdn.sheetjs.com>.
-
-Each individual version can be referenced using a similar URL pattern.
-<https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz> is the URL for `0.18.7`
-
-<https://cdn.sheetjs.com/xlsx-latest/xlsx-latest.tgz> is a link to the latest
-version and will refresh on each release.
-
-_Installation_
-
-Tarballs can be directly installed using a package manager:
-
-```bash
-$ npm  install https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # npm
-$ pnpm install https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # pnpm
-$ yarn add     https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz # yarn
-```
-
-For general stability, "vendoring" modules is the recommended approach:
-
-1) Download the tarball (`xlsx-0.18.7.tgz`) for the desired version. The current
-   version is available at <https://cdn.sheetjs.com/xlsx-0.18.7/xlsx-0.18.7.tgz>
-
-2) Create a `vendor` subdirectory at the root of your project and move the
-   tarball to that folder.  Add it to your project repository.
-
-3) Install the tarball using a package manager:
-
-```bash
-$ npm  install --save file:vendor/xlsx-0.18.7.tgz # npm
-$ pnpm install --save file:vendor/xlsx-0.18.7.tgz # pnpm
-$ yarn add            file:vendor/xlsx-0.18.7.tgz # yarn
-```
-
-The package will be installed and accessible as `xlsx`.
-
-_Usage_
-
-By default, the module supports `require` and it will automatically add support
-for streams and filesystem access:
-
-```js
-var XLSX = require("xlsx");
-```
-
-The module also ships with `xlsx.mjs` for use with `import`.  The `mjs` version
-does not automatically load native node modules:
-
-```js
-import * as XLSX from 'xlsx/xlsx.mjs';
-
-/* load 'fs' for readFile and writeFile support */
-import * as fs from 'fs';
-XLSX.set_fs(fs);
-
-/* load 'stream' for stream support */
-import { Readable } from 'stream';
-XLSX.stream.set_readable(Readable);
-
-/* load the codepage support library for extended support with older formats  */
-import * as cpexcel from 'xlsx/dist/cpexcel.full.mjs';
-XLSX.set_cptable(cpexcel);
-```
-
-#### Photoshop and InDesign
-
-`dist/xlsx.extendscript.js` is an ExtendScript build for Photoshop and InDesign.
-<https://cdn.sheetjs.com/xlsx-0.18.7/package/dist/xlsx.extendscript.js> is the
-current version.  After downloading the script, it can be directly referenced
-with a `#include` directive:
-
-```extendscript
-#include "xlsx.extendscript.js"
-```
-
-
diff --git a/docbits/13_usage.md b/docbits/13_usage.md
deleted file mode 100644
index 4e89c14..0000000
--- a/docbits/13_usage.md
+++ /dev/null
@@ -1,270 +0,0 @@
-### Usage
-
-Most scenarios involving spreadsheets and data can be broken into 5 parts:
-
-1) **Acquire Data**:  Data may be stored anywhere: local or remote files,
-   databases, HTML TABLE, or even generated programmatically in the web browser.
-
-2) **Extract Data**:  For spreadsheet files, this involves parsing raw bytes to
-   read the cell data. For general JS data, this involves reshaping the data.
-
-3) **Process Data**:  From generating summary statistics to cleaning data
-   records, this step is the heart of the problem.
-
-4) **Package Data**:  This can involve making a new spreadsheet or serializing
-   with `JSON.stringify` or writing XML or simply flattening data for UI tools.
-
-5) **Release Data**:  Spreadsheet files can be uploaded to a server or written
-   locally.  Data can be presented to users in an HTML TABLE or data grid.
-
-A common problem involves generating a valid spreadsheet export from data stored
-in an HTML table.  In this example, an HTML TABLE on the page will be scraped,
-a row will be added to the bottom with the date of the report, and a new file
-will be generated and downloaded locally. `XLSX.writeFile` takes care of
-packaging the data and attempting a local download:
-
-```js
-// Acquire Data (reference to the HTML table)
-var table_elt = document.getElementById("my-table-id");
-
-// Extract Data (create a workbook object from the table)
-var workbook = XLSX.utils.table_to_book(table_elt);
-
-// Process Data (add a new row)
-var ws = workbook.Sheets["Sheet1"];
-XLSX.utils.sheet_add_aoa(ws, [["Created "+new Date().toISOString()]], {origin:-1});
-
-// Package and Release Data (`writeFile` tries to write and save an XLSB file)
-XLSX.writeFile(workbook, "Report.xlsb");
-```
-
-This library tries to simplify steps 2 and 4 with functions to extract useful
-data from spreadsheet files (`read` / `readFile`) and generate new spreadsheet
-files from data (`write` / `writeFile`).  Additional utility functions like
-`table_to_book` work with other common data sources like HTML tables.
-
-This documentation and various demo projects cover a number of common scenarios
-and approaches for steps 1 and 5.
-
-Utility functions help with step 3.
-
-["Acquiring and Extracting Data"](#acquiring-and-extracting-data) describes
-solutions for common data import scenarios.
-
-["Packaging and Releasing Data"](#packaging-and-releasing-data) describes
-solutions for common data export scenarios.
-
-["Processing Data"](#packaging-and-releasing-data) describes solutions for
-common workbook processing and manipulation scenarios.
-
-["Utility Functions"](#utility-functions) details utility functions for
-translating JSON Arrays and other common JS structures into worksheet objects.
-
-### The Zen of SheetJS
-
-_Data processing should fit in any workflow_
-
-The library does not impose a separate lifecycle.  It fits nicely in websites
-and apps built using any framework.  The plain JS data objects play nice with
-Web Workers and future APIs.
-
-_JavaScript is a powerful language for data processing_
-
-The ["Common Spreadsheet Format"](#common-spreadsheet-format) is a simple object
-representation of the core concepts of a workbook.  The various functions in the
-library provide low-level tools for working with the object.
-
-For friendly JS processing, there are utility functions for converting parts of
-a worksheet to/from an Array of Arrays.  The following example combines powerful
-JS Array methods with a network request library to download data, select the
-information we want and create a workbook file:
-
-<details>
-  <summary><b>Get Data from a JSON Endpoint and Generate a Workbook</b> (click to show)</summary>
-
-The goal is to generate a XLSB workbook of US President names and birthdays.
-
-**Acquire Data**
-
-_Raw Data_
-
-<https://theunitedstates.io/congress-legislators/executive.json> has the desired
-data.  For example, John Adams:
-
-```js
-{
-  "id": { /* (data omitted) */ },
-  "name": {
-    "first": "John",          // <-- first name
-    "last": "Adams"           // <-- last name
-  },
-  "bio": {
-    "birthday": "1735-10-19", // <-- birthday
-    "gender": "M"
-  },
-  "terms": [
-    { "type": "viceprez", /* (other fields omitted) */ },
-    { "type": "viceprez", /* (other fields omitted) */ },
-    { "type": "prez", /* (other fields omitted) */ } // <-- look for "prez"
-  ]
-}
-```
-
-_Filtering for Presidents_
-
-The dataset includes Aaron Burr, a Vice President who was never President!
-
-`Array#filter` creates a new array with the desired rows.  A President served
-at least one term with `type` set to `"prez"`.  To test if a particular row has
-at least one `"prez"` term, `Array#some` is another native JS function.  The
-complete filter would be:
-
-```js
-const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
-```
-
-_Lining up the data_
-
-For this example, the name will be the first name combined with the last name
-(`row.name.first + " " + row.name.last`) and the birthday will be the subfield
-`row.bio.birthday`.  Using `Array#map`, the dataset can be massaged in one call:
-
-```js
-const rows = prez.map(row => ({
-  name: row.name.first + " " + row.name.last,
-  birthday: row.bio.birthday
-}));
-```
-
-The result is an array of "simple" objects with no nesting:
-
-```js
-[
-  { name: "George Washington", birthday: "1732-02-22" },
-  { name: "John Adams", birthday: "1735-10-19" },
-  // ... one row per President
-]
-```
-
-**Extract Data**
-
-With the cleaned dataset, `XLSX.utils.json_to_sheet` generates a worksheet:
-
-```js
-const worksheet = XLSX.utils.json_to_sheet(rows);
-```
-
-`XLSX.utils.book_new` creates a new workbook and `XLSX.utils.book_append_sheet`
-appends a worksheet to the workbook. The new worksheet will be called "Dates":
-
-```js
-const workbook = XLSX.utils.book_new();
-XLSX.utils.book_append_sheet(workbook, worksheet, "Dates");
-```
-
-**Process Data**
-
-_Fixing headers_
-
-By default, `json_to_sheet` creates a worksheet with a header row. In this case,
-the headers come from the JS object keys: "name" and "birthday".
-
-The headers are in cells A1 and B1.  `XLSX.utils.sheet_add_aoa` can write text
-values to the existing worksheet starting at cell A1:
-
-```js
-XLSX.utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });
-```
-
-_Fixing Column Widths_
-
-Some of the names are longer than the default column width.  Column widths are
-set by [setting the `"!cols"` worksheet property](#row-and-column-properties).
-
-The following line sets the width of column A to approximately 10 characters:
-
-```js
-worksheet["!cols"] = [ { wch: 10 } ]; // set column A width to 10 characters
-```
-
-One `Array#reduce` call over `rows` can calculate the maximum width:
-
-```js
-const max_width = rows.reduce((w, r) => Math.max(w, r.name.length), 10);
-worksheet["!cols"] = [ { wch: max_width } ];
-```
-
-Note: If the starting point was a file or HTML table, `XLSX.utils.sheet_to_json`
-will generate an array of JS objects.
-
-**Package and Release Data**
-
-`XLSX.writeFile` creates a spreadsheet file and tries to write it to the system.
-In the browser, it will try to prompt the user to download the file.  In NodeJS,
-it will write to the local directory.
-
-```js
-XLSX.writeFile(workbook, "Presidents.xlsx");
-```
-
-**Complete Example**
-
-```js
-// Uncomment the next line for use in NodeJS:
-// const XLSX = require("xlsx"), axios = require("axios");
-
-(async() => {
-  /* fetch JSON data and parse */
-  const url = "https://theunitedstates.io/congress-legislators/executive.json";
-  const raw_data = (await axios(url, {responseType: "json"})).data;
-
-  /* filter for the Presidents */
-  const prez = raw_data.filter(row => row.terms.some(term => term.type === "prez"));
-
-  /* flatten objects */
-  const rows = prez.map(row => ({
-    name: row.name.first + " " + row.name.last,
-    birthday: row.bio.birthday
-  }));
-
-  /* generate worksheet and workbook */
-  const worksheet = XLSX.utils.json_to_sheet(rows);
-  const workbook = XLSX.utils.book_new();
-  XLSX.utils.book_append_sheet(workbook, worksheet, "Dates");
-
-  /* fix headers */
-  XLSX.utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });
-
-  /* calculate column width */
-  const max_width = rows.reduce((w, r) => Math.max(w, r.name.length), 10);
-  worksheet["!cols"] = [ { wch: max_width } ];
-
-  /* create an XLSX file and try to save to Presidents.xlsx */
-  XLSX.writeFile(workbook, "Presidents.xlsx");
-})();
-```
-
-For use in the web browser, assuming the snippet is saved to `snippet.js`,
-script tags should be used to include the `axios` and `xlsx` standalone builds:
-
-```html
-<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
-<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
-<script src="snippet.js"></script>
-```
-
-
-</details>
-
-_File formats are implementation details_
-
-The parser covers a wide gamut of common spreadsheet file formats to ensure that
-"HTML-saved-as-XLS" files work as well as actual XLS or XLSX files.
-
-The writer supports a number of common output formats for broad compatibility
-with the data ecosystem.
-
-To the greatest extent possible, data processing code should not have to worry
-about the specific file formats involved.
-
-
diff --git a/docbits/16_demos.md b/docbits/16_demos.md
deleted file mode 100644
index 43e7ba1..0000000
--- a/docbits/16_demos.md
+++ /dev/null
@@ -1,50 +0,0 @@
-### JS Ecosystem Demos
-
-The [`demos` directory](demos/) includes sample projects for:
-
-**Frameworks and APIs**
-- [`angularjs`](demos/angular/)
-- [`angular and ionic`](demos/angular2/)
-- [`knockout`](demos/knockout/)
-- [`meteor`](demos/meteor/)
-- [`react, react-native, next`](demos/react/)
-- [`vue 2.x, weex, nuxt`](demos/vue/)
-- [`XMLHttpRequest and fetch`](demos/xhr/)
-- [`nodejs server`](demos/server/)
-- [`databases and key/value stores`](demos/database/)
-- [`typed arrays and math`](demos/array/)
-
-**Bundlers and Tooling**
-- [`browserify`](demos/browserify/)
-- [`fusebox`](demos/fusebox/)
-- [`parcel`](demos/parcel/)
-- [`requirejs`](demos/requirejs/)
-- [`rollup`](demos/rollup/)
-- [`systemjs`](demos/systemjs/)
-- [`typescript`](demos/typescript/)
-- [`webpack 2.x`](demos/webpack/)
-
-**Platforms and Integrations**
-- [`deno`](demos/deno/)
-- [`electron application`](demos/electron/)
-- [`nw.js application`](demos/nwjs/)
-- [`Chrome / Chromium extensions`](demos/chrome/)
-- [`Download a Google Sheet locally`](demos/google-sheet/)
-- [`Adobe ExtendScript`](demos/extendscript/)
-- [`Headless Browsers`](demos/headless/)
-- [`canvas-datagrid`](demos/datagrid/)
-- [`x-spreadsheet`](demos/xspreadsheet/)
-- [`react-data-grid`](demos/react/modify/)
-- [`vue3-table-light`](demos/vue/modify/)
-- [`Swift JSC and other engines`](demos/altjs/)
-- [`"serverless" functions`](demos/function/)
-- [`internet explorer`](demos/oldie/)
-
-Other examples are included in the [showcase](demos/showcase/).
-
-<https://sheetjs.com/demos/modify.html> shows a complete example of reading,
-modifying, and writing files.
-
-<https://github.com/SheetJS/sheetjs/blob/HEAD/bin/xlsx.njs> is the command-line
-tool included with node installations, reading spreadsheet files and exporting
-the contents in various formats.
diff --git a/docbits/20_import.md b/docbits/20_import.md
deleted file mode 100644
index 68343be..0000000
--- a/docbits/20_import.md
+++ /dev/null
@@ -1,443 +0,0 @@
-## Acquiring and Extracting Data
-
-### Parsing Workbooks
-
-**API**
-
-_Extract data from spreadsheet bytes_
-
-```js
-var workbook = XLSX.read(data, opts);
-```
-
-The `read` method can extract data from spreadsheet bytes stored in a JS string,
-"binary string", NodeJS buffer or typed array (`Uint8Array` or `ArrayBuffer`).
-
-
-_Read spreadsheet bytes from a local file and extract data_
-
-```js
-var workbook = XLSX.readFile(filename, opts);
-```
-
-The `readFile` method attempts to read a spreadsheet file at the supplied path.
-Browsers generally do not allow reading files in this way (it is deemed a
-security risk), and attempts to read files in this way will throw an error.
-
-The second `opts` argument is optional. ["Parsing Options"](#parsing-options)
-covers the supported properties and behaviors.
-
-**Examples**
-
-Here are a few common scenarios (click on each subtitle to see the code):
-
-<details>
-  <summary><b>Local file in a NodeJS server</b> (click to show)</summary>
-
-`readFile` uses `fs.readFileSync` under the hood:
-
-```js
-var XLSX = require("xlsx");
-
-var workbook = XLSX.readFile("test.xlsx");
-```
-
-For Node ESM, the `readFile` helper is not enabled. Instead, `fs.readFileSync`
-should be used to read the file data as a `Buffer` for use with `XLSX.read`:
-
-```js
-import { readFileSync } from "fs";
-import { read } from "xlsx/xlsx.mjs";
-
-const buf = readFileSync("test.xlsx");
-/* buf is a Buffer */
-const workbook = read(buf);
-```
-
-</details>
-
-<details>
-  <summary><b>Local file in a Deno application</b> (click to show)</summary>
-
-`readFile` uses `Deno.readFileSync` under the hood:
-
-```js
-// @deno-types="https://deno.land/x/sheetjs/types/index.d.ts"
-import * as XLSX from 'https://deno.land/x/sheetjs/xlsx.mjs'
-
-const workbook = XLSX.readFile("test.xlsx");
-```
-
-Applications reading files must be invoked with the `--allow-read` flag.  The
-[`deno` demo](demos/deno/) has more examples
-
-</details>
-
-<details>
-  <summary><b>User-submitted file in a web page ("Drag-and-Drop")</b> (click to show)</summary>
-
-For modern websites targeting Chrome 76+, `File#arrayBuffer` is recommended:
-
-```js
-// XLSX is a global from the standalone script
-
-async function handleDropAsync(e) {
-  e.stopPropagation(); e.preventDefault();
-  const f = e.dataTransfer.files[0];
-  /* f is a File */
-  const data = await f.arrayBuffer();
-  /* data is an ArrayBuffer */
-  const workbook = XLSX.read(data);
-
-  /* DO SOMETHING WITH workbook HERE */
-}
-drop_dom_element.addEventListener("drop", handleDropAsync, false);
-```
-
-For maximal compatibility, the `FileReader` API should be used:
-
-```js
-function handleDrop(e) {
-  e.stopPropagation(); e.preventDefault();
-  var f = e.dataTransfer.files[0];
-  /* f is a File */
-  var reader = new FileReader();
-  reader.onload = function(e) {
-    var data = e.target.result;
-    /* reader.readAsArrayBuffer(file) -> data will be an ArrayBuffer */
-    var workbook = XLSX.read(data);
-
-    /* DO SOMETHING WITH workbook HERE */
-  };
-  reader.readAsArrayBuffer(f);
-}
-drop_dom_element.addEventListener("drop", handleDrop, false);
-```
-
-<https://oss.sheetjs.com/sheetjs/> demonstrates the FileReader technique.
-
-</details>
-
-<details>
-  <summary><b>User-submitted file with an HTML INPUT element</b> (click to show)</summary>
-
-Starting with an HTML INPUT element with `type="file"`:
-
-```html
-<input type="file" id="input_dom_element">
-```
-
-For modern websites targeting Chrome 76+, `Blob#arrayBuffer` is recommended:
-
-```js
-// XLSX is a global from the standalone script
-
-async function handleFileAsync(e) {
-  const file = e.target.files[0];
-  const data = await file.arrayBuffer();
-  /* data is an ArrayBuffer */
-  const workbook = XLSX.read(data);
-
-  /* DO SOMETHING WITH workbook HERE */
-}
-input_dom_element.addEventListener("change", handleFileAsync, false);
-```
-
-For broader support (including IE10+), the `FileReader` approach is recommended:
-
-```js
-function handleFile(e) {
-  var file = e.target.files[0];
-  var reader = new FileReader();
-  reader.onload = function(e) {
-    var data = e.target.result;
-    /* reader.readAsArrayBuffer(file) -> data will be an ArrayBuffer */
-    var workbook = XLSX.read(e.target.result);
-
-    /* DO SOMETHING WITH workbook HERE */
-  };
-  reader.readAsArrayBuffer(file);
-}
-input_dom_element.addEventListener("change", handleFile, false);
-```
-
-The [`oldie` demo](demos/oldie/) shows an IE-compatible fallback scenario.
-
-</details>
-
-<details>
-  <summary><b>Fetching a file in the web browser ("Ajax")</b> (click to show)</summary>
-
-For modern websites targeting Chrome 42+, `fetch` is recommended:
-
-```js
-// XLSX is a global from the standalone script
-
-(async() => {
-  const url = "http://oss.sheetjs.com/test_files/formula_stress_test.xlsx";
-  const data = await (await fetch(url)).arrayBuffer();
-  /* data is an ArrayBuffer */
-  const workbook = XLSX.read(data);
-
-  /* DO SOMETHING WITH workbook HERE */
-})();
-```
-
-For broader support, the `XMLHttpRequest` approach is recommended:
-
-```js
-var url = "http://oss.sheetjs.com/test_files/formula_stress_test.xlsx";
-
-/* set up async GET request */
-var req = new XMLHttpRequest();
-req.open("GET", url, true);
-req.responseType = "arraybuffer";
-
-req.onload = function(e) {
-  var workbook = XLSX.read(req.response);
-
-  /* DO SOMETHING WITH workbook HERE */
-};
-
-req.send();
-```
-
-The [`xhr` demo](demos/xhr/) includes a longer discussion and more examples.
-
-<http://oss.sheetjs.com/sheetjs/ajax.html> shows fallback approaches for IE6+.
-
-</details>
-
-<details>
-  <summary><b>Local file in a PhotoShop or InDesign plugin</b> (click to show)</summary>
-
-`readFile` wraps the `File` logic in Photoshop and other ExtendScript targets.
-The specified path should be an absolute path:
-
-```js
-#include "xlsx.extendscript.js"
-
-/* Read test.xlsx from the Documents folder */
-var workbook = XLSX.readFile(Folder.myDocuments + "/test.xlsx");
-```
-
-The [`extendscript` demo](demos/extendscript/) includes a more complex example.
-
-</details>
-
-<details>
-  <summary><b>Local file in an Electron app</b> (click to show)</summary>
-
-`readFile` can be used in the renderer process:
-
-```js
-/* From the renderer process */
-var XLSX = require("xlsx");
-
-var workbook = XLSX.readFile(path);
-```
-
-Electron APIs have changed over time.  The [`electron` demo](demos/electron/)
-shows a complete example and details the required version-specific settings.
