From b3c637fc7fae887eccf2da1b37453d7679d1805f Mon Sep 17 00:00:00 2001
From: Dan Robertson <dan@dlrobertson.com>
Date: Mon, 14 Nov 2022 21:44:50 +0000
Subject: [PATCH] editorial: make Blob.slice a separate algorithm (#183)

SHA: 3ee8d2313cace7be8decd5b1b595eb51000b09ba
Reason: push, by mkruisselbrink

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 412 +++++++++++++++++++++++++++--------------------------
 1 file changed, 210 insertions