-
-</details>
-
-<details>
-  <summary><b>Local file in a mobile app with React Native</b> (click to show)</summary>
-
-The [`react` demo](demos/react) includes a sample React Native app.
-
-Since React Native does not provide a way to read files from the filesystem, a
-third-party library must be used.  The following libraries have been tested:
-
-- [`react-native-file-access`](https://npm.im/react-native-file-access)
-
-The `base64` encoding returns strings compatible with the `base64` type:
-
-```js
-import XLSX from "xlsx";
-import { FileSystem } from "react-native-file-access";
-
-const b64 = await FileSystem.readFile(path, "base64");
-/* b64 is a base64 string */
-const workbook = XLSX.read(b64, {type: "base64"});
-```
-
-- [`react-native-fs`](https://npm.im/react-native-fs)
-
-The `ascii` encoding returns binary strings compatible with the `binary` type:
-
-```js
-import XLSX from "xlsx";
-import { readFile } from "react-native-fs";
-
-const bstr = await readFile(path, "ascii");
-/* bstr is a binary string */
-const workbook = XLSX.read(bstr, {type: "binary"});
-```
-
-</details>
-
-<details>
-  <summary><b>NodeJS Server File Uploads</b> (click to show)</summary>
-
-`read` can accept a NodeJS buffer.  `readFile` can read files generated by a
-HTTP POST request body parser like [`formidable`](https://npm.im/formidable):
-
-```js
-const XLSX = require("xlsx");
-const http = require("http");
-const formidable = require("formidable");
-
-const server = http.createServer((req, res) => {
-  const form = new formidable.IncomingForm();
-  form.parse(req, (err, fields, files) => {
-    /* grab the first file */
-    const f = Object.entries(files)[0][1];
-    const path = f.filepath;
-    const workbook = XLSX.readFile(path);
-
-    /* DO SOMETHING WITH workbook HERE */
-  });
-}).listen(process.env.PORT || 7262);
-```
-
-The [`server` demo](demos/server) has more advanced examples.
-
-</details>
-
-<details>
-  <summary><b>Download files in a NodeJS process</b> (click to show)</summary>
-
-Node 17.5 and 18.0 have native support for fetch:
-
-```js
-const XLSX = require("xlsx");
-
-const data = await (await fetch(url)).arrayBuffer();
-/* data is an ArrayBuffer */
-const workbook = XLSX.read(data);
-```
-
-For broader compatibility, third-party modules are recommended.
-
-[`request`](https://npm.im/request) requires a `null` encoding to yield Buffers:
-
-```js
-var XLSX = require("xlsx");
-var request = require("request");
-
-request({url: url, encoding: null}, function(err, resp, body) {
-  var workbook = XLSX.read(body);
-
-  /* DO SOMETHING WITH workbook HERE */
-});
-```
-
-[`axios`](https://npm.im/axios) works the same way in browser and in NodeJS:
-
-```js
-const XLSX = require("xlsx");
-const axios = require("axios");
-
-(async() => {
-  const res = await axios.get(url, {responseType: "arraybuffer"});
-  /* res.data is a Buffer */
-  const workbook = XLSX.read(res.data);
-
-  /* DO SOMETHING WITH workbook HERE */
-})();
-```
-
-</details>
-
-<details>
-  <summary><b>Download files in an Electron app</b> (click to show)</summary>
-
-The `net` module in the main process can make HTTP/HTTPS requests to external
-resources.  Responses should be manually concatenated using `Buffer.concat`:
-
-```js
-const XLSX = require("xlsx");
-const { net } = require("electron");
-
-const req = net.request(url);
-req.on("response", (res) => {
-  const bufs = []; // this array will collect all of the buffers
-  res.on("data", (chunk) => { bufs.push(chunk); });
-  res.on("end", () => {
-    const workbook = XLSX.read(Buffer.concat(bufs));
-
-    /* DO SOMETHING WITH workbook HERE */
-  });
-});
-req.end();
-```
-
-</details>
-
-<details>
-  <summary><b>Readable Streams in NodeJS</b> (click to show)</summary>
-
-When dealing with Readable Streams, the easiest approach is to buffer the stream
-and process the whole thing at the end:
-
-```js
-var fs = require("fs");
-var XLSX = require("xlsx");
-
-function process_RS(stream, cb) {
-  var buffers = [];
-  stream.on("data", function(data) { buffers.push(data); });
-  stream.on("end", function() {
-    var buffer = Buffer.concat(buffers);
-    var workbook = XLSX.read(buffer, {type:"buffer"});
-
-    /* DO SOMETHING WITH workbook IN THE CALLBACK */
-    cb(workbook);
-  });
-}
-```
-
-</details>
-
-<details>
-  <summary><b>ReadableStream in the browser</b> (click to show)</summary>
-
-When dealing with `ReadableStream`, the easiest approach is to buffer the stream
-and process the whole thing at the end:
-
-```js
-// XLSX is a global from the standalone script
-
-async function process_RS(stream) {
-  /* collect data */
-  const buffers = [];
-  const reader = stream.getReader();
-  for(;;) {
-    const res = await reader.read();
-    if(res.value) buffers.push(res.value);
-    if(res.done) break;
-  }
-
-  /* concat */
-  const out = new Uint8Array(buffers.reduce((acc, v) => acc + v.length, 0));
-
-  let off = 0;
-  for(const u8 of buffers) {
-    out.set(u8, off);
-    off += u8.length;
-  }
-
-  return out;
-}
-
-const data = await process_RS(stream);
-/* data is Uint8Array */
-const workbook = XLSX.read(data, {type: 'array'});
-```
-
-</details>
-
-More detailed examples are covered in the [included demos](demos/)
-
diff --git a/docbits/22_ingress.md b/docbits/22_ingress.md
deleted file mode 100644
index 0b58a00..0000000
--- a/docbits/22_ingress.md
+++ /dev/null
@@ -1,336 +0,0 @@
-### Processing JSON and JS Data
-
-JSON and JS data tend to represent single worksheets.  This section will use a
-few utility functions to generate workbooks.
-
-_Create a new Workbook_
-
-```js
-var workbook = XLSX.utils.book_new();
-```
-
-The `book_new` utility function creates an empty workbook with no worksheets.
-
-Spreadsheet software generally require at least one worksheet and enforce the
-requirement in the user interface.  This library enforces the requirement at
-write time, throwing errors if an empty workbook is passed to write functions.
-
-
-**API**
-
-_Create a worksheet from an array of arrays of JS values_
-
-```js
-var worksheet = XLSX.utils.aoa_to_sheet(aoa, opts);
-```
-
-The `aoa_to_sheet` utility function walks an "array of arrays" in row-major
-order, generating a worksheet object.  The following snippet generates a sheet
-with cell `A1` set to the string `A1`, cell `B1` set to `B1`, etc:
-
-```js
-var worksheet = XLSX.utils.aoa_to_sheet([
-  ["A1", "B1", "C1"],
-  ["A2", "B2", "C2"],
-  ["A3", "B3", "C3"]
-]);
-```
-
-["Array of Arrays Input"](#array-of-arrays-input) describes the function and the
-optional `opts` argument in more detail.
-
-
-_Create a worksheet from an array of JS objects_
-
-```js
-var worksheet = XLSX.utils.json_to_sheet(jsa, opts);
-```
-
-The `json_to_sheet` utility function walks an array of JS objects in order,
-generating a worksheet object.  By default, it will generate a header row and
-one row per object in the array.  The optional `opts` argument has settings to
-control the column order and header output.
-
-["Array of Objects Input"](#array-of-objects-input) describes the function and
-the optional `opts` argument in more detail.
-
-**Examples**
-
-["Zen of SheetJS"](#the-zen-of-sheetjs) contains a detailed example "Get Data
-from a JSON Endpoint and Generate a Workbook"
-
-
-[`x-spreadsheet`](https://github.com/myliang/x-spreadsheet) is an interactive
-data grid for previewing and modifying structured data in the web browser.  The
-[`xspreadsheet` demo](/demos/xspreadsheet) includes a sample script with the
-`xtos` function for converting from x-spreadsheet data object to a workbook.
-<https://oss.sheetjs.com/sheetjs/x-spreadsheet> is a live demo.
-
-<details>
-  <summary><b>Records from a database query (SQL or no-SQL)</b> (click to show)</summary>
-
-The [`database` demo](/demos/database/) includes examples of working with
-databases and query results.
-
-</details>
-
-
-<details>
-  <summary><b>Numerical Computations with TensorFlow.js</b> (click to show)</summary>
-
-[`@tensorflow/tfjs`](@tensorflow/tfjs) and other libraries expect data in simple
-arrays, well-suited for worksheets where each column is a data vector.  That is
-the transpose of how most people use spreadsheets, where each row is a vector.
-
-When recovering data from `tfjs`, the returned data points are stored in a typed
-array.  An array of arrays can be constructed with loops. `Array#unshift` can
-prepend a title row before the conversion:
-
-```js
-const XLSX = require("xlsx");
-const tf = require('@tensorflow/tfjs');
-
-/* suppose xs and ys are vectors (1D tensors) -> tfarr will be a typed array */
-const tfdata = tf.stack([xs, ys]).transpose();
-const shape = tfdata.shape;
-const tfarr = tfdata.dataSync();
-
-/* construct the array of arrays */
-const aoa = [];
-for(let j = 0; j < shape[0]; ++j) {
-  aoa[j] = [];
-  for(let i = 0; i < shape[1]; ++i) aoa[j][i] = tfarr[j * shape[1] + i];
-}
-/* add headers to the top */
-aoa.unshift(["x", "y"]);
-
-/* generate worksheet */
-const worksheet = XLSX.utils.aoa_to_sheet(aoa);
-```
-
-The [`array` demo](demos/array/) shows a complete example.
-
-</details>
-
-
-### Processing HTML Tables
-
-**API**
-
-_Create a worksheet by scraping an HTML TABLE in the page_
-
-```js
-var worksheet = XLSX.utils.table_to_sheet(dom_element, opts);
-```
-
-The `table_to_sheet` utility function takes a DOM TABLE element and iterates
-through the rows to generate a worksheet.  The `opts` argument is optional.
-["HTML Table Input"](#html-table-input) describes the function in more detail.
-
-
-
-_Create a workbook by scraping an HTML TABLE in the page_
-
-```js
-var workbook = XLSX.utils.table_to_book(dom_element, opts);
-```
-
-The `table_to_book` utility function follows the same logic as `table_to_sheet`.
-After generating a worksheet, it creates a blank workbook and appends the
-spreadsheet.
-
-The options argument supports the same options as `table_to_sheet`, with the
-addition of a `sheet` property to control the worksheet name.  If the property
-is missing or no options are specified, the default name `Sheet1` is used.
-
-**Examples**
-
-Here are a few common scenarios (click on each subtitle to see the code):
-
-<details>
-  <summary><b>HTML TABLE element in a webpage</b> (click to show)</summary>
-
-```html
-<!-- include the standalone script and shim.  this uses the UNPKG CDN -->
-<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/shim.min.js"></script>
-<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
-
-<!-- example table with id attribute -->
-<table id="tableau">
-  <tr><td>Sheet</td><td>JS</td></tr>
-  <tr><td>12345</td><td>67</td></tr>
-</table>
-
-<!-- this block should appear after the table HTML and the standalone script -->
-<script type="text/javascript">
-  var workbook = XLSX.utils.table_to_book(document.getElementById("tableau"));
-
-  /* DO SOMETHING WITH workbook HERE */
-</script>
-```
-
-Multiple tables on a web page can be converted to individual worksheets:
-
-```js
-/* create new workbook */
-var workbook = XLSX.utils.book_new();
-
-/* convert table "table1" to worksheet named "Sheet1" */
-var sheet1 = XLSX.utils.table_to_sheet(document.getElementById("table1"));
-XLSX.utils.book_append_sheet(workbook, sheet1, "Sheet1");
-
-/* convert table "table2" to worksheet named "Sheet2" */
-var sheet2 = XLSX.utils.table_to_sheet(document.getElementById("table2"));
-XLSX.utils.book_append_sheet(workbook, sheet2, "Sheet2");
-
-/* workbook now has 2 worksheets */
-```
-
-Alternatively, the HTML code can be extracted and parsed:
-
-```js
-var htmlstr = document.getElementById("tableau").outerHTML;
-var workbook = XLSX.read(htmlstr, {type:"string"});
-```
-
-</details>
-
-<details>
-  <summary><b>Chrome/Chromium Extension</b> (click to show)</summary>
-
-The [`chrome` demo](demos/chrome/) shows a complete example and details the
-required permissions and other settings.
-
-In an extension, it is recommended to generate the workbook in a content script
-and pass the object back to the extension:
-
-```js
-/* in the worker script */
-chrome.runtime.onMessage.addListener(function(msg, sender, cb) {
-  /* pass a message like { sheetjs: true } from the extension to scrape */
-  if(!msg || !msg.sheetjs) return;
-  /* create a new workbook */
-  var workbook = XLSX.utils.book_new();
-  /* loop through each table element */
-  var tables = document.getElementsByTagName("table")
-  for(var i = 0; i < tables.length; ++i) {
-    var worksheet = XLSX.utils.table_to_sheet(tables[i]);
-    XLSX.utils.book_append_sheet(workbook, worksheet, "Table" + i);
-  }
-  /* pass back to the extension */
-  return cb(workbook);
-});
-```
-
-</details>
-
-<details>
-  <summary><b>Server-Side HTML Tables with Headless Chrome</b> (click to show)</summary>
-
-The [`headless` demo](demos/headless/) includes a complete demo to convert HTML
-files to XLSB workbooks.  The core idea is to add the script to the page, parse
-the table in the page context, generate a `base64` workbook and send it back
-for further processing:
-
-```js
-const XLSX = require("xlsx");
-const { readFileSync } = require("fs"), puppeteer = require("puppeteer");
-
-const url = `https://sheetjs.com/demos/table`;
-
-/* get the standalone build source (node_modules/xlsx/dist/xlsx.full.min.js) */
-const lib = readFileSync(require.resolve("xlsx/dist/xlsx.full.min.js"), "utf8");
-
-(async() => {
-  /* start browser and go to web page */
-  const browser = await puppeteer.launch();
-  const page = await browser.newPage();
-  await page.goto(url, {waitUntil: "networkidle2"});
-
-  /* inject library */
-  await page.addScriptTag({content: lib});
-
-  /* this function `s5s` will be called by the script below, receiving the Base64-encoded file */
-  await page.exposeFunction("s5s", async(b64) => {
-    const workbook = XLSX.read(b64, {type: "base64" });
-
-    /* DO SOMETHING WITH workbook HERE */
-  });
-
-  /* generate XLSB file in webpage context and send back result */
-  await page.addScriptTag({content: `
-    /* call table_to_book on first table */
-    var workbook = XLSX.utils.table_to_book(document.querySelector("TABLE"));
-
-    /* generate XLSX file */
-    var b64 = XLSX.write(workbook, {type: "base64", bookType: "xlsb"});
-
-    /* call "s5s" hook exposed from the node process */
-    window.s5s(b64);
-  `});
-
-  /* cleanup */
-  await browser.close();
-})();
-```
-
-</details>
-
-<details>
-  <summary><b>Server-Side HTML Tables with Headless WebKit</b> (click to show)</summary>
-
-The [`headless` demo](demos/headless/) includes a complete demo to convert HTML
-files to XLSB workbooks using [PhantomJS](https://phantomjs.org/). The core idea
-is to add the script to the page, parse the table in the page context, generate
-a `binary` workbook and send it back for further processing:
-
-```js
-var XLSX = require('xlsx');
-var page = require('webpage').create();
-
-/* this code will be run in the page */
-var code = [ "function(){",
-  /* call table_to_book on first table */
-  "var wb = XLSX.utils.table_to_book(document.body.getElementsByTagName('table')[0]);",
-
-  /* generate XLSB file and return binary string */
-  "return XLSX.write(wb, {type: 'binary', bookType: 'xlsb'});",
-"}" ].join("");
-
-page.open('https://sheetjs.com/demos/table', function() {
-  /* Load the browser script from the UNPKG CDN */
-  page.includeJs("https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js", function() {
-    /* The code will return an XLSB file encoded as binary string */
-    var bin = page.evaluateJavaScript(code);
-
-    var workbook = XLSX.read(bin, {type: "binary"});
-    /* DO SOMETHING WITH workbook HERE */
-
-    phantom.exit();
-  });
-});
-```
-
-</details>
-
-<details>
-  <summary><b>NodeJS HTML Tables without a browser</b> (click to show)</summary>
-
-NodeJS does not include a DOM implementation and Puppeteer requires a hefty
-Chromium build.  [`jsdom`](https://npm.im/jsdom) is a lightweight alternative:
-
-```js
-const XLSX = require("xlsx");
-const { readFileSync } = require("fs");
-const { JSDOM } = require("jsdom");
-
-/* obtain HTML string.  This example reads from test.html */
-const html_str = fs.readFileSync("test.html", "utf8");
-/* get first TABLE element */
-const doc = new JSDOM(html_str).window.document.querySelector("table");
-/* generate workbook */
-const workbook = XLSX.utils.table_to_book(doc);
-```
-
-</details>
-
diff --git a/docbits/25_manip.md b/docbits/25_manip.md
deleted file mode 100644
index 252978e..0000000
--- a/docbits/25_manip.md
+++ /dev/null
@@ -1,136 +0,0 @@
-## Processing Data
-
-The ["Common Spreadsheet Format"](#common-spreadsheet-format) is a simple object
-representation of the core concepts of a workbook.  The utility functions work
-with the object representation and are intended to handle common use cases.
-
-### Modifying Workbook Structure
-
-**API**
-
-_Append a Worksheet to a Workbook_
-
-```js
-XLSX.utils.book_append_sheet(workbook, worksheet, sheet_name);
-```
-
-The `book_append_sheet` utility function appends a worksheet to the workbook.
-The third argument specifies the desired worksheet name. Multiple worksheets can
-be added to a workbook by calling the function multiple times.  If the worksheet
-name is already used in the workbook, it will throw an error.
-
-_Append a Worksheet to a Workbook and find a unique name_
-
-```js
-var new_name = XLSX.utils.book_append_sheet(workbook, worksheet, name, true);
-```
-
-If the fourth argument is `true`, the function will start with the specified
-worksheet name.  If the sheet name exists in the workbook, a new worksheet name
-will be chosen by finding the name stem and incrementing the counter:
-
-```js
-XLSX.utils.book_append_sheet(workbook, sheetA, "Sheet2", true); // Sheet2
-XLSX.utils.book_append_sheet(workbook, sheetB, "Sheet2", true); // Sheet3
-XLSX.utils.book_append_sheet(workbook, sheetC, "Sheet2", true); // Sheet4
-XLSX.utils.book_append_sheet(workbook, sheetD, "Sheet2", true); // Sheet5
-```
-
-_List the Worksheet names in tab order_
-
-```js
-var wsnames = workbook.SheetNames;
-```
-
-The `SheetNames` property of the workbook object is a list of the worksheet
-names in "tab order".  API functions will look at this array.
-
-_Replace a Worksheet in place_
-
-```js
-workbook.Sheets[sheet_name] = new_worksheet;
-```
-
-The `Sheets` property of the workbook object is an object whose keys are names
-and whose values are worksheet objects.  By reassigning to a property of the
-`Sheets` object, the worksheet object can be changed without disrupting the
-rest of the worksheet structure.
-
-**Examples**
-
-<details>
-  <summary><b>Add a new worksheet to a workbook</b> (click to show)</summary>
-
-This example uses [`XLSX.utils.aoa_to_sheet`](#array-of-arrays-input).
-
-```js
-var ws_name = "SheetJS";
-
-/* Create worksheet */
-var ws_data = [
-  [ "S", "h", "e", "e", "t", "J", "S" ],
-  [  1 ,  2 ,  3 ,  4 ,  5 ]
-];
-var ws = XLSX.utils.aoa_to_sheet(ws_data);
-
-/* Add the worksheet to the workbook */
-XLSX.utils.book_append_sheet(wb, ws, ws_name);
-```
-
-</details>
-
-### Modifying Cell Values
-
-**API**
-
-_Modify a single cell value in a worksheet_
-
-```js
-XLSX.utils.sheet_add_aoa(worksheet, [[new_value]], { origin: address });
-```
-
-_Modify multiple cell values in a worksheet_
-
-```js
-XLSX.utils.sheet_add_aoa(worksheet, aoa, opts);
-```
-
-The `sheet_add_aoa` utility function modifies cell values in a worksheet.  The
-first argument is the worksheet object.  The second argument is an array of
-arrays of values.  The `origin` key of the third argument controls where cells
-will be written.  The following snippet sets `B3=1` and `E5="abc"`:
-
-```js
-XLSX.utils.sheet_add_aoa(worksheet, [
-  [1],                             // <-- Write 1 to cell B3
-  ,                                // <-- Do nothing in row 4
-  [/*B5*/, /*C5*/, /*D5*/, "abc"]  // <-- Write "abc" to cell E5
-], { origin: "B3" });
-```
-
-["Array of Arrays Input"](#array-of-arrays-input) describes the function and the
-optional `opts` argument in more detail.
-
-**Examples**
-
-<details>
-  <summary><b>Appending rows to a worksheet</b> (click to show)</summary>
-
-The special origin value `-1` instructs `sheet_add_aoa` to start in column A of
-the row after the last row in the range, appending the data:
-
-```js
-XLSX.utils.sheet_add_aoa(worksheet, [
-  ["first row after data", 1],
-  ["second row after data", 2]
-], { origin: -1 });
-```
-
-</details>
-
-
-### Modifying Other Worksheet / Workbook / Cell Properties
-
-The ["Common Spreadsheet Format"](#common-spreadsheet-format) section describes
-the object structures in greater detail.
-
diff --git a/docbits/30_export.md b/docbits/30_export.md
deleted file mode 100644
index 5471a27..0000000
--- a/docbits/30_export.md
+++ /dev/null
@@ -1,317 +0,0 @@
-## Packaging and Releasing Data
-
-### Writing Workbooks
-
-**API**
-
-_Generate spreadsheet bytes (file) from data_
-
-```js
-var data = XLSX.write(workbook, opts);
-```
-
-The `write` method attempts to package data from the workbook into a file in
-memory.  By default, XLSX files are generated, but that can be controlled with
-the `bookType` property of the `opts` argument.  Based on the `type` option,
-the data can be stored as a "binary string", JS string, `Uint8Array` or Buffer.
-
-The second `opts` argument is required.  ["Writing Options"](#writing-options)
-covers the supported properties and behaviors.
-
-_Generate and attempt to save file_
-
-```js
-XLSX.writeFile(workbook, filename, opts);
-```
-
-The `writeFile` method packages the data and attempts to save the new file.  The
-export file format is determined by the extension of `filename` (`SheetJS.xlsx`
-signals XLSX export, `SheetJS.xlsb` signals XLSB export, etc).
-
-The `writeFile` method uses platform-specific APIs to initiate the file save. In
-NodeJS, `fs.readFileSync` can create a file.  In the web browser, a download is
-attempted using the HTML5 `download` attribute, with fallbacks for IE.
-
-_Generate and attempt to save an XLSX file_
-
-```js
-XLSX.writeFileXLSX(workbook, filename, opts);
-```
-
-The `writeFile` method embeds a number of different export functions.  This is
-great for developer experience but not amenable to tree shaking using the
-current developer tools.  When only XLSX exports are needed, this method avoids
-referencing the other export functions.
-
-The second `opts` argument is optional.  ["Writing Options"](#writing-options)
-covers the supported properties and behaviors.
-
-**Examples**
-
-<details>
-  <summary><b>Local file in a NodeJS server</b> (click to show)</summary>
-
-`writeFile` uses `fs.writeFileSync` in server environments:
-
-```js
-var XLSX = require("xlsx");
-
-/* output format determined by filename */
-XLSX.writeFile(workbook, "out.xlsb");
-```
-
-For Node ESM, the `writeFile` helper is not enabled. Instead, `fs.writeFileSync`
-should be used to write the file data to a `Buffer` for use with `XLSX.write`:
-
-```js
-import { writeFileSync } from "fs";
-import { write } from "xlsx/xlsx.mjs";
-
-const buf = write(workbook, {type: "buffer", bookType: "xlsb"});
-/* buf is a Buffer */
-const workbook = writeFileSync("out.xlsb", buf);
-```
-
-</details>
-
-<details>
-  <summary><b>Local file in a Deno application</b> (click to show)</summary>
-
-`writeFile` uses `Deno.writeFileSync` under the hood:
-
-```js
-// @deno-types="https://deno.land/x/sheetjs/types/index.d.ts"
-import * as XLSX from 'https://deno.land/x/sheetjs/xlsx.mjs'
-
-XLSX.writeFile(workbook, "test.xlsx");
-```
-
-Applications writing files must be invoked with the `--allow-write` flag.  The
-[`deno` demo](demos/deno/) has more examples
-
-</details>
-
-<details>
-  <summary><b>Local file in a PhotoShop or InDesign plugin</b> (click to show)</summary>
-
-`writeFile` wraps the `File` logic in Photoshop and other ExtendScript targets.
-The specified path should be an absolute path:
-
-```js
-#include "xlsx.extendscript.js"
-
-/* output format determined by filename */
-XLSX.writeFile(workbook, "out.xlsx");
-/* at this point, out.xlsx is a file that you can distribute */
-```
-
-The [`extendscript` demo](demos/extendscript/) includes a more complex example.
-
-</details>
-
-<details>
-  <summary><b>Download a file in the browser to the user machine</b> (click to show)</summary>
-
-`XLSX.writeFile` wraps a few techniques for triggering a file save:
-
-- `URL` browser API creates an object URL for the file, which the library uses
-  by creating a link and forcing a click. It is supported in modern browsers.
-- `msSaveBlob` is an IE10+ API for triggering a file save.
-- `IE_FileSave` uses VBScript and ActiveX to write a file in IE6+ for Windows
-  XP and Windows 7.  The shim must be included in the containing HTML page.
-
-There is no standard way to determine if the actual file has been downloaded.
-
-```js
-/* output format determined by filename */
-XLSX.writeFile(workbook, "out.xlsb");
-/* at this point, out.xlsb will have been downloaded */
-```
-
-</details>
-
-<details>
-  <summary><b>Download a file in legacy browsers</b> (click to show)</summary>
-
-`XLSX.writeFile` techniques work for most modern browsers as well as older IE.
-For much older browsers, there are workarounds implemented by wrapper libraries.
-
-[`FileSaver.js`](https://github.com/eligrey/FileSaver.js/) implements `saveAs`.
-Note: `XLSX.writeFile` will automatically call `saveAs` if available.
-
-```js
-/* bookType can be any supported output type */
-var wopts = { bookType:"xlsx", bookSST:false, type:"array" };
-
-var wbout = XLSX.write(workbook,wopts);
-
-/* the saveAs call downloads a file on the local machine */
-saveAs(new Blob([wbout],{type:"application/octet-stream"}), "test.xlsx");
-```
-
-[`Downloadify`](https://github.com/dcneiner/downloadify) uses a Flash SWF button
-to generate local files, suitable for environments where ActiveX is unavailable:
-
-```js
-Downloadify.create(id,{
-  /* other options are required! read the downloadify docs for more info */
-  filename: "test.xlsx",
-  data: function() { return XLSX.write(wb, {bookType:"xlsx", type:"base64"}); },
-  append: false,
-  dataType: "base64"
-});
-```
-
-The [`oldie` demo](demos/oldie/) shows an IE-compatible fallback scenario.
-
-</details>
-
-<details>
-  <summary><b>Browser upload file (ajax)</b> (click to show)</summary>
-
-A complete example using XHR is [included in the XHR demo](demos/xhr/), along
-with examples for fetch and wrapper libraries.  This example assumes the server
-can handle Base64-encoded files (see the demo for a basic nodejs server):
-
-```js
-/* in this example, send a base64 string to the server */
-var wopts = { bookType:"xlsx", bookSST:false, type:"base64" };
-
-var wbout = XLSX.write(workbook,wopts);
-
-var req = new XMLHttpRequest();
-req.open("POST", "/upload", true);
-var formdata = new FormData();
-formdata.append("file", "test.xlsx"); // <-- server expects `file` to hold name
-formdata.append("data", wbout); // <-- `data` holds the base64-encoded data
-req.send(formdata);
-```
-
-</details>
-
-<details>
-  <summary><b>PhantomJS (Headless Webkit) File Generation</b> (click to show)</summary>
-
-The [`headless` demo](demos/headless/) includes a complete demo to convert HTML
-files to XLSB workbooks using [PhantomJS](https://phantomjs.org/). PhantomJS
-`fs.write` supports writing files from the main process but has a different
-interface from the NodeJS `fs` module:
-
-```js
-var XLSX = require('xlsx');
-var fs = require('fs');
-
-/* generate a binary string */
-var bin = XLSX.write(workbook, { type:"binary", bookType: "xlsx" });
-/* write to file */
-fs.write("test.xlsx", bin, "wb");
-```
-
-Note: The section ["Processing HTML Tables"](#processing-html-tables) shows how
-to generate a workbook from HTML tables in a page in "Headless WebKit".
-
-</details>
-
-
-
-The [included demos](demos/) cover mobile apps and other special deployments.
-
-### Writing Examples
-
-- <http://sheetjs.com/demos/table.html> exporting an HTML table
-- <http://sheetjs.com/demos/writexlsx.html> generates a simple file
-
-### Streaming Write
-
-The streaming write functions are available in the `XLSX.stream` object.  They
-take the same arguments as the normal write functions but return a NodeJS
-Readable Stream.
-
-- `XLSX.stream.to_csv` is the streaming version of `XLSX.utils.sheet_to_csv`.
-- `XLSX.stream.to_html` is the streaming version of `XLSX.utils.sheet_to_html`.
-- `XLSX.stream.to_json` is the streaming version of `XLSX.utils.sheet_to_json`.
-
-<details>
-  <summary><b>nodejs convert to CSV and write file</b> (click to show)</summary>
-
-```js
-var output_file_name = "out.csv";
-var stream = XLSX.stream.to_csv(worksheet);
-stream.pipe(fs.createWriteStream(output_file_name));
-```
-
-</details>
-
-<details>
-  <summary><b>nodejs write JSON stream to screen</b> (click to show)</summary>
-
-```js
-/* to_json returns an object-mode stream */
-var stream = XLSX.stream.to_json(worksheet, {raw:true});
-
-/* the following stream converts JS objects to text via JSON.stringify */
-var conv = new Transform({writableObjectMode:true});
-conv._transform = function(obj, e, cb){ cb(null, JSON.stringify(obj) + "\n"); };
-
-stream.pipe(conv); conv.pipe(process.stdout);
-```
-
-</details>
-
-<details>
-  <summary><b>Exporting NUMBERS files</b> (click to show)</summary>
-
-The NUMBERS writer requires a fairly large base.  The supplementary `xlsx.zahl`
-scripts provide support.  `xlsx.zahl.js` is designed for standalone and NodeJS
-use, while `xlsx.zahl.mjs` is suitable for ESM.
-
-_Browser_
-
-```html
-<meta charset="utf8">
-<script src="xlsx.full.min.js"></script>
-<script src="xlsx.zahl.js"></script>
-<script>
-var wb = XLSX.utils.book_new(); var ws = XLSX.utils.aoa_to_sheet([
-  ["SheetJS", "<3","விரிதாள்"],
-  [72,,"Arbeitsblätter"],
-  [,62,"数据"],
-  [true,false,],
-]); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
-XLSX.writeFile(wb, "textport.numbers", {numbers: XLSX_ZAHL, compression: true});
-</script>
-```
-
-_Node_
-
-```js
-var XLSX = require("./xlsx.flow");
-var XLSX_ZAHL = require("./dist/xlsx.zahl");
-var wb = XLSX.utils.book_new(); var ws = XLSX.utils.aoa_to_sheet([
-  ["SheetJS", "<3","விரிதாள்"],
-  [72,,"Arbeitsblätter"],
-  [,62,"数据"],
-  [true,false,],
-]); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
-XLSX.writeFile(wb, "textport.numbers", {numbers: XLSX_ZAHL, compression: true});
-```
-
-_Deno_
-
-```ts
-import * as XLSX from './xlsx.mjs';
-import XLSX_ZAHL from './dist/xlsx.zahl.mjs';
-
-var wb = XLSX.utils.book_new(); var ws = XLSX.utils.aoa_to_sheet([
-  ["SheetJS", "<3","விரிதாள்"],
-  [72,,"Arbeitsblätter"],
-  [,62,"数据"],
-  [true,false,],
-]); XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
-XLSX.writeFile(wb, "textports.numbers", {numbers: XLSX_ZAHL, compression: true});
-```
-
-</details>
-
-<https://github.com/sheetjs/sheetaki> pipes write streams to nodejs response.
-
diff --git a/docbits/32_egress.md b/docbits/32_egress.md
deleted file mode 100644
index 37ea3dc..0000000
--- a/docbits/32_egress.md
+++ /dev/null
@@ -1,304 +0,0 @@
-### Generating JSON and JS Data
-
-JSON and JS data tend to represent single worksheets. The utility functions in
-this section work with single worksheets.
-
-The ["Common Spreadsheet Format"](#common-spreadsheet-format) section describes
-the object structure in more detail.  `workbook.SheetNames` is an ordered list
-of the worksheet names.  `workbook.Sheets` is an object whose keys are sheet
-names and whose values are worksheet objects.
-
-The "first worksheet" is stored at `workbook.Sheets[workbook.SheetNames[0]]`.
-
-**API**
-
-_Create an array of JS objects from a worksheet_
-
-```js
-var jsa = XLSX.utils.sheet_to_json(worksheet, opts);
-```
-
-_Create an array of arrays of JS values from a worksheet_
-
-```js
-var aoa = XLSX.utils.sheet_to_json(worksheet, {...opts, header: 1});
-```
-
-The `sheet_to_json` utility function walks a workbook in row-major order,
-generating an array of objects.  The second `opts` argument controls a number of
-export decisions including the type of values (JS values or formatted text). The
-["JSON"](#json) section describes the argument in more detail.
-
-By default, `sheet_to_json` scans the first row and uses the values as headers.
-With the `header: 1` option, the function exports an array of arrays of values.
-
-**Examples**
-
-[`x-spreadsheet`](https://github.com/myliang/x-spreadsheet) is an interactive
-data grid for previewing and modifying structured data in the web browser.  The
-[`xspreadsheet` demo](/demos/xspreadsheet) includes a sample script with the
-`stox` function for converting from a workbook to x-spreadsheet data object.
-<https://oss.sheetjs.com/sheetjs/x-spreadsheet> is a live demo.
-
-<details>
-  <summary><b>Previewing data in a React data grid</b> (click to show)</summary>
-
-[`react-data-grid`](https://npm.im/react-data-grid) is a data grid tailored for
-react.  It expects two properties: `rows` of data objects and `columns` which
-describe the columns.  For the purposes of massaging the data to fit the react
-data grid API it is easiest to start from an array of arrays.
-
-This demo starts by fetching a remote file and using `XLSX.read` to extract:
-
-```js
-import { useEffect, useState } from "react";
-import DataGrid from "react-data-grid";
-import { read, utils } from "xlsx";
-
-const url = "https://oss.sheetjs.com/test_files/RkNumber.xls";
-
-export default function App() {
-  const [columns, setColumns] = useState([]);
-  const [rows, setRows] = useState([]);
-  useEffect(() => {(async () => {
-    const wb = read(await (await fetch(url)).arrayBuffer(), { WTF: 1 });
-
-    /* use sheet_to_json with header: 1 to generate an array of arrays */
-    const data = utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]], { header: 1 });
-
-    /* see react-data-grid docs to understand the shape of the expected data */
-    setColumns(data[0].map((r) => ({ key: r, name: r })));
-    setRows(data.slice(1).map((r) => r.reduce((acc, x, i) => {
-      acc[data[0][i]] = x;
-      return acc;
-    }, {})));
-  })(); });
-
-  return <DataGrid columns={columns} rows={rows} />;
-}
-```
-
-</details>
-
-<details>
-  <summary><b>Previewing data in a VueJS data grid</b> (click to show)</summary>
-
-[`vue3-table-lite`](https://github.com/linmasahiro/vue3-table-lite) is a simple
-VueJS 3 data table.  It is featured [in the VueJS demo](/demos/vue/modify/).
-
-</details>
-
-<details>
-  <summary><b>Populating a database (SQL or no-SQL)</b> (click to show)</summary>
-
-The [`database` demo](/demos/database/) includes examples of working with
-databases and query results.
-
-</details>
-
-<details>
-  <summary><b>Numerical Computations with TensorFlow.js</b> (click to show)</summary>
-
-[`@tensorflow/tfjs`](@tensorflow/tfjs) and other libraries expect data in simple
-arrays, well-suited for worksheets where each column is a data vector.  That is
-the transpose of how most people use spreadsheets, where each row is a vector.
-
-A single `Array#map` can pull individual named rows from `sheet_to_json` export:
-
-```js
-const XLSX = require("xlsx");
-const tf = require('@tensorflow/tfjs');
-
-const key = "age"; // this is the field we want to pull
-const ages = XLSX.utils.sheet_to_json(worksheet).map(r => r[key]);
-const tf_data = tf.tensor1d(ages);
-```
-
-All fields can be processed at once using a transpose of the 2D tensor generated
-with the `sheet_to_json` export with `header: 1`. The first row, if it contains
-header labels, should be removed with a slice:
-
-```js
-const XLSX = require("xlsx");
-const tf = require('@tensorflow/tfjs');
-
-/* array of arrays of the data starting on the second row */
-const aoa = XLSX.utils.sheet_to_json(worksheet, {header: 1}).slice(1);
-/* dataset in the "correct orientation" */
-const tf_dataset = tf.tensor2d(aoa).transpose();
-/* pull out each dataset with a slice */
-const tf_field0 = tf_dataset.slice([0,0], [1,tensor.shape[1]]).flatten();
-const tf_field1 = tf_dataset.slice([1,0], [1,tensor.shape[1]]).flatten();
-```
-
-The [`array` demo](demos/array/) shows a complete example.
-
-</details>
-
-
-### Generating HTML Tables
-
-**API**
-
-_Generate HTML Table from Worksheet_
-
-```js
-var html = XLSX.utils.sheet_to_html(worksheet);
-```
-
-The `sheet_to_html` utility function generates HTML code based on the worksheet
-data.  Each cell in the worksheet is mapped to a `<TD>` element.  Merged cells
-in the worksheet are serialized by setting `colspan` and `rowspan` attributes.
-
-**Examples**
-
-The `sheet_to_html` utility function generates HTML code that can be added to
-any DOM element by setting the `innerHTML`:
-
-```js
-var container = document.getElementById("tavolo");
-container.innerHTML = XLSX.utils.sheet_to_html(worksheet);
-```
-
-Combining with `fetch`, constructing a site from a workbook is straightforward:
-
-<details>
-  <summary><b>Vanilla JS + HTML fetch workbook and generate table previews</b> (click to show)</summary>
-
-```html
-<body>
-  <style>TABLE { border-collapse: collapse; } TD { border: 1px solid; }</style>
-  <div id="tavolo"></div>
-  <script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
-  <script type="text/javascript">
-(async() => {
-  /* fetch and parse workbook -- see the fetch example for details */
-  const workbook = XLSX.read(await (await fetch("sheetjs.xlsx")).arrayBuffer());
-
-  let output = [];
-  /* loop through the worksheet names in order */
-  workbook.SheetNames.forEach(name => {
-
-    /* generate HTML from the corresponding worksheets */
-    const worksheet = workbook.Sheets[name];
-    const html = XLSX.utils.sheet_to_html(worksheet);
-
-    /* add a header with the title name followed by the table */
-    output.push(`<H3>${name}</H3>${html}`);
-  });
-  /* write to the DOM at the end */
-  tavolo.innerHTML = output.join("\n");
-})();
-  </script>
-</body>
-```
-
-</details>
-
-<details>
-  <summary><b>React fetch workbook and generate HTML table previews</b> (click to show)</summary>
-
-It is generally recommended to use a React-friendly workflow, but it is possible
-to generate HTML and use it in React with `dangerouslySetInnerHTML`:
-
-```jsx
-function Tabeller(props) {
-  /* the workbook object is the state */
-  const [workbook, setWorkbook] = React.useState(XLSX.utils.book_new());
-
-  /* fetch and update the workbook with an effect */
-  React.useEffect(() => { (async() => {
-    /* fetch and parse workbook -- see the fetch example for details */
-    const wb = XLSX.read(await (await fetch("sheetjs.xlsx")).arrayBuffer());
-    setWorkbook(wb);
-  })(); });
-
-  return workbook.SheetNames.map(name => (<>
-    <h3>name</h3>
-    <div dangerouslySetInnerHTML={{
-      /* this __html mantra is needed to set the inner HTML */
-      __html: XLSX.utils.sheet_to_html(workbook.Sheets[name])
-    }} />
-  </>));
-}
-```
-
-The [`react` demo](demos/react) includes more React examples.
-
-</details>
-
-<details>
-  <summary><b>VueJS fetch workbook and generate HTML table previews</b> (click to show)</summary>
-
-It is generally recommended to use a VueJS-friendly workflow, but it is possible
-to generate HTML and use it in VueJS with the `v-html` directive:
-
-```jsx
-import { read, utils } from 'xlsx';
-import { reactive } from 'vue';
-
-const S5SComponent = {
-  mounted() { (async() => {
-    /* fetch and parse workbook -- see the fetch example for details */
-    const workbook = read(await (await fetch("sheetjs.xlsx")).arrayBuffer());
-    /* loop through the worksheet names in order */
-    workbook.SheetNames.forEach(name => {
-      /* generate HTML from the corresponding worksheets */
-      const html = utils.sheet_to_html(workbook.Sheets[name]);
-      /* add to state */
-      this.wb.wb.push({ name, html });
-    });
-  })(); },
-  /* this state mantra is required for array updates to work */
-  setup() { return { wb: reactive({ wb: [] }) }; },
-  template: `
-  <div v-for="ws in wb.wb" :key="ws.name">
-    <h3>{{ ws.name }}</h3>
-    <div v-html="ws.html"></div>
-  </div>`
-};
-```
-
-The [`vuejs` demo](demos/vue) includes more React examples.
-
-</details>
-
-### Generating Single-Worksheet Snapshots
-
-The `sheet_to_*` functions accept a worksheet object.
-
-**API**
-
-_Generate a CSV from a single worksheet_
-
-```js
-var csv = XLSX.utils.sheet_to_csv(worksheet, opts);
-```
-
-This snapshot is designed to replicate the "CSV UTF8 (`.csv`)" output type.
-["Delimiter-Separated Output"](#delimiter-separated-output) describes the
-function and the optional `opts` argument in more detail.
-
-_Generate "Text" from a single worksheet_
-
-```js
-var txt = XLSX.utils.sheet_to_txt(worksheet, opts);
-```
-
-This snapshot is designed to replicate the "UTF16 Text (`.txt`)" output type.
-["Delimiter-Separated Output"](#delimiter-separated-output) describes the
-function and the optional `opts` argument in more detail.
-
-_Generate a list of formulae from a single worksheet_
-
-```js
-var fmla = XLSX.utils.sheet_to_formulae(worksheet);
-```
-
-This snapshot generates an array of entries representing the embedded formulae.
-Array formulae are rendered in the form `range=formula` while plain cells are
-rendered in the form `cell=formula or value`.  String literals are prefixed with
-an apostrophe `'`, consistent with Excel's formula bar display.
-
-["Formulae Output"](#formulae-output) describes the function in more detail.
-
diff --git a/docbits/40_interface.md b/docbits/40_interface.md
deleted file mode 100644
index 4ef3c34..0000000
--- a/docbits/40_interface.md
+++ /dev/null
@@ -1,66 +0,0 @@
-## Interface
-
-`XLSX` is the exposed variable in the browser and the exported node variable
-
-`XLSX.version` is the version of the library (added by the build script).
-
-`XLSX.SSF` is an embedded version of the [format library](https://github.com/SheetJS/ssf).
-
-### Parsing functions
-
-`XLSX.read(data, read_opts)` attempts to parse `data`.
-
-`XLSX.readFile(filename, read_opts)` attempts to read `filename` and parse.
-
-Parse options are described in the [Parsing Options](#parsing-options) section.
-
-### Writing functions
-
-`XLSX.write(wb, write_opts)` attempts to write the workbook `wb`
-
-`XLSX.writeFile(wb, filename, write_opts)` attempts to write `wb` to `filename`.
-In browser-based environments, it will attempt to force a client-side download.
-
-`XLSX.writeFileAsync(filename, wb, o, cb)` attempts to write `wb` to `filename`.
-If `o` is omitted, the writer will use the third argument as the callback.
-
-`XLSX.stream` contains a set of streaming write functions.
-
-Write options are described in the [Writing Options](#writing-options) section.
-
-### Utilities
-
-Utilities are available in the `XLSX.utils` object and are described in the
-[Utility Functions](#utility-functions) section:
-
-**Constructing:**
-
-- `book_new` creates an empty workbook
-- `book_append_sheet` adds a worksheet to a workbook
-
-**Importing:**
-
-- `aoa_to_sheet` converts an array of arrays of JS data to a worksheet.
-- `json_to_sheet` converts an array of JS objects to a worksheet.
-- `table_to_sheet` converts a DOM TABLE element to a worksheet.
-- `sheet_add_aoa` adds an array of arrays of JS data to an existing worksheet.
-- `sheet_add_json` adds an array of JS objects to an existing worksheet.
-
-
-**Exporting:**
-
-- `sheet_to_json` converts a worksheet object to an array of JSON objects.
-- `sheet_to_csv` generates delimiter-separated-values output.
-- `sheet_to_txt` generates UTF16 formatted text.
-- `sheet_to_html` generates HTML output.
-- `sheet_to_formulae` generates a list of the formulae (with value fallbacks).
-
-
-**Cell and cell address manipulation:**
-
-- `format_cell` generates the text value for a cell (using number formats).
-- `encode_row / decode_row` converts between 0-indexed rows and 1-indexed rows.
-- `encode_col / decode_col` converts between 0-indexed columns and column names.
-- `encode_cell / decode_cell` converts cell addresses.
-- `encode_range / decode_range` converts cell ranges.
-
diff --git a/docbits/50_csf.md b/docbits/50_csf.md
deleted file mode 100644
index 1a20e8b..0000000
--- a/docbits/50_csf.md
+++ /dev/null
@@ -1,25 +0,0 @@
-## Common Spreadsheet Format
-
-SheetJS conforms to the Common Spreadsheet Format (CSF):
-
-### General Structures
-
-Cell address objects are stored as `{c:C, r:R}` where `C` and `R` are 0-indexed
-column and row numbers, respectively.  For example, the cell address `B5` is
-represented by the object `{c:1, r:4}`.
-
-Cell range objects are stored as `{s:S, e:E}` where `S` is the first cell and
-`E` is the last cell in the range.  The ranges are inclusive.  For example, the
-range `A3:B7` is represented by the object `{s:{c:0, r:2}, e:{c:1, r:6}}`.
-Utility functions perform a row-major order walk traversal of a sheet range:
-
-```js
-for(var R = range.s.r; R <= range.e.r; ++R) {
-  for(var C = range.s.c; C <= range.e.c; ++C) {
-    var cell_address = {c:C, r:R};
-    /* if an A1-style address is needed, encode the address */
-    var cell_ref = XLSX.utils.encode_cell(cell_address);
-  }
-}
-```
-
diff --git a/docbits/51_cell.md b/docbits/51_cell.md
deleted file mode 100644
index fbbb73b..0000000
--- a/docbits/51_cell.md
+++ /dev/null
@@ -1,27 +0,0 @@
-### Cell Object
-
-Cell objects are plain JS objects with keys and values following the convention:
-
-| Key | Description                                                            |
-| --- | ---------------------------------------------------------------------- |
-| `v` | raw value (see Data Types section for more info)                       |
-| `w` | formatted text (if applicable)                                         |
-| `t` | type: `b` Boolean, `e` Error, `n` Number, `d` Date, `s` Text, `z` Stub |
-| `f` | cell formula encoded as an A1-style string (if applicable)             |
-| `F` | range of enclosing array if formula is array formula (if applicable)   |
-| `D` | if true, array formula is dynamic (if applicable)                      |
-| `r` | rich text encoding (if applicable)                                     |
-| `h` | HTML rendering of the rich text (if applicable)                        |
-| `c` | comments associated with the cell                                      |
-| `z` | number format string associated with the cell (if requested)           |
-| `l` | cell hyperlink object (`.Target` holds link, `.Tooltip` is tooltip)    |
-| `s` | the style/theme of the cell (if applicable)                            |
-
-Built-in export utilities (such as the CSV exporter) will use the `w` text if it
-is available.  To change a value, be sure to delete `cell.w` (or set it to
-`undefined`) before attempting to export.  The utilities will regenerate the `w`
-text from the number format (`cell.z`) and the raw value if possible.
-
-The actual array formula is stored in the `f` field of the first cell in the
-array range.  Other cells in the range will omit the `f` field.
-
diff --git a/docbits/52_datatype.md b/docbits/52_datatype.md
deleted file mode 100644
index f19d7ee..0000000
--- a/docbits/52_datatype.md
+++ /dev/null
@@ -1,95 +0,0 @@
-#### Data Types
-
-The raw value is stored in the `v` value property, interpreted based on the `t`
-type property.  This separation allows for representation of numbers as well as
-numeric text.  There are 6 valid cell types:
-
-| Type | Description                                                           |
-| :--: | :-------------------------------------------------------------------- |
-| `b`  | Boolean: value interpreted as JS `boolean`                            |
-| `e`  | Error: value is a numeric code and `w` property stores common name ** |
-| `n`  | Number: value is a JS `number` **                                     |
-| `d`  | Date: value is a JS `Date` object or string to be parsed as Date **   |
-| `s`  | Text: value interpreted as JS `string` and written as text **         |
-| `z`  | Stub: blank stub cell that is ignored by data processing utilities ** |
-
-<details>
-  <summary><b>Error values and interpretation</b> (click to show)</summary>
-
-|  Value | Error Meaning   |
-| -----: | :-------------- |
-| `0x00` | `#NULL!`        |
-| `0x07` | `#DIV/0!`       |
-| `0x0F` | `#VALUE!`       |
-| `0x17` | `#REF!`         |
-| `0x1D` | `#NAME?`        |
-| `0x24` | `#NUM!`         |
-| `0x2A` | `#N/A`          |
-| `0x2B` | `#GETTING_DATA` |
-
-</details>
-
-Type `n` is the Number type. This includes all forms of data that Excel stores
-as numbers, such as dates/times and Boolean fields.  Excel exclusively uses data
-that can be fit in an IEEE754 floating point number, just like JS Number, so the
-`v` field holds the raw number.  The `w` field holds formatted text.  Dates are
-stored as numbers by default and converted with `XLSX.SSF.parse_date_code`.
-
-Type `d` is the Date type, generated only when the option `cellDates` is passed.
-Since JSON does not have a natural Date type, parsers are generally expected to
-store ISO 8601 Date strings like you would get from `date.toISOString()`.  On
-the other hand, writers and exporters should be able to handle date strings and
-JS Date objects.  Note that Excel disregards timezone modifiers and treats all
-dates in the local timezone.  The library does not correct for this error.
-
-Type `s` is the String type.  Values are explicitly stored as text.  Excel will
-interpret these cells as "number stored as text".  Generated Excel files
-automatically suppress that class of error, but other formats may elicit errors.
-
-Type `z` represents blank stub cells.  They are generated in cases where cells
-have no assigned value but hold comments or other metadata. They are ignored by
-the core library data processing utility functions.  By default these cells are
-not generated; the parser `sheetStubs` option must be set to `true`.
-
-
-#### Dates
-
-<details>
-  <summary><b>Excel Date Code details</b> (click to show)</summary>
-
-By default, Excel stores dates as numbers with a format code that specifies date
-processing.  For example, the date `19-Feb-17` is stored as the number `42785`
-with a number format of `d-mmm-yy`.  The `SSF` module understands number formats
-and performs the appropriate conversion.
-
-XLSX also supports a special date type `d` where the data is an ISO 8601 date
-string.  The formatter converts the date back to a number.
-
-The default behavior for all parsers is to generate number cells.  Setting
-`cellDates` to true will force the generators to store dates.
-
-</details>
-
-<details>
-  <summary><b>Time Zones and Dates</b> (click to show)</summary>
-
-Excel has no native concept of universal time.  All times are specified in the
-local time zone.  Excel limitations prevent specifying true absolute dates.
-
-Following Excel, this library treats all dates as relative to local time zone.
-
-</details>
-
-<details>
-  <summary><b>Epochs: 1900 and 1904</b> (click to show)</summary>
-
-Excel supports two epochs (January 1 1900 and January 1 1904).
-The workbook's epoch can be determined by examining the workbook's
-`wb.Workbook.WBProps.date1904` property:
-
-```js
-!!(((wb.Workbook||{}).WBProps||{}).date1904)
-```
-
-</details>
-
diff --git a/docbits/53_wsobject.md b/docbits/53_wsobject.md
deleted file mode 100644
index 10b4c8e..0000000
--- a/docbits/53_wsobject.md
+++ /dev/null
@@ -1,48 +0,0 @@
-### Sheet Objects
-
-Each key that does not start with `!` maps to a cell (using `A-1` notation)
-
-`sheet[address]` returns the cell object for the specified address.
-
-**Special sheet keys (accessible as `sheet[key]`, each starting with `!`):**
-
-- `sheet['!ref']`: A-1 based range representing the sheet range. Functions that
-  work with sheets should use this parameter to determine the range.  Cells that
-  are assigned outside of the range are not processed.  In particular, when
-  writing a sheet by hand, cells outside of the range are not included
-
-  Functions that handle sheets should test for the presence of `!ref` field.
-  If the `!ref` is omitted or is not a valid range, functions are free to treat
-  the sheet as empty or attempt to guess the range.  The standard utilities that
-  ship with this library treat sheets as empty (for example, the CSV output is
-  empty string).
-
-  When reading a worksheet with the `sheetRows` property set, the ref parameter
-  will use the restricted range.  The original range is set at `ws['!fullref']`
-
-- `sheet['!margins']`: Object representing the page margins.  The default values
-  follow Excel's "normal" preset.  Excel also has a "wide" and a "narrow" preset
-  but they are stored as raw measurements. The main properties are listed below:
-
-<details>
-  <summary><b>Page margin details</b> (click to show)</summary>
-
-| key      | description            | "normal" | "wide" | "narrow" |
-|----------|------------------------|:---------|:-------|:-------- |
-| `left`   | left margin (inches)   | `0.7`    | `1.0`  | `0.25`   |
-| `right`  | right margin (inches)  | `0.7`    | `1.0`  | `0.25`   |
-| `top`    | top margin (inches)    | `0.75`   | `1.0`  | `0.75`   |
-| `bottom` | bottom margin (inches) | `0.75`   | `1.0`  | `0.75`   |
-| `header` | header margin (inches) | `0.3`    | `0.5`  | `0.3`    |
-| `footer` | footer margin (inches) | `0.3`    | `0.5`  | `0.3`    |
-
-```js
-/* Set worksheet sheet to "normal" */
-ws["!margins"]={left:0.7, right:0.7, top:0.75,bottom:0.75,header:0.3,footer:0.3}
-/* Set worksheet sheet to "wide" */
-ws["!margins"]={left:1.0, right:1.0, top:1.0, bottom:1.0, header:0.5,footer:0.5}
-/* Set worksheet sheet to "narrow" */
-ws["!margins"]={left:0.25,right:0.25,top:0.75,bottom:0.75,header:0.3,footer:0.3}
-```
-</details>
-
diff --git a/docbits/54_shobject.md b/docbits/54_shobject.md
deleted file mode 100644
index d1e2af3..0000000
--- a/docbits/54_shobject.md
+++ /dev/null
@@ -1,80 +0,0 @@
-#### Worksheet Object
-
-In addition to the base sheet keys, worksheets also add:
-
-- `ws['!cols']`: array of column properties objects.  Column widths are actually
-  stored in files in a normalized manner, measured in terms of the "Maximum
-  Digit Width" (the largest width of the rendered digits 0-9, in pixels).  When
-  parsed, the column objects store the pixel width in the `wpx` field, character
-  width in the `wch` field, and the maximum digit width in the `MDW` field.
-
-- `ws['!rows']`: array of row properties objects as explained later in the docs.
-  Each row object encodes properties including row height and visibility.
-
-- `ws['!merges']`: array of range objects corresponding to the merged cells in
-  the worksheet.  Plain text formats do not support merge cells.  CSV export
-  will write all cells in the merge range if they exist, so be sure that only
-  the first cell (upper-left) in the range is set.
-
-- `ws['!outline']`: configure how outlines should behave.  Options default to
-  the default settings in Excel 2019:
-
-| key       | Excel feature                                 | default |
-|:----------|:----------------------------------------------|:--------|
-| `above`   | Uncheck "Summary rows below detail"           | `false` |
-| `left`    | Uncheck "Summary rows to the right of detail" | `false` |
-
-- `ws['!protect']`: object of write sheet protection properties.  The `password`
-  key specifies the password for formats that support password-protected sheets
-  (XLSX/XLSB/XLS).  The writer uses the XOR obfuscation method.  The following
-  keys control the sheet protection -- set to `false` to enable a feature when
-  sheet is locked or set to `true` to disable a feature:
-
-<details>
-  <summary><b>Worksheet Protection Details</b> (click to show)</summary>
-
-| key                   | feature (true=disabled / false=enabled) | default    |
-|:----------------------|:----------------------------------------|:-----------|
-| `selectLockedCells`   | Select locked cells                     | enabled    |
-| `selectUnlockedCells` | Select unlocked cells                   | enabled    |
-| `formatCells`         | Format cells                            | disabled   |
-| `formatColumns`       | Format columns                          | disabled   |
-| `formatRows`          | Format rows                             | disabled   |
-| `insertColumns`       | Insert columns                          | disabled   |
-| `insertRows`          | Insert rows                             | disabled   |
-| `insertHyperlinks`    | Insert hyperlinks                       | disabled   |
-| `deleteColumns`       | Delete columns                          | disabled   |
-| `deleteRows`          | Delete rows                             | disabled   |
-| `sort`                | Sort                                    | disabled   |
-| `autoFilter`          | Filter                                  | disabled   |
-| `pivotTables`         | Use PivotTable reports                  | disabled   |
-| `objects`             | Edit objects                            | enabled    |
-| `scenarios`           | Edit scenarios                          | enabled    |
-</details>
-
-- `ws['!autofilter']`: AutoFilter object following the schema:
-
-```typescript
-type AutoFilter = {
-  ref:string; // A-1 based range representing the AutoFilter table range
-}
-```
-
-#### Chartsheet Object
-
-Chartsheets are represented as standard sheets.  They are distinguished with the
-`!type` property set to `"chart"`.
-
-The underlying data and `!ref` refer to the cached data in the chartsheet.  The
-first row of the chartsheet is the underlying header.
-
-#### Macrosheet Object
-
-Macrosheets are represented as standard sheets.  They are distinguished with the
-`!type` property set to `"macro"`.
-
-#### Dialogsheet Object
-
-Dialogsheets are represented as standard sheets. They are distinguished with the
-`!type` property set to `"dialog"`.
-
diff --git a/docbits/55_wbobject.md b/docbits/55_wbobject.md
deleted file mode 100644
index d143c4a..0000000
--- a/docbits/55_wbobject.md
+++ /dev/null
@@ -1,12 +0,0 @@
-### Workbook Object
-
-`workbook.SheetNames` is an ordered list of the sheets in the workbook
-
-`wb.Sheets[sheetname]` returns an object representing the worksheet.
-
-`wb.Props` is an object storing the standard properties.  `wb.Custprops` stores
-custom properties.  Since the XLS standard properties deviate from the XLSX
-standard, XLS parsing stores core properties in both places.
-
-`wb.Workbook` stores [workbook-level attributes](#workbook-level-attributes).
-
diff --git a/docbits/56_wbprops.md b/docbits/56_wbprops.md
deleted file mode 100644
index 5446e00..0000000
--- a/docbits/56_wbprops.md
+++ /dev/null
@@ -1,44 +0,0 @@
-#### Workbook File Properties
-
-The various file formats use different internal names for file properties.  The
-workbook `Props` object normalizes the names:
-
-<details>
-  <summary><b>File Properties</b> (click to show)</summary>
-
-| JS Name       | Excel Description              |
-|:--------------|:-------------------------------|
-| `Title`       | Summary tab "Title"            |
-| `Subject`     | Summary tab "Subject"          |
-| `Author`      | Summary tab "Author"           |
-| `Manager`     | Summary tab "Manager"          |
-| `Company`     | Summary tab "Company"          |
-| `Category`    | Summary tab "Category"         |
-| `Keywords`    | Summary tab "Keywords"         |
-| `Comments`    | Summary tab "Comments"         |
-| `LastAuthor`  | Statistics tab "Last saved by" |
-| `CreatedDate` | Statistics tab "Created"       |
-
-</details>
-
-For example, to set the workbook title property:
-
-```js
-if(!wb.Props) wb.Props = {};
-wb.Props.Title = "Insert Title Here";
-```
-
-Custom properties are added in the workbook `Custprops` object:
-
-```js
-if(!wb.Custprops) wb.Custprops = {};
-wb.Custprops["Custom Property"] = "Custom Value";
-```
-
-Writers will process the `Props` key of the options object:
-
-```js
-/* force the Author to be "SheetJS" */
-XLSX.write(wb, {Props:{Author:"SheetJS"}});
-```
-
diff --git a/docbits/57_wbbook.md b/docbits/57_wbbook.md
deleted file mode 100644
index d260b16..0000000
--- a/docbits/57_wbbook.md
+++ /dev/null
@@ -1,53 +0,0 @@
-### Workbook-Level Attributes
-
-`wb.Workbook` stores workbook-level attributes.
-
-#### Defined Names
-
-<details>
-  <summary><b>Format Support</b> (click to show)</summary>
-
-**Defined Names**: XLSX/M, XLSB, BIFF8 XLS, XLML, SYLK
-
-**Unicode Defined Names**: XLSX/M, XLSB, BIFF8 XLS, XLML
-
-**Defined Name Comment**: XLSX/M, XLSB, BIFF8 XLS
-
-</details>
-
-`wb.Workbook.Names` is an array of defined name objects which have the keys:
-
-<details>
-  <summary><b>Defined Name Properties</b> (click to show)</summary>
-
-| Key       | Description                                                      |
-|:----------|:-----------------------------------------------------------------|
-| `Sheet`   | Name scope.  Sheet Index (0 = first sheet) or `null` (Workbook)  |
-| `Name`    | Case-sensitive name.  Standard rules apply **                    |
-| `Ref`     | A1-style Reference (`"Sheet1!$A$1:$D$20"`)                       |
-| `Comment` | Comment (only applicable for XLS/XLSX/XLSB)                      |
-
-</details>
-
-Excel allows two sheet-scoped defined names to share the same name.  However, a
-sheet-scoped name cannot collide with a workbook-scope name.  Workbook writers
-may not enforce this constraint.
-
-#### Workbook Views
-
-`wb.Workbook.Views` is an array of workbook view objects which have the keys:
-
-| Key             | Description                                         |
-|:----------------|:----------------------------------------------------|
-| `RTL`           | If true, display right-to-left                      |
-
-#### Miscellaneous Workbook Properties
-
-`wb.Workbook.WBProps` holds other workbook properties:
-
-| Key             | Description                                         |
-|:----------------|:----------------------------------------------------|
-| `CodeName`      | [VBA Project Workbook Code Name](#vba-and-macros)   |
-| `date1904`      | epoch: 0/false for 1900 system, 1/true for 1904     |
-| `filterPrivacy` | Warn or strip personally identifying info on save   |
-
diff --git a/docbits/60_features.md b/docbits/60_features.md
deleted file mode 100644
index e300ac4..0000000
--- a/docbits/60_features.md
+++ /dev/null
@@ -1,7 +0,0 @@
-### Document Features
-
-Even for basic features like date storage, the official Excel formats store the
-same content in different ways.  The parsers are expected to convert from the
-underlying file format representation to the Common Spreadsheet Format.  Writers
-are expected to convert from CSF back to the underlying file format.
-
diff --git a/docbits/61_formulae.md b/docbits/61_formulae.md
deleted file mode 100644
index 758a919..0000000
--- a/docbits/61_formulae.md
+++ /dev/null
@@ -1,290 +0,0 @@
-#### Formulae
-
-The A1-style formula string is stored in the `f` field.  Even though different
-file formats store the formulae in different ways, the formats are translated.
-Even though some formats store formulae with a leading equal sign, CSF formulae
-do not start with `=`.
-
-<details>
-  <summary><b>Formulae File Format Support</b> (click to show)</summary>
-
-| Storage Representation | Formats                  | Read  | Write |
-|:-----------------------|:-------------------------|:-----:|:-----:|
-| A1-style strings       | XLSX                     |   ✔   |   ✔   |
-| RC-style strings       | XLML and plain text      |   ✔   |   ✔   |
-| BIFF Parsed formulae   | XLSB and all XLS formats |   ✔   |       |
-| OpenFormula formulae   | ODS/FODS/UOS             |   ✔   |   ✔   |
-| Lotus Parsed formulae  | All Lotus WK_ formats    |   ✔   |       |
-
-Since Excel prohibits named cells from colliding with names of A1 or RC style
-cell references, a (not-so-simple) regex conversion is possible.  BIFF Parsed
-formulae and Lotus Parsed formulae have to be explicitly unwound.  OpenFormula
-formulae can be converted with regular expressions.
-
-Shared formulae are decompressed and each cell has the formula corresponding to
-its cell.  Writers generally do not attempt to generate shared formulae.
-</details>
-
-**Single-Cell Formulae**
-
-For simple formulae, the `f` key of the desired cell can be set to the actual
-formula text.  This worksheet represents `A1=1`, `A2=2`, and `A3=A1+A2`:
-
-```js
-var worksheet = {
-  "!ref": "A1:A3",
-  A1: { t:'n', v:1 },
-  A2: { t:'n', v:2 },
-  A3: { t:'n', v:3, f:'A1+A2' }
-};
-```
-
-Utilities like `aoa_to_sheet` will accept cell objects in lieu of values:
-
-```js
-var worksheet = XLSX.utils.aoa_to_sheet([
-  [ 1 ], // A1
-  [ 2 ], // A2
-  [ {t: "n", v: 3, f: "A1+A2"} ] // A3
-]);
-```
-
-Cells with formula entries but no value will be serialized in a way that Excel
-and other spreadsheet tools will recognize.  This library will not automatically
-compute formula results!  For example, the following worksheet will include the
-`BESSELJ` function but the result will not be available in JavaScript:
-
-```js
-var worksheet = XLSX.utils.aoa_to_sheet([
-  [ 3.14159, 2 ], // Row "1"
-  [ { t:'n', f:'BESSELJ(A1,B1)' } ] // Row "2" will be calculated on file open
-}
-```
-
-If the actual results are needed in JS, [SheetJS Pro](https://sheetjs.com/pro)
-offers a formula calculator component for evaluating expressions, updating
-values and dependent cells, and refreshing entire workbooks.
-
-
-**Array Formulae**
-
-_Assign an array formula_
-
-```js
-XLSX.utils.sheet_set_array_formula(worksheet, range, formula);
-```
-
-Array formulae are stored in the top-left cell of the array block.  All cells
-of an array formula have a `F` field corresponding to the range.  A single-cell
-formula can be distinguished from a plain formula by the presence of `F` field.
-
-For example, setting the cell `C1` to the array formula `{=SUM(A1:A3*B1:B3)}`:
-
-```js
-// API function
-XLSX.utils.sheet_set_array_formula(worksheet, "C1", "SUM(A1:A3*B1:B3)");
-
-// ... OR raw operations
-worksheet['C1'] = { t:'n', f: "SUM(A1:A3*B1:B3)", F:"C1:C1" };
-```
-
-For a multi-cell array formula, every cell has the same array range but only the
-first cell specifies the formula.  Consider `D1:D3=A1:A3*B1:B3`:
-
-```js
-// API function
-XLSX.utils.sheet_set_array_formula(worksheet, "D1:D3", "A1:A3*B1:B3");
-
-// ... OR raw operations
-worksheet['D1'] = { t:'n', F:"D1:D3", f:"A1:A3*B1:B3" };
-worksheet['D2'] = { t:'n', F:"D1:D3" };
-worksheet['D3'] = { t:'n', F:"D1:D3" };
-```
-
-Utilities and writers are expected to check for the presence of a `F` field and
-ignore any possible formula element `f` in cells other than the starting cell.
-They are not expected to perform validation of the formulae!
-
-
-**Dynamic Array Formulae**
-
-_Assign a dynamic array formula_
-
-```js
-XLSX.utils.sheet_set_array_formula(worksheet, range, formula, true);
-```
-
-Released in 2020, Dynamic Array Formulae are supported in the XLSX/XLSM and XLSB
-file formats.  They are represented like normal array formulae but have special
-cell metadata indicating that the formula should be allowed to adjust the range.
-
-An array formula can be marked as dynamic by setting the cell's `D` property to
-true.  The `F` range is expected but can be the set to the current cell:
-
-```js
-// API function
-XLSX.utils.sheet_set_array_formula(worksheet, "C1", "_xlfn.UNIQUE(A1:A3)", 1);
-
-// ... OR raw operations
-worksheet['C1'] = { t: "s", f: "_xlfn.UNIQUE(A1:A3)", F:"C1", D: 1 }; // dynamic
-```
-
-**Localization with Function Names**
-
-SheetJS operates at the file level.  Excel stores formula expressions using the
-English (United States) function names.  For non-English users, Excel uses a
-localized set of function names.
-
-For example, when the computer language and region is set to French (France),
-Excel interprets `=SOMME(A1:C3)` as if `SOMME` is the `SUM` function.  However,
-in the actual file, Excel stores `SUM(A1:C3)`.
-
-**Prefixed "Future Functions"**
-
-Functions introduced in newer versions of Excel are prefixed with `_xlfn.` when
-stored in files.  When writing formula expressions using these functions, the
-prefix is required for maximal compatibility:
-
-```js
-// Broadest compatibility
-XLSX.utils.sheet_set_array_formula(worksheet, "C1", "_xlfn.UNIQUE(A1:A3)", 1);
-
-// Can cause errors in spreadsheet software
-XLSX.utils.sheet_set_array_formula(worksheet, "C1", "UNIQUE(A1:A3)", 1);
-```
-
-When reading a file, the `xlfn` option preserves the prefixes.
-
-<details>
-  <summary><b> Functions requiring `_xlfn.` prefix</b> (click to show)</summary>
-
-This list is growing with each Excel release.
-
-```
-ACOT
-ACOTH
-AGGREGATE
-ARABIC
-BASE
-BETA.DIST
-BETA.INV
-BINOM.DIST
-BINOM.DIST.RANGE
-BINOM.INV
-BITAND
-BITLSHIFT
-BITOR
-BITRSHIFT
-BITXOR
-BYCOL
-BYROW
-CEILING.MATH
-CEILING.PRECISE
-CHISQ.DIST
-CHISQ.DIST.RT
-CHISQ.INV
-CHISQ.INV.RT
-CHISQ.TEST
-COMBINA
-CONFIDENCE.NORM
-CONFIDENCE.T
-COT
-COTH
-COVARIANCE.P
-COVARIANCE.S
-CSC
-CSCH
-DAYS
-DECIMAL
-ERF.PRECISE
-ERFC.PRECISE
-EXPON.DIST
-F.DIST
-F.DIST.RT
-F.INV
-F.INV.RT
-F.TEST
-FIELDVALUE
-FILTERXML
-FLOOR.MATH
-FLOOR.PRECISE
-FORMULATEXT
-GAMMA
-GAMMA.DIST
-GAMMA.INV
-GAMMALN.PRECISE
-GAUSS
-HYPGEOM.DIST
-IFNA
-IMCOSH
-IMCOT
-IMCSC
-IMCSCH
-IMSEC
-IMSECH
-IMSINH
-IMTAN
-ISFORMULA
-ISOMITTED
-ISOWEEKNUM
-LAMBDA
-LET
-LOGNORM.DIST
-LOGNORM.INV
-MAKEARRAY
-MAP
-MODE.MULT
-MODE.SNGL
-MUNIT
-NEGBINOM.DIST
-NORM.DIST
-NORM.INV
-NORM.S.DIST
-NORM.S.INV
-NUMBERVALUE
-PDURATION
-PERCENTILE.EXC
-PERCENTILE.INC
-PERCENTRANK.EXC
-PERCENTRANK.INC
-PERMUTATIONA
-PHI
-POISSON.DIST
-QUARTILE.EXC
-QUARTILE.INC
-QUERYSTRING
-RANDARRAY
-RANK.AVG
-RANK.EQ
-REDUCE
-RRI
-SCAN
-SEC
-SECH
-SEQUENCE
-SHEET
-SHEETS
-SKEW.P
-SORTBY
-STDEV.P
-STDEV.S
-T.DIST
-T.DIST.2T
-T.DIST.RT
-T.INV
-T.INV.2T
-T.TEST
-UNICHAR
-UNICODE
-UNIQUE
-VAR.P
-VAR.S
-WEBSERVICE
-WEIBULL.DIST
-XLOOKUP
-XOR
-Z.TEST
-```
-
-</details>
-
diff --git a/docbits/62_colrow.md b/docbits/62_colrow.md
deleted file mode 100644
index 9f00c50..0000000
--- a/docbits/62_colrow.md
+++ /dev/null
@@ -1,120 +0,0 @@
-#### Row and Column Properties
-
-<details>
-  <summary><b>Format Support</b> (click to show)</summary>
-
-**Row Properties**: XLSX/M, XLSB, BIFF8 XLS, XLML, SYLK, DOM, ODS
-
-**Column Properties**: XLSX/M, XLSB, BIFF8 XLS, XLML, SYLK, DOM
-
-</details>
-
-
-Row and Column properties are not extracted by default when reading from a file
-and are not persisted by default when writing to a file. The option
-`cellStyles: true` must be passed to the relevant read or write function.
-
-_Column Properties_
-
-The `!cols` array in each worksheet, if present, is a collection of `ColInfo`
-objects which have the following properties:
-
-```typescript
-type ColInfo = {
-  /* visibility */
-  hidden?: boolean; // if true, the column is hidden
-
-  /* column width is specified in one of the following ways: */
-  wpx?:    number;  // width in screen pixels
-  width?:  number;  // width in Excel's "Max Digit Width", width*256 is integral
-  wch?:    number;  // width in characters
-
-  /* other fields for preserving features from files */
-  level?:  number;  // 0-indexed outline / group level
-  MDW?:    number;  // Excel's "Max Digit Width" unit, always integral
-};
-```
-
-_Row Properties_
-
-The `!rows` array in each worksheet, if present, is a collection of `RowInfo`
-objects which have the following properties:
-
-```typescript
-type RowInfo = {
-  /* visibility */
-  hidden?: boolean; // if true, the row is hidden
-
-  /* row height is specified in one of the following ways: */
-  hpx?:    number;  // height in screen pixels
-  hpt?:    number;  // height in points
-
-  level?:  number;  // 0-indexed outline / group level
-};
-```
-
-_Outline / Group Levels Convention_
-
-The Excel UI displays the base outline level as `1` and the max level as `8`.
-Following JS conventions, SheetJS uses 0-indexed outline levels wherein the base
-outline level is `0` and the max level is `7`.
-
-<details>
-  <summary><b>Why are there three width types?</b> (click to show)</summary>
-
-There are three different width types corresponding to the three different ways
-spreadsheets store column widths:
-
-SYLK and other plain text formats use raw character count. Contemporaneous tools
-like Visicalc and Multiplan were character based.  Since the characters had the
-same width, it sufficed to store a count.  This tradition was continued into the
-BIFF formats.
-
-SpreadsheetML (2003) tried to align with HTML by standardizing on screen pixel
-count throughout the file.  Column widths, row heights, and other measures use
-pixels.  When the pixel and character counts do not align, Excel rounds values.
-
-XLSX internally stores column widths in a nebulous "Max Digit Width" form.  The
-Max Digit Width is the width of the largest digit when rendered (generally the
-"0" character is the widest).  The internal width must be an integer multiple of
-the the width divided by 256.  ECMA-376 describes a formula for converting
-between pixels and the internal width.  This represents a hybrid approach.
-
-Read functions attempt to populate all three properties.  Write functions will
-try to cycle specified values to the desired type.  In order to avoid potential
-conflicts, manipulation should delete the other properties first.  For example,
-when changing the pixel width, delete the `wch` and `width` properties.
-</details>
-
-<details>
-  <summary><b>Implementation details</b> (click to show)</summary>
-
-_Row Heights_
-
-Excel internally stores row heights in points.  The default resolution is 72 DPI
-or 96 PPI, so the pixel and point size should agree.  For different resolutions
-they may not agree, so the library separates the concepts.
-
-Even though all of the information is made available, writers are expected to
-follow the priority order:
-
-1) use `hpx` pixel height if available
-2) use `hpt` point height if available
-
-_Column Widths_
-
-Given the constraints, it is possible to determine the MDW without actually
-inspecting the font!  The parsers guess the pixel width by converting from width
-to pixels and back, repeating for all possible MDW and selecting the MDW that
-minimizes the error.  XLML actually stores the pixel width, so the guess works
-in the opposite direction.
-
-Even though all of the information is made available, writers are expected to
-follow the priority order:
-
-1) use `width` field if available
-2) use `wpx` pixel width if available
-3) use `wch` character count if available
-
-</details>
-
diff --git a/docbits/63_numfmt.md b/docbits/63_numfmt.md
deleted file mode 100644
index e86d15e..0000000
--- a/docbits/63_numfmt.md
+++ /dev/null
@@ -1,81 +0,0 @@
-#### Number Formats
-
-The `cell.w` formatted text for each cell is produced from `cell.v` and `cell.z`
-format.  If the format is not specified, the Excel `General` format is used.
-The format can either be specified as a string or as an index into the format
-table.  Parsers are expected to populate `workbook.SSF` with the number format
-table.  Writers are expected to serialize the table.
-
-Custom tools should ensure that the local table has each used format string
-somewhere in the table.  Excel convention mandates that the custom formats start
-at index 164.  The following example creates a custom format from scratch:
-
-<details>
-  <summary><b>New worksheet with custom format</b> (click to show)</summary>
-
-```js
-var wb = {
-  SheetNames: ["Sheet1"],
-  Sheets: {
-    Sheet1: {
-      "!ref":"A1:C1",
-      A1: { t:"n", v:10000 },                    // <-- General format
-      B1: { t:"n", v:10000, z: "0%" },           // <-- Builtin format
-      C1: { t:"n", v:10000, z: "\"T\"\ #0.00" }  // <-- Custom format
-    }
-  }
-}
-```
-</details>
-
-The rules are slightly different from how Excel displays custom number formats.
-In particular, literal characters must be wrapped in double quotes or preceded
-by a backslash. For more info, see the Excel documentation article
-`Create or delete a custom number format` or ECMA-376 18.8.31 (Number Formats)
-
-
-<details>
-  <summary><b>Default Number Formats</b> (click to show)</summary>
-
-The default formats are listed in ECMA-376 18.8.30:
-
-| ID | Format                     |
-|---:|:---------------------------|
-|  0 | `General`                  |
-|  1 | `0`                        |
-|  2 | `0.00`                     |
-|  3 | `#,##0`                    |
-|  4 | `#,##0.00`                 |
-|  9 | `0%`                       |
-| 10 | `0.00%`                    |
-| 11 | `0.00E+00`                 |
-| 12 | `# ?/?`                    |
-| 13 | `# ??/??`                  |
-| 14 | `m/d/yy` (see below)       |
-| 15 | `d-mmm-yy`                 |
-| 16 | `d-mmm`                    |
-| 17 | `mmm-yy`                   |
-| 18 | `h:mm AM/PM`               |
-| 19 | `h:mm:ss AM/PM`            |
-| 20 | `h:mm`                     |
-| 21 | `h:mm:ss`                  |
-| 22 | `m/d/yy h:mm`              |
-| 37 | `#,##0 ;(#,##0)`           |
-| 38 | `#,##0 ;[Red](#,##0)`      |
-| 39 | `#,##0.00;(#,##0.00)`      |
-| 40 | `#,##0.00;[Red](#,##0.00)` |
-| 45 | `mm:ss`                    |
-| 46 | `[h]:mm:ss`                |
-| 47 | `mmss.0`                   |
-| 48 | `##0.0E+0`                 |
-| 49 | `@`                        |
-
-</details>
-
-Format 14 (`m/d/yy`) is localized by Excel: even though the file specifies that
-number format, it will be drawn differently based on system settings.  It makes
-sense when the producer and consumer of files are in the same locale, but that
-is not always the case over the Internet.  To get around this ambiguity, parse
-functions accept the `dateNF` option to override the interpretation of that
-specific format string.
-
diff --git a/docbits/64_cellprops.md b/docbits/64_cellprops.md
deleted file mode 100644
index f4cb805..0000000
--- a/docbits/64_cellprops.md
+++ /dev/null
@@ -1,72 +0,0 @@
-#### Hyperlinks
-
-<details>
-  <summary><b>Format Support</b> (click to show)</summary>
-
-**Cell Hyperlinks**: XLSX/M, XLSB, BIFF8 XLS, XLML, ODS
-
-**Tooltips**: XLSX/M, XLSB, BIFF8 XLS, XLML
-
-</details>
-
-Hyperlinks are stored in the `l` key of cell objects.  The `Target` field of the
-hyperlink object is the target of the link, including the URI fragment. Tooltips
-are stored in the `Tooltip` field and are displayed when you move your mouse
-over the text.
-
-For example, the following snippet creates a link from cell `A3` to
-<https://sheetjs.com> with the tip `"Find us @ SheetJS.com!"`:
-
-```js
-ws['A1'].l = { Target:"https://sheetjs.com", Tooltip:"Find us @ SheetJS.com!" };
-```
-
-Note that Excel does not automatically style hyperlinks -- they will generally
-be displayed as normal text.
-
-_Remote Links_
-
-HTTP / HTTPS links can be used directly:
-
-```js
-ws['A2'].l = { Target:"https://docs.sheetjs.com/#hyperlinks" };
-ws['A3'].l = { Target:"http://localhost:7262/yes_localhost_works" };
-```
-
-Excel also supports `mailto` email links with subject line:
-
-```js
-ws['A4'].l = { Target:"mailto:ignored@dev.null" };
-ws['A5'].l = { Target:"mailto:ignored@dev.null?subject=Test Subject" };
-```
-
-_Local Links_
-
-Links to absolute paths should use the `file://` URI scheme:
-
-```js
-ws['B1'].l = { Target:"file:///SheetJS/t.xlsx" }; /* Link to /SheetJS/t.xlsx */
-ws['B2'].l = { Target:"file:///c:/SheetJS.xlsx" }; /* Link to c:\SheetJS.xlsx */
-```
-
-Links to relative paths can be specified without a scheme:
-
-```js
-ws['B3'].l = { Target:"SheetJS.xlsb" }; /* Link to SheetJS.xlsb */
-ws['B4'].l = { Target:"../SheetJS.xlsm" }; /* Link to ../SheetJS.xlsm */
-```
-
-Relative Paths have undefined behavior in the SpreadsheetML 2003 format.  Excel
-2019 will treat a `..\` parent mark as two levels up.
-
-_Internal Links_
-
-Links where the target is a cell or range or defined name in the same workbook
-("Internal Links") are marked with a leading hash character:
-
-```js
-ws['C1'].l = { Target:"#E2" }; /* Link to cell E2 */
-ws['C2'].l = { Target:"#Sheet2!E2" }; /* Link to cell E2 in sheet Sheet2 */
-ws['C3'].l = { Target:"#SomeDefinedName" }; /* Link to Defined Name */
-```
-
diff --git a/docbits/66_comments.md b/docbits/66_comments.md
deleted file mode 100644
index b186262..0000000
--- a/docbits/66_comments.md
+++ /dev/null
@@ -1,48 +0,0 @@
-#### Cell Comments
-
-Cell comments are objects stored in the `c` array of cell objects.  The actual
-contents of the comment are split into blocks based on the comment author.  The
-`a` field of each comment object is the author of the comment and the `t` field
-is the plain text representation.
-
-For example, the following snippet appends a cell comment into cell `A1`:
-
-```js
-if(!ws.A1.c) ws.A1.c = [];
-ws.A1.c.push({a:"SheetJS", t:"I'm a little comment, short and stout!"});
-```
-
-Note: XLSB enforces a 54 character limit on the Author name.  Names longer than
-54 characters may cause issues with other formats.
-
-To mark a comment as normally hidden, set the `hidden` property:
-
-```js
-if(!ws.A1.c) ws.A1.c = [];
-ws.A1.c.push({a:"SheetJS", t:"This comment is visible"});
-
-if(!ws.A2.c) ws.A2.c = [];
-ws.A2.c.hidden = true;
-ws.A2.c.push({a:"SheetJS", t:"This comment will be hidden"});
-```
-
-
-_Threaded Comments_
-
-Introduced in Excel 365, threaded comments are plain text comment snippets with
-author metadata and parent references. They are supported in XLSX and XLSB.
-
-To mark a comment as threaded, each comment part must have a true `T` property:
-
-```js
-if(!ws.A1.c) ws.A1.c = [];
-ws.A1.c.push({a:"SheetJS", t:"This is not threaded"});
-
-if(!ws.A2.c) ws.A2.c = [];
-ws.A2.c.hidden = true;
-ws.A2.c.push({a:"SheetJS", t:"This is threaded", T: true});
-ws.A2.c.push({a:"JSSheet", t:"This is also threaded", T: true});
-```
-
-There is no Active Directory or Office 365 metadata associated with authors in a thread.
-
diff --git a/docbits/73_sheetprops.md b/docbits/73_sheetprops.md
deleted file mode 100644
index f8d8107..0000000
--- a/docbits/73_sheetprops.md
+++ /dev/null
@@ -1,34 +0,0 @@
-#### Sheet Visibility
-
-Excel enables hiding sheets in the lower tab bar.  The sheet data is stored in
-the file but the UI does not readily make it available.  Standard hidden sheets
-are revealed in the "Unhide" menu.  Excel also has "very hidden" sheets which
-cannot be revealed in the menu.  It is only accessible in the VB Editor!
-
-The visibility setting is stored in the `Hidden` property of sheet props array.
-
-<details>
-  <summary><b>More details</b> (click to show)</summary>
-
-| Value | Definition  |
-|:-----:|:------------|
-|   0   | Visible     |
-|   1   | Hidden      |
-|   2   | Very Hidden |
-
-With <https://rawgit.com/SheetJS/test_files/HEAD/sheet_visibility.xlsx>:
-
-```js
-> wb.Workbook.Sheets.map(function(x) { return [x.name, x.Hidden] })
-[ [ 'Visible', 0 ], [ 'Hidden', 1 ], [ 'VeryHidden', 2 ] ]
-```
-
-Non-Excel formats do not support the Very Hidden state.  The best way to test
-if a sheet is visible is to check if the `Hidden` property is logical truth:
-
-```js
-> wb.Workbook.Sheets.map(function(x) { return [x.name, !x.Hidden] })
-[ [ 'Visible', true ], [ 'Hidden', false ], [ 'VeryHidden', false ] ]
-```
-</details>
-
diff --git a/docbits/77_macrovba.md b/docbits/77_macrovba.md
deleted file mode 100644
index e037f76..0000000
--- a/docbits/77_macrovba.md
+++ /dev/null
@@ -1,45 +0,0 @@
-#### VBA and Macros
-
-VBA Macros are stored in a special data blob that is exposed in the `vbaraw`
-property of the workbook object when the `bookVBA` option is `true`.  They are
-supported in `XLSM`, `XLSB`, and `BIFF8 XLS` formats.  The supported format
-writers automatically insert the data blobs if it is present in the workbook and
-associate with the worksheet names.
-
-<details>
-	<summary><b>Custom Code Names</b> (click to show)</summary>
-
-The workbook code name is stored in `wb.Workbook.WBProps.CodeName`.  By default,
-Excel will write `ThisWorkbook` or a translated phrase like `DieseArbeitsmappe`.
-Worksheet and Chartsheet code names are in the worksheet properties object at
-`wb.Workbook.Sheets[i].CodeName`.  Macrosheets and Dialogsheets are ignored.
-
-The readers and writers preserve the code names, but they have to be manually
-set when adding a VBA blob to a different workbook.
-
-</details>
-
-<details>
-	<summary><b>Macrosheets</b> (click to show)</summary>
-
-Older versions of Excel also supported a non-VBA "macrosheet" sheet type that
-stored automation commands.  These are exposed in objects with the `!type`
-property set to `"macro"`.
-
-</details>
-
-<details>
-	<summary><b>Detecting macros in workbooks</b> (click to show)</summary>
-
-The `vbaraw` field will only be set if macros are present, so testing is simple:
-
-```js
-function wb_has_macro(wb/*:workbook*/)/*:boolean*/ {
-	if(!!wb.vbaraw) return true;
-	const sheets = wb.SheetNames.map((n) => wb.Sheets[n]);
-	return sheets.some((ws) => !!ws && ws['!type']=='macro');
-}
-```
-
-</details>
-
diff --git a/docbits/80_parseopts.md b/docbits/80_parseopts.md
deleted file mode 100644
index 0fb657d..0000000
--- a/docbits/80_parseopts.md
+++ /dev/null
@@ -1,145 +0,0 @@
-## Parsing Options
-
-The exported `read` and `readFile` functions accept an options argument:
-
-| Option Name | Default | Description                                          |
-| :---------- | ------: | :--------------------------------------------------- |
-|`type`       |         | Input data encoding (see Input Type below)           |
-|`raw`        | false   | If true, plain text parsing will not parse values ** |
-|`codepage`   |         | If specified, use code page when appropriate **      |
-|`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          |
-|`cellStyles` | false   | Save style/theme info to the `.s` field              |
-|`cellText`   | true    | Generated formatted text to the `.w` field           |
-|`cellDates`  | false   | Store dates as type `d` (default is `n`)             |
-|`dateNF`     |         | If specified, use the string for date code 14 **     |
-|`sheetStubs` | false   | Create cell objects of type `z` for stub cells       |
-|`sheetRows`  | 0       | If >0, read the first `sheetRows` rows **            |
-|`bookDeps`   | false   | If true, parse calculation chains                    |
-|`bookFiles`  | false   | If true, add raw files to book object **             |
-|`bookProps`  | false   | If true, only parse enough to get book metadata **   |
-|`bookSheets` | false   | If true, only parse enough to get the sheet names    |
-|`bookVBA`    | false   | If true, copy VBA blob to `vbaraw` field **          |
-|`password`   | ""      | If defined and file is encrypted, use password **    |
-|`WTF`        | false   | If true, throw errors on unexpected file features ** |
-|`sheets`     |         | If specified, only parse specified sheets **         |
-|`PRN`        | false   | If true, allow parsing of PRN files **               |
-|`xlfn`       | false   | If true, preserve `_xlfn.` prefixes in formulae **   |
-|`FS`         |         | DSV Field Separator override                         |
-
-- 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 plain text.
-  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 false
-- `bookFiles` behavior depends on file type:
-    * `keys` array (paths in the ZIP) for ZIP-based formats
-    * `files` hash (mapping paths to objects representing the files) for ZIP
-    * `cfb` object for formats using CFB containers
-- `sheetRows-1` rows will be generated when looking at the JSON object output
-  (since the header row is counted as a row when parsing the data)
-- By default all worksheets are parsed.  `sheets` restricts based on input type:
-    * number: zero-based index of worksheet to parse (`0` is first worksheet)
-    * string: name of worksheet to parse (case insensitive)
-    * array of numbers and strings to select multiple worksheets.
-- `bookVBA` merely exposes the raw VBA CFB object.  It does not parse the data.
-  XLSM and XLSB store the VBA CFB object in `xl/vbaProject.bin`. BIFF8 XLS mixes
-  the VBA entries alongside the core Workbook entry, so the library generates a
-  new XLSB-compatible blob from the XLS CFB container.
-- `codepage` is applied to BIFF2 - BIFF5 files without `CodePage` records and to
-  CSV files without BOM in `type:"binary"`.  BIFF8 XLS always defaults to 1200.
-- `PRN` affects parsing of text files without a common delimiter character.
-- Currently only XOR encryption is supported.  Unsupported error will be thrown
-  for files employing other encryption methods.
-- Newer Excel functions are serialized with the `_xlfn.` prefix, hidden from the
-  user. SheetJS will strip `_xlfn.` normally. The `xlfn` option preserves them.
-- WTF is mainly for development.  By default, the parser will suppress read
-  errors on single worksheets, allowing you to read from the worksheets that do
-  parse properly. Setting `WTF:true` forces those errors to be thrown.
-
-### Input Type
-
-Strings can be interpreted in multiple ways.  The `type` parameter for `read`
-tells the library how to parse the data argument:
-
-| `type`     | expected input                                                  |
-|------------|-----------------------------------------------------------------|
-| `"base64"` | string: Base64 encoding of the file                             |
-| `"binary"` | string: binary string (byte `n` is `data.charCodeAt(n)`)        |
-| `"string"` | string: JS string (characters interpreted as UTF8)              |
-| `"buffer"` | nodejs Buffer                                                   |
-| `"array"`  | array: array of 8-bit unsigned int (byte `n` is `data[n]`)      |
-| `"file"`   | string: path of file that will be read (nodejs only)            |
-
-### Guessing File Type
-
-<details>
-  <summary><b>Implementation Details</b> (click to show)</summary>
-
-Excel and other spreadsheet tools read the first few bytes and apply other
-heuristics to determine a file type.  This enables file type punning: renaming
-files with the `.xls` extension will tell your computer to use Excel to open the
-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 protected XLSX/XLSB or WQ3/QPW or XLR   |
-| `0x09` | BIFF Stream   | BIFF 2/3/4/5                                        |
-| `0x3C` | XML/HTML      | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-| `0x50` | ZIP Archive   | XLSB or XLSX/M or ODS or UOS2 or NUMBERS or text    |
-| `0x49` | Plain Text    | SYLK or plain text                                  |
-| `0x54` | Plain Text    | DIF or plain text                                   |
-| `0xEF` | UTF8 Encoded  | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-| `0xFF` | UTF16 Encoded | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-| `0x00` | Record Stream | Lotus WK\* or Quattro Pro or plain text             |
-| `0x7B` | Plain text    | RTF or plain text                                   |
-| `0x0A` | Plain text    | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-| `0x0D` | Plain text    | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-| `0x20` | Plain text    | SpreadsheetML / Flat ODS / UOS1 / HTML / plain text |
-
-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)
-
-Works for Windows files are detected based on the BOF record with type `0xFF`
-
-Plain text format guessing follows the priority order:
-
-| Format | Test                                                                |
-|:-------|:--------------------------------------------------------------------|
-| XML    | `<?xml` appears in the first 1024 characters                        |
-| HTML   | starts with `<` and HTML tags appear in the first 1024 characters * |
-| XML    | starts with `<` and the first tag is valid                          |
-| RTF    | starts with `{\rt`                                                  |
-| DSV    | starts with `/sep=.$/`, separator is the specified character        |
-| DSV    | more unquoted `|` chars than `;` `\t`  `,` in the first 1024        |
-| DSV    | more unquoted `;` chars than `\t` or `,` in the first 1024          |
-| TSV    | more unquoted `\t` chars than `,` chars in the first 1024           |
-| CSV    | one of the first 1024 characters is a comma `","`                   |
-| ETH    | starts with `socialcalc:version:`                                   |
-| PRN    | `PRN` option is set to true                                         |
-| CSV    | (fallback)                                                          |
-
-- HTML tags include: `html`, `table`, `head`, `meta`, `script`, `style`, `div`
-
-</details>
-
-<details>
-  <summary><b>Why are random text files valid?</b> (click to show)</summary>
-
-Excel is extremely aggressive in reading files.  Adding an XLS extension to any
-display text file  (where the only characters are ANSI display chars) tricks
-Excel into thinking that the file is potentially a CSV or TSV file, even if it
-is only one column!  This library attempts to replicate that behavior.
-
-The best approach is to validate the desired worksheet and ensure it has the
-expected number of rows or columns.  Extracting the range is extremely simple:
-
-```js
-var range = XLSX.utils.decode_range(worksheet['!ref']);
-var ncols = range.e.c - range.s.c + 1, nrows = range.e.r - range.s.r + 1;
-```
-
-</details>
-
diff --git a/docbits/81_writeopts.md b/docbits/81_writeopts.md
deleted file mode 100644
index 52bc8a1..0000000
--- a/docbits/81_writeopts.md
+++ /dev/null
@@ -1,88 +0,0 @@
-## Writing Options
-
-The exported `write` and `writeFile` functions accept an options argument:
-
-| Option Name |  Default | Description                                         |
-| :---------- | -------: | :-------------------------------------------------- |
-|`type`       |          | Output data encoding (see Output Type below)        |
-|`cellDates`  |  `false` | Store dates as type `d` (default is `n`)            |
-|`bookSST`    |  `false` | Generate Shared String Table **                     |
-|`bookType`   | `"xlsx"` | Type of Workbook (see below for supported formats)  |
-|`sheet`      |     `""` | Name of Worksheet for single-sheet formats **       |
-|`compression`|  `false` | Use ZIP compression for ZIP-based formats **        |
-|`Props`      |          | Override workbook properties when writing **        |
-|`themeXLSX`  |          | Override theme XML when writing XLSX/XLSB/XLSM **   |
-|`ignoreEC`   |   `true` | Suppress "number as text" errors **                 |
-|`numbers`    |          | Payload for NUMBERS export **                       |
-
-- `bookSST` is slower and more memory intensive, but has better compatibility
-  with older versions of iOS Numbers
-- The raw data is the only thing guaranteed to be saved.  Features not described
-  in this README may not be serialized.
-- `cellDates` only applies to XLSX output and is not guaranteed to work with
-  third-party readers.  Excel itself does not usually write cells with type `d`
-  so non-Excel tools may ignore the data or error in the presence of dates.
-- `Props` is an object mirroring the workbook `Props` field.  See the table from
-  the [Workbook File Properties](#workbook-file-properties) section.
-- if specified, the string from `themeXLSX` will be saved as the primary theme
-  for XLSX/XLSB/XLSM files (to `xl/theme/theme1.xml` in the ZIP)
-- Due to a bug in the program, some features like "Text to Columns" will crash
-  Excel on worksheets where error conditions are ignored.  The writer will mark
-  files to ignore the error by default.  Set `ignoreEC` to `false` to suppress.
-- Due to the size of the data, the NUMBERS data is not included by default. The
-  included `xlsx.zahl.js` and `xlsx.zahl.mjs` scripts include the data.
-
-### Supported Output Formats
-
-For broad compatibility with third-party tools, this library supports many
-output formats.  The specific file type is controlled with `bookType` option:
-
-| `bookType` | file ext | container | sheets | Description                     |
-| :--------- | -------: | :-------: | :----- |:------------------------------- |
-| `xlsx`     | `.xlsx`  |    ZIP    | multi  | Excel 2007+ XML Format          |
-| `xlsm`     | `.xlsm`  |    ZIP    | multi  | Excel 2007+ Macro XML Format    |
-| `xlsb`     | `.xlsb`  |    ZIP    | multi  | Excel 2007+ Binary Format       |
-| `biff8`    | `.xls`   |    CFB    | multi  | Excel 97-2004 Workbook Format   |
-| `biff5`    | `.xls`   |    CFB    | multi  | Excel 5.0/95 Workbook Format    |
-| `biff4`    | `.xls`   |   none    | single | Excel 4.0 Worksheet Format      |
-| `biff3`    | `.xls`   |   none    | single | Excel 3.0 Worksheet Format      |
-| `biff2`    | `.xls`   |   none    | single | Excel 2.0 Worksheet Format      |
-| `xlml`     | `.xls`   |   none    | multi  | Excel 2003-2004 (SpreadsheetML) |
-| `numbers`  |`.numbers`|    ZIP    | single | Numbers 3.0+ Spreadsheet        |
-| `ods`      | `.ods`   |    ZIP    | multi  | OpenDocument Spreadsheet        |
-| `fods`     | `.fods`  |   none    | multi  | Flat OpenDocument Spreadsheet   |
-| `wk3`      | `.wk3`   |   none    | multi  | Lotus Workbook (WK3)            |
-| `csv`      | `.csv`   |   none    | single | Comma Separated Values          |
-| `txt`      | `.txt`   |   none    | single | UTF-16 Unicode Text (TXT)       |
-| `sylk`     | `.sylk`  |   none    | single | Symbolic Link (SYLK)            |
-| `html`     | `.html`  |   none    | single | HTML Document                   |
-| `dif`      | `.dif`   |   none    | single | Data Interchange Format (DIF)   |
-| `dbf`      | `.dbf`   |   none    | single | dBASE II + VFP Extensions (DBF) |
-| `wk1`      | `.wk1`   |   none    | single | Lotus Worksheet (WK1)           |
-| `rtf`      | `.rtf`   |   none    | single | Rich Text Format (RTF)          |
-| `prn`      | `.prn`   |   none    | single | Lotus Formatted Text            |
-| `eth`      | `.eth`   |   none    | single | Ethercalc Record Format (ETH)   |
-
-- `compression` only applies to formats with ZIP containers.
-- Formats that only support a single sheet require a `sheet` option specifying
-  the worksheet.  If the string is empty, the first worksheet is used.
-- `writeFile` will automatically guess the output file format based on the file
-  extension if `bookType` is not specified.  It will choose the first format in
-  the aforementioned table that matches the extension.
-
-### Output Type
-
-The `type` argument for `write` mirrors the `type` argument for `read`:
-
-| `type`     | output                                                          |
-|------------|-----------------------------------------------------------------|
-| `"base64"` | string: Base64 encoding of the file                             |
-| `"binary"` | string: binary string (byte `n` is `data.charCodeAt(n)`)        |
-| `"string"` | string: JS string (characters interpreted as UTF8)              |
-| `"buffer"` | nodejs Buffer                                                   |
-| `"array"`  | ArrayBuffer, fallback array of 8-bit unsigned int               |
-| `"file"`   | string: path of file that will be created (nodejs only)         |
-
-- For compatibility with Excel, `csv` output will always include the UTF-8 byte
-  order mark.
-
diff --git a/docbits/82_util.md b/docbits/82_util.md
deleted file mode 100644
index 8caa51e..0000000
--- a/docbits/82_util.md
+++ /dev/null
@@ -1,493 +0,0 @@
-## Utility Functions
-
-The `sheet_to_*` functions accept a worksheet and an optional options object.
-
-The `*_to_sheet` functions accept a data object and an optional options object.
-
-The examples are based on the following worksheet:
-
-```
-XXX| A | B | C | D | E | F | G |
----+---+---+---+---+---+---+---+
- 1 | S | h | e | e | t | J | S |
- 2 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
- 3 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
-```
-
-### Array of Arrays Input
-
-`XLSX.utils.aoa_to_sheet` takes an array of arrays of JS values and returns a
-worksheet resembling the input data.  Numbers, Booleans and Strings are stored
-as the corresponding styles.  Dates are stored as date or numbers.  Array holes
-and explicit `undefined` values are skipped.  `null` values may be stubbed. All
-other values are stored as strings.  The function takes an options argument:
-
-| Option Name | Default | Description                                          |
-| :---------- | :-----: | :--------------------------------------------------- |
-|`dateNF`     |  FMT 14 | Use specified date format in string output           |
-|`cellDates`  |  false  | Store dates as type `d` (default is `n`)             |
-|`sheetStubs` |  false  | Create cell objects of type `z` for `null` values    |
-|`nullError`  |  false  | If true, emit `#NULL!` error cells for `null` values |
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-To generate the example sheet:
-
-```js
-var ws = XLSX.utils.aoa_to_sheet([
-  "SheetJS".split(""),
-  [1,2,3,4,5,6,7],
-  [2,3,4,5,6,7,8]
-]);
-```
-</details>
-
-`XLSX.utils.sheet_add_aoa` takes an array of arrays of JS values and updates an
-existing worksheet object.  It follows the same process as `aoa_to_sheet` and
-accepts an options argument:
-
-| Option Name | Default | Description                                          |
-| :---------- | :-----: | :--------------------------------------------------- |
-|`dateNF`     |  FMT 14 | Use specified date format in string output           |
-|`cellDates`  |  false  | Store dates as type `d` (default is `n`)             |
-|`sheetStubs` |  false  | Create cell objects of type `z` for `null` values    |
-|`nullError`  |  false  | If true, emit `#NULL!` error cells for `null` values |
-|`origin`     |         | Use specified cell as starting point (see below)     |
-
-`origin` is expected to be one of:
-
-| `origin`         | Description                                               |
-| :--------------- | :-------------------------------------------------------- |
-| (cell object)    | Use specified cell (cell object)                          |
-| (string)         | Use specified cell (A1-style cell)                        |
-| (number >= 0)    | Start from the first column at specified row (0-indexed)  |
-| -1               | Append to bottom of worksheet starting on first column    |
-| (default)        | Start from cell A1                                        |
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-Consider the worksheet:
-
-```
-XXX| A | B | C | D | E | F | G |
----+---+---+---+---+---+---+---+
- 1 | S | h | e | e | t | J | S |
- 2 | 1 | 2 |   |   | 5 | 6 | 7 |
- 3 | 2 | 3 |   |   | 6 | 7 | 8 |
- 4 | 3 | 4 |   |   | 7 | 8 | 9 |
- 5 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
-```
-
-This worksheet can be built up in the order `A1:G1, A2:B4, E2:G4, A5:G5`:
-
-```js
-/* Initial row */
-var ws = XLSX.utils.aoa_to_sheet([ "SheetJS".split("") ]);
-
-/* Write data starting at A2 */
-XLSX.utils.sheet_add_aoa(ws, [[1,2], [2,3], [3,4]], {origin: "A2"});
-
-/* Write data starting at E2 */
-XLSX.utils.sheet_add_aoa(ws, [[5,6,7], [6,7,8], [7,8,9]], {origin:{r:1, c:4}});
-
-/* Append row */
-XLSX.utils.sheet_add_aoa(ws, [[4,5,6,7,8,9,0]], {origin: -1});
-```
-
-</details>
-
-### Array of Objects Input
-
-`XLSX.utils.json_to_sheet` takes an array of objects and returns a worksheet
-with automatically-generated "headers" based on the keys of the objects.  The
-default column order is determined by the first appearance of the field using
-`Object.keys`.  The function accepts an options argument:
-
-| Option Name | Default | Description                                          |
-| :---------- | :-----: | :--------------------------------------------------- |
-|`header`     |         | Use specified field order (default `Object.keys`) ** |
-|`dateNF`     |  FMT 14 | Use specified date format in string output           |
-|`cellDates`  |  false  | Store dates as type `d` (default is `n`)             |
-|`skipHeader` |  false  | If true, do not include header row in output         |
-|`nullError`  |  false  | If true, emit `#NULL!` error cells for `null` values |
-
-- All fields from each row will be written.  If `header` is an array and it does
-  not contain a particular field, the key will be appended to the array.
-- Cell types are deduced from the type of each value.  For example, a `Date`
-  object will generate a Date cell, while a string will generate a Text cell.
-- Null values will be skipped by default.  If `nullError` is true, an error cell
-  corresponding to `#NULL!` will be written to the worksheet.
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-The original sheet cannot be reproduced using plain objects since JS object keys
-must be unique. After replacing the second `e` and `S` with `e_1` and `S_1`:
-
-```js
-var ws = XLSX.utils.json_to_sheet([
-  { S:1, h:2, e:3, e_1:4, t:5, J:6, S_1:7 },
-  { S:2, h:3, e:4, e_1:5, t:6, J:7, S_1:8 }
-], {header:["S","h","e","e_1","t","J","S_1"]});
-```
-
-Alternatively, the header row can be skipped:
-
-```js
-var ws = XLSX.utils.json_to_sheet([
-  { A:"S", B:"h", C:"e", D:"e", E:"t", F:"J", G:"S" },
-  { A: 1,  B: 2,  C: 3,  D: 4,  E: 5,  F: 6,  G: 7  },
-  { A: 2,  B: 3,  C: 4,  D: 5,  E: 6,  F: 7,  G: 8  }
-], {header:["A","B","C","D","E","F","G"], skipHeader:true});
-```
-
-</details>
-
-`XLSX.utils.sheet_add_json` takes an array of objects and updates an existing
-worksheet object.  It follows the same process as `json_to_sheet` and accepts
-an options argument:
-
-| Option Name | Default | Description                                          |
-| :---------- | :-----: | :--------------------------------------------------- |
-|`header`     |         | Use specified column order (default `Object.keys`)   |
-|`dateNF`     |  FMT 14 | Use specified date format in string output           |
-|`cellDates`  |  false  | Store dates as type `d` (default is `n`)             |
-|`skipHeader` |  false  | If true, do not include header row in output         |
-|`nullError`  |  false  | If true, emit `#NULL!` error cells for `null` values |
-|`origin`     |         | Use specified cell as starting point (see below)     |
-
-`origin` is expected to be one of:
-
-| `origin`         | Description                                               |
-| :--------------- | :-------------------------------------------------------- |
-| (cell object)    | Use specified cell (cell object)                          |
-| (string)         | Use specified cell (A1-style cell)                        |
-| (number >= 0)    | Start from the first column at specified row (0-indexed)  |
-| -1               | Append to bottom of worksheet starting on first column    |
-| (default)        | Start from cell A1                                        |
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-Consider the worksheet:
-
-```
-XXX| A | B | C | D | E | F | G |
----+---+---+---+---+---+---+---+
- 1 | S | h | e | e | t | J | S |
- 2 | 1 | 2 |   |   | 5 | 6 | 7 |
- 3 | 2 | 3 |   |   | 6 | 7 | 8 |
- 4 | 3 | 4 |   |   | 7 | 8 | 9 |
- 5 | 4 | 5 | 6 | 7 | 8 | 9 | 0 |
-```
-
-This worksheet can be built up in the order `A1:G1, A2:B4, E2:G4, A5:G5`:
-
-```js
-/* Initial row */
-var ws = XLSX.utils.json_to_sheet([
-  { A: "S", B: "h", C: "e", D: "e", E: "t", F: "J", G: "S" }
-], {header: ["A", "B", "C", "D", "E", "F", "G"], skipHeader: true});
-
-/* Write data starting at A2 */
-XLSX.utils.sheet_add_json(ws, [
-  { A: 1, B: 2 }, { A: 2, B: 3 }, { A: 3, B: 4 }
-], {skipHeader: true, origin: "A2"});
-
-/* Write data starting at E2 */
-XLSX.utils.sheet_add_json(ws, [
-  { A: 5, B: 6, C: 7 }, { A: 6, B: 7, C: 8 }, { A: 7, B: 8, C: 9 }
-], {skipHeader: true, origin: { r: 1, c: 4 }, header: [ "A", "B", "C" ]});
-
-/* Append row */
-XLSX.utils.sheet_add_json(ws, [
-  { A: 4, B: 5, C: 6, D: 7, E: 8, F: 9, G: 0 }
-], {header: ["A", "B", "C", "D", "E", "F", "G"], skipHeader: true, origin: -1});
-```
-
-</details>
-
-### HTML Table Input
-
-`XLSX.utils.table_to_sheet` takes a table DOM element and returns a worksheet
-resembling the input table.  Numbers are parsed.  All other data will be stored
-as strings.
-
-`XLSX.utils.table_to_book` produces a minimal workbook based on the worksheet.
-
-Both functions accept options arguments:
-
-| Option Name |  Default | Description                                         |
-| :---------- | :------: | :-------------------------------------------------- |
-|`raw`        |          | If true, every cell will hold raw strings           |
-|`dateNF`     |  FMT 14  | Use specified date format in string output          |
-|`cellDates`  |  false   | Store dates as type `d` (default is `n`)            |
-|`sheetRows`  |    0     | If >0, read the first `sheetRows` rows of the table |
-|`display`    |  false   | If true, hidden rows and cells will not be parsed   |
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-To generate the example sheet, start with the HTML table:
-
-```html
-<table id="sheetjs">
-<tr><td>S</td><td>h</td><td>e</td><td>e</td><td>t</td><td>J</td><td>S</td></tr>
-<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td></tr>
-<tr><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td><td>8</td></tr>
-</table>
-```
-
-To process the table:
-
-```js
-var tbl = document.getElementById('sheetjs');
-var wb = XLSX.utils.table_to_book(tbl);
-```
-</details>
-
-Note: `XLSX.read` can handle HTML represented as strings.
-
-
-`XLSX.utils.sheet_add_dom` takes a table DOM element and updates an existing
-worksheet object.  It follows the same process as `table_to_sheet` and accepts
-an options argument:
-
-| Option Name |  Default | Description                                         |
-| :---------- | :------: | :-------------------------------------------------- |
-|`raw`        |          | If true, every cell will hold raw strings           |
-|`dateNF`     |  FMT 14  | Use specified date format in string output          |
-|`cellDates`  |  false   | Store dates as type `d` (default is `n`)            |
-|`sheetRows`  |    0     | If >0, read the first `sheetRows` rows of the table |
-|`display`    |  false   | If true, hidden rows and cells will not be parsed   |
-
-`origin` is expected to be one of:
-
-| `origin`         | Description                                               |
-| :--------------- | :-------------------------------------------------------- |
-| (cell object)    | Use specified cell (cell object)                          |
-| (string)         | Use specified cell (A1-style cell)                        |
-| (number >= 0)    | Start from the first column at specified row (0-indexed)  |
-| -1               | Append to bottom of worksheet starting on first column    |
-| (default)        | Start from cell A1                                        |
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-A small helper function can create gap rows between tables:
-
-```js
-function create_gap_rows(ws, nrows) {
-  var ref = XLSX.utils.decode_range(ws["!ref"]);       // get original range
-  ref.e.r += nrows;                                    // add to ending row
-  ws["!ref"] = XLSX.utils.encode_range(ref);           // reassign row
-}
-
-/* first table */
-var ws = XLSX.utils.table_to_sheet(document.getElementById('table1'));
-create_gap_rows(ws, 1); // one row gap after first table
-
-/* second table */
-XLSX.utils.sheet_add_dom(ws, document.getElementById('table2'), {origin: -1});
-create_gap_rows(ws, 3); // three rows gap after second table
-
-/* third table */
-XLSX.utils.sheet_add_dom(ws, document.getElementById('table3'), {origin: -1});
-```
-
-</details>
-
-### Formulae Output
-
-`XLSX.utils.sheet_to_formulae` generates an array of commands that represent
-how a person would enter data into an application.  Each entry is of the form
-`A1-cell-address=formula-or-value`.  String literals are prefixed with a `'` in
-accordance with Excel.
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-For the example sheet:
-
-```js
-> var o = XLSX.utils.sheet_to_formulae(ws);
-> [o[0], o[5], o[10], o[15], o[20]];
-[ 'A1=\'S', 'F1=\'J', 'D2=4', 'B3=3', 'G3=8' ]
-```
-</details>
-
-### Delimiter-Separated Output
-
-As an alternative to the `writeFile` CSV type, `XLSX.utils.sheet_to_csv` also
-produces CSV output.  The function takes an options argument:
-
-| Option Name  |  Default | Description                                        |
-| :----------- | :------: | :------------------------------------------------- |
-|`FS`          |  `","`   | "Field Separator"  delimiter between fields        |
-|`RS`          |  `"\n"`  | "Record Separator" delimiter between rows          |
-|`dateNF`      |  FMT 14  | Use specified date format in string output         |
-|`strip`       |  false   | Remove trailing field separators in each record ** |
-|`blankrows`   |  true    | Include blank lines in the CSV output              |
-|`skipHidden`  |  false   | Skips hidden rows/columns in the CSV output        |
-|`forceQuotes` |  false   | Force quotes around fields                         |
-
-- `strip` will remove trailing commas from each line under default `FS/RS`
-- `blankrows` must be set to `false` to skip blank lines.
-- Fields containing the record or field separator will automatically be wrapped
-  in double quotes; `forceQuotes` forces all cells to be wrapped in quotes.
-- `XLSX.write` with `csv` type will always prepend the UTF-8 byte-order mark for
-  Excel compatibility.  `sheet_to_csv` returns a JS string and omits the mark.
-  Using `XLSX.write` with type `string` will also skip the mark.
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-For the example sheet:
-
-```js
-> console.log(XLSX.utils.sheet_to_csv(ws));
-S,h,e,e,t,J,S
-1,2,3,4,5,6,7
-2,3,4,5,6,7,8
-> console.log(XLSX.utils.sheet_to_csv(ws, {FS:"\t"}));
-S	h	e	e	t	J	S
-1	2	3	4	5	6	7
-2	3	4	5	6	7	8
-> console.log(XLSX.utils.sheet_to_csv(ws,{FS:":",RS:"|"}));
-S:h:e:e:t:J:S|1:2:3:4:5:6:7|2:3:4:5:6:7:8|
-```
-</details>
-
-#### UTF-16 Unicode Text
-
-The `txt` output type uses the tab character as the field separator.  If the
-`codepage` library is available (included in full distribution but not core),
-the output will be encoded in `CP1200` and the BOM will be prepended.
-
-`XLSX.utils.sheet_to_txt` takes the same arguments as `sheet_to_csv`.
-
-### HTML Output
-
-As an alternative to the `writeFile` HTML type, `XLSX.utils.sheet_to_html` also
-produces HTML output.  The function takes an options argument:
-
-| Option Name |  Default | Description                                         |
-| :---------- | :------: | :-------------------------------------------------- |
-|`id`         |          | Specify the `id` attribute for the `TABLE` element  |
-|`editable`   |  false   | If true, set `contenteditable="true"` for every TD  |
-|`header`     |          | Override header (default `html body`)               |
-|`footer`     |          | Override footer (default `/body /html`)             |
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-For the example sheet:
-
-```js
-> console.log(XLSX.utils.sheet_to_html(ws));
-// ...
-```
-</details>
-
-### JSON
-
-`XLSX.utils.sheet_to_json` generates different types of JS objects. The function
-takes an options argument:
-
-| Option Name |  Default | Description                                         |
-| :---------- | :------: | :-------------------------------------------------- |
-|`raw`        | `true`   | Use raw values (true) or formatted strings (false)  |
-|`range`      | from WS  | Override Range (see table below)                    |
-|`header`     |          | Control output format (see table below)             |
-|`dateNF`     |  FMT 14  | Use specified date format in string output          |
-|`defval`     |          | Use specified value in place of null or undefined   |
-|`blankrows`  |    **    | Include blank lines in the output **                |
-
-- `raw` only affects cells which have a format code (`.z`) field or a formatted
-  text (`.w`) field.
-- If `header` is specified, the first row is considered a data row; if `header`
-  is not specified, the first row is the header row and not considered data.
-- When `header` is not specified, the conversion will automatically disambiguate
-  header entries by affixing `_` and a count starting at `1`.  For example, if
-  three columns have header `foo` the output fields are `foo`, `foo_1`, `foo_2`
-- `null` values are returned when `raw` is true but are skipped when false.
-- If `defval` is not specified, null and undefined values are skipped normally.
-  If specified, all null and undefined points will be filled with `defval`
-- When `header` is `1`, the default is to generate blank rows.  `blankrows` must
-  be set to `false` to skip blank rows.
-- When `header` is not `1`, the default is to skip blank rows.  `blankrows` must
-  be true to generate blank rows
-
-`range` is expected to be one of:
-
-| `range`          | Description                                               |
-| :--------------- | :-------------------------------------------------------- |
-| (number)         | Use worksheet range but set starting row to the value     |
-| (string)         | Use specified range (A1-style bounded range string)       |
-| (default)        | Use worksheet range (`ws['!ref']`)                        |
-
-`header` is expected to be one of:
-
-| `header`         | Description                                               |
-| :--------------- | :-------------------------------------------------------- |
-| `1`              | Generate an array of arrays ("2D Array")                  |
-| `"A"`            | Row object keys are literal column labels                 |
-| array of strings | Use specified strings as keys in row objects              |
-| (default)        | Read and disambiguate first row as keys                   |
-
-- If header is not `1`, the row object will contain the non-enumerable property
-  `__rowNum__` that represents the row of the sheet corresponding to the entry.
-- If header is an array, the keys will not be disambiguated.  This can lead to
-  unexpected results if the array values are not unique!
-
-
-<details>
-  <summary><b>Examples</b> (click to show)</summary>
-
-For the example sheet:
-
-```js
-> XLSX.utils.sheet_to_json(ws);
-[ { S: 1, h: 2, e: 3, e_1: 4, t: 5, J: 6, S_1: 7 },
-  { S: 2, h: 3, e: 4, e_1: 5, t: 6, J: 7, S_1: 8 } ]
-
-> XLSX.utils.sheet_to_json(ws, {header:"A"});
-[ { A: 'S', B: 'h', C: 'e', D: 'e', E: 't', F: 'J', G: 'S' },
-  { A: '1', B: '2', C: '3', D: '4', E: '5', F: '6', G: '7' },
-  { A: '2', B: '3', C: '4', D: '5', E: '6', F: '7', G: '8' } ]
-
-> XLSX.utils.sheet_to_json(ws, {header:["A","E","I","O","U","6","9"]});
-[ { '6': 'J', '9': 'S', A: 'S', E: 'h', I: 'e', O: 'e', U: 't' },
-  { '6': '6', '9': '7', A: '1', E: '2', I: '3', O: '4', U: '5' },
-  { '6': '7', '9': '8', A: '2', E: '3', I: '4', O: '5', U: '6' } ]
-
-> XLSX.utils.sheet_to_json(ws, {header:1});
-[ [ 'S', 'h', 'e', 'e', 't', 'J', 'S' ],
-  [ '1', '2', '3', '4', '5', '6', '7' ],
-  [ '2', '3', '4', '5', '6', '7', '8' ] ]
-```
-
-Example showing the effect of `raw`:
-
-```js
-> ws['A2'].w = "3";                          // set A2 formatted string value
-
-> XLSX.utils.sheet_to_json(ws, {header:1, raw:false});
-[ [ 'S', 'h', 'e', 'e', 't', 'J', 'S' ],
-  [ '3', '2', '3', '4', '5', '6', '7' ],     // <-- A2 uses the formatted string
-  [ '2', '3', '4', '5', '6', '7', '8' ] ]
-
-> XLSX.utils.sheet_to_json(ws, {header:1});
-[ [ 'S', 'h', 'e', 'e', 't', 'J', 'S' ],
-  [ 1, 2, 3, 4, 5, 6, 7 ],                   // <-- A2 uses the raw value
-  [ 2, 3, 4, 5, 6, 7, 8 ] ]
-```
-</details>
-
diff --git a/docbits/85_filetype.md b/docbits/85_filetype.md
deleted file mode 100644
index 5f30dae..0000000
--- a/docbits/85_filetype.md
+++ /dev/null
@@ -1,256 +0,0 @@
-## File Formats
-
-Despite the library name `xlsx`, it supports numerous spreadsheet file formats:
-
-| Format                                                       | Read  | Write |
-|:-------------------------------------------------------------|:-----:|:-----:|
-| **Excel Worksheet/Workbook Formats**                         |:-----:|:-----:|
-| Excel 2007+ XML Formats (XLSX/XLSM)                          |   ✔   |   ✔   |
-| Excel 2007+ Binary Format (XLSB BIFF12)                      |   ✔   |   ✔   |
-| Excel 2003-2004 XML Format (XML "SpreadsheetML")             |   ✔   |   ✔   |
-| Excel 97-2004 (XLS BIFF8)                                    |   ✔   |   ✔   |
-| Excel 5.0/95 (XLS BIFF5)                                     |   ✔   |   ✔   |
-| Excel 4.0 (XLS/XLW BIFF4)                                    |   ✔   |   ✔   |
-| Excel 3.0 (XLS BIFF3)                                        |   ✔   |   ✔   |
-| Excel 2.0/2.1 / Multiplan 4.x DOS (XLS BIFF2)                |   ✔   |   ✔   |
-| **Excel Supported Text Formats**                             |:-----:|:-----:|
-| Delimiter-Separated Values (CSV/TXT)                         |   ✔   |   ✔   |
-| Data Interchange Format (DIF)                                |   ✔   |   ✔   |
-| Symbolic Link (SYLK/SLK)                                     |   ✔   |   ✔   |
-| Lotus Formatted Text (PRN)                                   |   ✔   |   ✔   |
-| UTF-16 Unicode Text (TXT)                                    |   ✔   |   ✔   |
-| **Other Workbook/Worksheet Formats**                         |:-----:|:-----:|
-| Numbers 3.0+ / iWork 2013+ Spreadsheet (NUMBERS)             |   ✔   |   ✔   |
-| OpenDocument Spreadsheet (ODS)                               |   ✔   |   ✔   |
-| Flat XML ODF Spreadsheet (FODS)                              |   ✔   |   ✔   |
-| Uniform Office Format Spreadsheet (标文通 UOS1/UOS2)         |   ✔   |       |
-| dBASE II/III/IV / Visual FoxPro (DBF)                        |   ✔   |   ✔   |
-| Lotus 1-2-3 (WK1/WK3)                                        |   ✔   |   ✔   |
-| Lotus 1-2-3 (WKS/WK2/WK4/123)                                |   ✔   |       |
-| Quattro Pro Spreadsheet (WQ1/WQ2/WB1/WB2/WB3/QPW)            |   ✔   |       |
-| Works 1.x-3.x DOS / 2.x-5.x Windows Spreadsheet (WKS)        |   ✔   |       |
-| Works 6.x-9.x Spreadsheet (XLR)                              |   ✔   |       |
-| **Other Common Spreadsheet Output Formats**                  |:-----:|:-----:|
-| HTML Tables                                                  |   ✔   |   ✔   |
-| Rich Text Format tables (RTF)                                |       |   ✔   |
-| Ethercalc Record Format (ETH)                                |   ✔   |   ✔   |
-
-Features not supported by a given file format will not be written.  Formats with
-range limits will be silently truncated:
-
-| Format                                    | Last Cell  | Max Cols | Max Rows |
-|:------------------------------------------|:-----------|---------:|---------:|
-| Excel 2007+ XML Formats (XLSX/XLSM)       | XFD1048576 |    16384 |  1048576 |
-| Excel 2007+ Binary Format (XLSB BIFF12)   | XFD1048576 |    16384 |  1048576 |
-| Numbers 12.0 (NUMBERS)                    | ALL1000000 |     1000 |  1000000 |
-| Quattro Pro 9+ (QPW)                      | IV1000000  |      256 |  1000000 |
-| Excel 97-2004 (XLS BIFF8)                 | IV65536    |      256 |    65536 |
-| Excel 5.0/95 (XLS BIFF5)                  | IV16384    |      256 |    16384 |
-| Excel 4.0 (XLS BIFF4)                     | IV16384    |      256 |    16384 |
-| Excel 3.0 (XLS BIFF3)                     | IV16384    |      256 |    16384 |
-| Excel 2.0/2.1 (XLS BIFF2)                 | IV16384    |      256 |    16384 |
-| Lotus 1-2-3 R2 - R5 (WK1/WK3/WK4)         | IV8192     |      256 |     8192 |
-| Lotus 1-2-3 R1 (WKS)                      | IV2048     |      256 |     2048 |
-
-Excel 2003 SpreadsheetML range limits are governed by the version of Excel and
-are not enforced by the writer.
-
-<details>
-  <summary><b>File Format Details</b> (click to show)</summary>
-
-**Core Spreadsheet Formats**
-
-- **Excel 2007+ XML (XLSX/XLSM)**
-
-XLSX and XLSM files are ZIP containers containing a series of XML files in
-accordance with the Open Packaging Conventions (OPC).  The XLSM format, almost
-identical to XLSX, is used for files containing macros.
-
-The format is standardized in ECMA-376 and later in ISO/IEC 29500.  Excel does
-not follow the specification, and there are additional documents discussing how
-Excel deviates from the specification.
-
-- **Excel 2.0-95 (BIFF2/BIFF3/BIFF4/BIFF5)**
-
-BIFF 2/3 XLS are single-sheet streams of binary records.  Excel 4 introduced
-the concept of a workbook (`XLW` files) but also had single-sheet `XLS` format.
-The structure is largely similar to the Lotus 1-2-3 file formats.  BIFF5/8/12
-extended the format in various ways but largely stuck to the same record format.
-
-Multiplan 4 "Normal" files are identical in structure to BIFF2 and use the same
-cell value records.  There are some different record types for more advanced
-features like Print Settings.  The BIFF2 writer generates files that can be read
-in Multiplan 4 and the parser can extract values from "Normal" files.
-
-There is no official specification for any of these formats.  Excel 95 can write
-files in these formats, so record lengths and fields were determined by writing
-in all of the supported formats and comparing files.  Excel 2016 can generate
-BIFF5 files, enabling a full suite of file tests starting from XLSX or BIFF2.
-
-- **Excel 97-2004 Binary (BIFF8)**
-
-BIFF8 exclusively uses the Compound File Binary container format, splitting some
-content into streams within the file.  At its core, it still uses an extended
-version of the binary record format from older versions of BIFF.
-
-The `MS-XLS` specification covers the basics of the file format, and other
-specifications expand on serialization of features like properties.
-
-- **Excel 2003-2004 (SpreadsheetML)**
-
-Predating XLSX, SpreadsheetML files are simple XML files.  There is no official
-and comprehensive specification, although MS has released documentation on the
-format.  Since Excel 2016 can generate SpreadsheetML files, mapping features is
-pretty straightforward.
-
-- **Excel 2007+ Binary (XLSB, BIFF12)**
-
-Introduced in parallel with XLSX, the XLSB format combines the BIFF architecture
-with the content separation and ZIP container of XLSX.  For the most part nodes
-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.
-
-- **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. The
-writer proactively generates cells for formulae if values are unavailable.
-
-Excel TXT uses tab as the delimiter and code page 1200.
-
-Like in Excel, files starting with `0x49 0x44 ("ID")` are treated as Symbolic
-Link files.  Unlike Excel, if the file does not have a valid SYLK header, it
-will be proactively reinterpreted as CSV.  There are some files with semicolon
-delimiter that align with a valid SYLK file.  For the broadest compatibility,
-all cells with the value of `ID` are automatically wrapped in double-quotes.
-
-**Miscellaneous Workbook Formats**
-
-Support for other formats is generally far behind XLS/XLSB/XLSX support, due in
-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 specification decades ago covering the original WK1 format.  Other
-features were deduced by producing files and comparing to Excel support.
-
-Generated WK1 worksheets are compatible with Lotus 1-2-3 R2 and Excel 5.0.
-
-Generated WK3 workbooks are compatible with Lotus 1-2-3 R9 and Excel 5.0.
-
-- **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.
-
-- **Works for DOS / Windows Spreadsheet (WKS/XLR)**
-
-All versions of Works were limited to a single worksheet.
-
-Works for DOS 1.x - 3.x and Works for Windows 2.x extends the Lotus WKS format
-with additional record types.
-
-Works for Windows 3.x - 5.x uses the same format and WKS extension.  The BOF
-record has type `FF`
-
-Works for Windows 6.x - 9.x use the XLR format.  XLR is nearly identical to
-BIFF8 XLS: it uses the CFB container with a Workbook stream.  Works 9 saves the
-exact Workbook stream for the XLR and the 97-2003 XLS export.  Works 6 XLS
-includes two empty worksheets but the main worksheet has an identical encoding.
-XLR also includes a `WksSSWorkBook` stream similar to Lotus FM3/FMT files.
-
-- **Numbers 3.0+ / iWork 2013+ Spreadsheet (NUMBERS)**
-
-iWork 2013 (Numbers 3.0 / Pages 5.0 / Keynote 6.0) switched from a proprietary
-XML-based format to the current file format based on the iWork Archive (IWA).
-This format has been used up through the current release (Numbers 11.2).
-
-The parser focuses on extracting raw data from tables.  Numbers technically
-supports multiple tables in a logical worksheet, including custom titles.  This
-parser will generate one worksheet per Numbers table.
-
-The writer currently exports a small range from the first worksheet.
-
-- **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
-add undocumented extensions.  The parsers and writers do not implement the full
-standard, instead focusing on parts necessary to extract and store raw data.
-
-- **Uniform Office Spreadsheet (UOS1/2)**
-
-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
-is in the names of tags and attributes.
-
-**Miscellaneous Worksheet Formats**
-
-Many older formats supported only one worksheet:
-
-- **dBASE and Visual FoxPro (DBF)**
-
-DBF is really a typed table format: each column can only hold one data type and
-each record omits type information.  The parser generates a header row and
-inserts records starting at the second row of the worksheet.  The writer makes
-files compatible with Visual FoxPro extensions.
-
-Multi-file extensions like external memos and tables are currently unsupported,
-limited by the general ability to read arbitrary files in the web browser.  The
-reader understands DBF Level 7 extensions like DATETIME.
-
-- **Symbolic Link (SYLK)**
-
-<https://oss.sheetjs.com/notes/sylk/> is an informal specification based on our
-experimentation and previous documentation efforts.
-
-- **Lotus Formatted Text (PRN)**
-
-There is no real documentation, and in fact Excel treats PRN as an output-only
-file format.  Nevertheless we can guess the column widths and reverse-engineer
-the original layout.  Excel's 240 character width limitation is not enforced.
-
-- **Data Interchange Format (DIF)**
-
-There is no unified definition.  Visicalc DIF differs from Lotus DIF, and both
-differ from Excel DIF.  Where ambiguous, the parser/writer follows the expected
-behavior from Excel.  In particular, Excel extends DIF in incompatible ways:
-
-- Since Excel automatically converts numbers-as-strings to numbers, numeric
-  string constants are converted to formulae: `"0.3" -> "=""0.3""`
-- DIF technically expects numeric cells to hold the raw numeric data, but Excel
-  permits formatted numbers (including dates)
-- DIF technically has no support for formulae, but Excel will automatically
-  convert plain formulae.  Array formulae are not preserved.
-
-- **HTML**
-
-Excel HTML worksheets include special metadata encoded in styles.  For example,
-`mso-number-format` is a localized string containing the number format.  Despite
-the metadata the output is valid HTML, although it does accept bare `&` symbols.
-
-The writer adds type metadata to the TD elements via the `t` tag.  The parser
-looks for those tags and overrides the default interpretation. For example, text
-like `<td>12345</td>` will be parsed as numbers but `<td t="s">12345</td>` will
-be parsed as text.
-
-- **Rich Text Format (RTF)**
-
-Excel RTF worksheets are stored in clipboard when copying cells or ranges from a
-worksheet.  The supported codes are a subset of the Word RTF support.
-
-- **Ethercalc Record Format (ETH)**
-
-[Ethercalc](https://ethercalc.net/) is an open source web spreadsheet powered by
-a record format reminiscent of SYLK wrapped in a MIME multi-part message.
-
-</details>
-
-
diff --git a/docbits/90_test.md b/docbits/90_test.md
deleted file mode 100644
index 0720a82..0000000
--- a/docbits/90_test.md
+++ /dev/null
@@ -1,105 +0,0 @@
-## Testing
-
-### Node
-
-<details>
-  <summary>(click to show)</summary>
-
-`make test` will run the node-based tests.  By default it runs tests on files in
-every supported format.  To test a specific file type, set `FMTS` to the format
-you want to test.  Feature-specific tests are available with `make test_misc`
-
-```bash
-$ make test_misc   # run core tests
-$ make test        # run full tests
-$ make test_xls    # only use the XLS test files
-$ make test_xlsx   # only use the XLSX test files
-$ make test_xlsb   # only use the XLSB test files
-$ make test_xml    # only use the XML test files
-$ make test_ods    # only use the ODS test files
-```
-
-To enable all errors, set the environment variable `WTF=1`:
-
-```bash
-$ make test        # run full tests
-$ WTF=1 make test  # enable all error messages
-```
-
-`flow` and `eslint` checks are available:
-
-```bash
-$ make lint        # eslint checks
-$ make flow        # make lint + Flow checking
-$ make tslint      # check TS definitions
-```
-
-</details>
-
-### Browser
-
-<details>
-  <summary>(click to show)</summary>
-
-The core in-browser tests are available at `tests/index.html` within this repo.
-Start a local server and navigate to that directory to run the tests.
-`make ctestserv` will start a server on port 8000.
-
-`make ctest` will generate the browser fixtures.  To add more files, edit the
-`tests/fixtures.lst` file and add the paths.
-
-To run the full in-browser tests, clone the repo for
-[`oss.sheetjs.com`](https://github.com/SheetJS/SheetJS.github.io) and replace
-the `xlsx.js` file (then open a browser window and go to `stress.html`):
-
-```bash
-$ cp xlsx.js ../SheetJS.github.io
-$ cd ../SheetJS.github.io
-$ simplehttpserver # or "python -mSimpleHTTPServer" or "serve"
-$ open -a Chromium.app http://localhost:8000/stress.html
-```
-</details>
-
-### Tested Environments
-
-<details>
-  <summary>(click to show)</summary>
-
- - NodeJS `0.8`, `0.10`, `0.12`, `4.x`, `5.x`, `6.x`, `7.x`, `8.x`
- - IE 6/7/8/9/10/11 (IE 6-9 require shims)
- - Chrome 24+ (including Android 4.0+)
- - Safari 6+ (iOS and Desktop)
- - Edge 13+, FF 18+, and Opera 12+
-
-Tests utilize the mocha testing framework.
-
- - <https://saucelabs.com/u/sheetjs> for XLS\* modules using Sauce Labs
-
-The test suite also includes tests for various time zones.  To change
-the timezone locally, set the TZ environment variable:
-
-```bash
-$ env TZ="Asia/Kolkata" WTF=1 make test_misc
-```
-
-</details>
-
-### Test Files
-
-Test files are housed in [another repo](https://github.com/SheetJS/test_files).
-
-Running `make init` will refresh the `test_files` submodule and get the files.
-Note that this requires `svn`, `git`, `hg` and other commands that may not be
-available.  If `make init` fails, please download the latest version of the test
-files snapshot from [the repo](https://github.com/SheetJS/test_files/releases)
-
-<details>
-  <summary><b>Latest Snapshot</b> (click to show)</summary>
-
-Latest test files snapshot:
-<http://github.com/SheetJS/test_files/releases/download/20170409/test_files.zip>
-
-(download and unzip to the `test_files` subdirectory)
-
-</details>
-
diff --git a/docbits/95_contrib.md b/docbits/95_contrib.md
deleted file mode 100644
index ff8950c..0000000
--- a/docbits/95_contrib.md
+++ /dev/null
@@ -1,121 +0,0 @@
-## Contributing
-
-Due to the precarious nature of the Open Specifications Promise, it is very
-important to ensure code is cleanroom.  [Contribution Notes](CONTRIBUTING.md)
-
-<details>
-  <summary><b>File organization</b> (click to show)</summary>
-
-At a high level, the final script is a concatenation of the individual files in
-the `bits` folder.  Running `make` should reproduce the final output on all
-platforms.  The README is similarly split into bits in the `docbits` folder.
-
-Folders:
-
-| folder       | contents                                                      |
-|:-------------|:--------------------------------------------------------------|
-| `bits`       | raw source files that make up the final script                |
-| `docbits`    | raw markdown files that make up `README.md`                   |
-| `bin`        | server-side bin scripts (`xlsx.njs`)                          |
-| `dist`       | dist files for web browsers and nonstandard JS environments   |
-| `demos`      | demo projects for platforms like ExtendScript and Webpack     |
-| `tests`      | browser tests (run `make ctest` to rebuild)                   |
-| `types`      | typescript definitions and tests                              |
-| `misc`       | miscellaneous supporting scripts                              |
-| `test_files` | test files (pulled from the test files repository)            |
-
-</details>
-
-After cloning the repo, running `make help` will display a list of commands.
-
-### OSX/Linux
-
-<details>
-  <summary>(click to show)</summary>
-
-The `xlsx.js` file is constructed from the files in the `bits` subdirectory. The
-build script (run `make`) will concatenate the individual bits to produce the
-script.  Before submitting a contribution, ensure that running make will produce
-the `xlsx.js` file exactly.  The simplest way to test is to add the script:
-
-```bash
-$ git add xlsx.js
-$ make clean
-$ make
-$ git diff xlsx.js
-```
-
-To produce the dist files, run `make dist`.  The dist files are updated in each
-version release and *should not be committed between versions*.
-</details>
-
-### Windows
-
-<details>
-  <summary>(click to show)</summary>
-
-The included `make.cmd` script will build `xlsx.js` from the `bits` directory.
-Building is as simple as:
-
-```cmd
-> make
-```
-
-To prepare development environment:
-
-```cmd
-> make init
-```
-
-The full list of commands available in Windows are displayed in `make help`:
-
-```
-make init -- install deps and global modules
-make lint -- run eslint linter
-make test -- run mocha test suite
-make misc -- run smaller test suite
-make book -- rebuild README and summary
-make help -- display this message
-```
-
-As explained in [Test Files](#test-files), on Windows the release ZIP file must
-be downloaded and extracted.  If Bash on Windows is available, it is possible
-to run the OSX/Linux workflow.  The following steps prepares the environment:
-
-```bash
-# Install support programs for the build and test commands
-sudo apt-get install make git subversion mercurial
-
-# Install nodejs and NPM within the WSL
-wget -qO- https://deb.nodesource.com/setup_8.x | sudo bash
-sudo apt-get install nodejs
-
-# Install dev dependencies
-sudo npm install -g mocha voc blanket xlsjs
-```
-
-</details>
-
-### Tests
-
-<details>
-  <summary>(click to show)</summary>
-
-The `test_misc` target (`make test_misc` on Linux/OSX / `make misc` on Windows)
-runs the targeted feature tests.  It should take 5-10 seconds to perform feature
-tests without testing against the entire test battery.  New features should be
-accompanied with tests for the relevant file formats and features.
-
-For tests involving the read side, an appropriate feature test would involve
-reading an existing file and checking the resulting workbook object.  If a
-parameter is involved, files should be read with different values to verify that
-the feature is working as expected.
-
-For tests involving a new write feature which can already be parsed, appropriate
-feature tests would involve writing a workbook with the feature and then opening
-and verifying that the feature is preserved.
-
-For tests involving a new write feature without an existing read ability, please
-add a feature test to the kitchen sink `tests/write.js`.
-</details>
-
diff --git a/docbits/97_license.md b/docbits/97_license.md
deleted file mode 100644
index a13d311..0000000
--- a/docbits/97_license.md
+++ /dev/null
@@ -1,6 +0,0 @@
-## License
-
-Please consult the attached LICENSE file for details.  All rights not explicitly
-granted by the Apache 2.0 License are reserved by the Original Author.
-
-
diff --git a/docbits/98_reference.md b/docbits/98_reference.md
deleted file mode 100644
index c70b4e8..0000000
--- a/docbits/98_reference.md
+++ /dev/null
@@ -1,31 +0,0 @@
-## References
-
-<details>
-  <summary><b>OSP-covered Specifications</b> (click to show)</summary>
-
- - `MS-CFB`: Compound File Binary File Format
- - `MS-CTXLS`: Excel Custom Toolbar Binary File Format
- - `MS-EXSPXML3`: Excel Calculation Version 2 Web Service XML Schema
- - `MS-ODATA`: Open Data Protocol (OData)
- - `MS-ODRAW`: Office Drawing Binary File Format
- - `MS-ODRAWXML`: Office Drawing Extensions to Office Open XML Structure
- - `MS-OE376`: Office Implementation Information for ECMA-376 Standards Support
- - `MS-OFFCRYPTO`: Office Document Cryptography Structure
- - `MS-OI29500`: Office Implementation Information for ISO/IEC 29500 Standards Support
- - `MS-OLEDS`: Object Linking and Embedding (OLE) Data Structures
- - `MS-OLEPS`: Object Linking and Embedding (OLE) Property Set Data Structures
- - `MS-OODF3`: Office Implementation Information for ODF 1.2 Standards Support
- - `MS-OSHARED`: Office Common Data Types and Objects Structures
- - `MS-OVBA`: Office VBA File Format Structure
- - `MS-XLDM`: Spreadsheet Data Model File Format
- - `MS-XLS`: Excel Binary File Format (.xls) Structure Specification
- - `MS-XLSB`: Excel (.xlsb) Binary File Format
- - `MS-XLSX`: Excel (.xlsx) Extensions to the Office Open XML SpreadsheetML File Format
- - `XLS`: Microsoft Office Excel 97-2007 Binary File Format Specification
- - `RTF`: Rich Text Format
-
-</details>
-
-- ISO/IEC 29500:2012(E) "Information technology — Document description and processing languages — Office Open XML File Formats"
-- Open Document Format for Office Applications Version 1.2 (29 September 2011)
-- Worksheet File Format (From Lotus) December 1984
diff --git a/docz/docs/07-csf/07-features/06-nf.md b/docz/docs/07-csf/07-features/06-nf.md
index 62f6439..d1d6748 100644
--- a/docz/docs/07-csf/07-features/06-nf.md
+++ b/docz/docs/07-csf/07-features/06-nf.md
@@ -7,12 +7,14 @@ sidebar_position: 6
 <details>
   <summary><b>File Format Support</b> (click to show)</summary>
 
-[Date and Time support](/docs/csf/features/dates) requires limited number format
-support to distinguish date or time codes from standard numeric data.
+Modern applications separate "content" from "presentation". A value like `$3.50`
+is typically stored as the underlying value (`3.50`) with a format (`$0.00`).
+Parsers are expected to render values using the respective number formats.
 
-Legacy formats like CSV mix "content" and "presentation". There is no true
-concept of a "number format" distinct from the number itself. For specific
-formats, the library will guess the number format.
+Text-based file formats like CSV and HTML mix content and presentation. `$3.50`
+is stored as the formatted value. The formatted values can be generated from
+many different values and number formats. SheetJS parsers expose options to
+control value parsing and number format speculation.
 
 | Formats           | Basic | Storage Representation |
 |:------------------|:-----:|:-----------------------|
@@ -21,7 +23,7 @@ formats, the library will guess the number format.
 | XLS               |   ✔   | Number Format Code     |
 | XLML              |   ✔   | Number Format Code     |
 | SYLK              |   R   | Number Format Code     |
-| ODS / FODS / UOS  |   ✔   | XML                    |
+| ODS / FODS / UOS  |   ✔   | XML Tokens             |
 | NUMBERS           |       | Binary encoding        |
 | WK1               |   +   | Fixed set of formats   |
 | WK3 / WK4         |       | Binary encoding        |
@@ -32,7 +34,7 @@ formats, the library will guess the number format.
 | WB1 / WB2 / WB3   |       | Binary encoding        |
 | QPW               |   +   | Binary encoding        |
 | DBF               |       | Implied by field types |
-| HTML              |   *   | Special override       |
+| HTML              |   !   | Special override       |
 | CSV               |   *   | N/A                    |
 | PRN               |   *   | N/A                    |
 | DIF               |   *   | N/A                    |
@@ -40,7 +42,9 @@ formats, the library will guess the number format.
 
 (+) mark formats with limited support. The QPW (Quattro Pro Workbooks) parser
 supports the built-in date and built-in time formats but does not support
-custom number formats.
+custom number formats. [Date and Time support](/docs/csf/features/dates) in
+modern Excel formats requires limited number format support to distinguish date
+or time codes from standard numeric data.
 
 Asterisks (*) mark formats that mix content and presentation. Writers will use
 formatted values if cell objects include formatted text or number formats.
@@ -48,6 +52,9 @@ Parsers may guess number formats for special values.
 
 The letter R (R) marks features parsed but not written in the format.
 
+(!) HTML mixes content and presentation. The HTML DOM parser supports special
+[attributes to override number formats](/docs/api/utilities/html#value-override)
+
 </details>
 
 This example generates a worksheet with common number formats. `sheet_to_html`
@@ -111,6 +118,21 @@ Many spreadsheet formats store dates and times using a number that represents
 the number of seconds or days after some epoch. Dates are covered in more detail
 [in the dedicated section](/docs/csf/features/dates).
 
+### Percentages
+
+Percentage formats automatically scale values by 100. Multiple percent symbols
+repeat the effect. For example, a cell with value `2.19%` is typically stored as
+a numeric cell with value `0.0219` and number format `0.00%`
+
+The following table uses the `en-US` locale (`.` as the decimal point symbol):
+
+| Number   | Format   | `en-US` Text |
+|:---------|---------:|-------------:|
+| `0.0219` |  `0.00%` |      `2.19%` |
+| `2.19`   |  `0.00%` |       `219%` |
+| `0.0219` | `0.00%%` |      `219%%` |
+| `2.19`   | `0.00%%` |    `21900%%` |
+
 ## SheetJS Representation
 
 Number formats and values are attached to cells. The following keys are used: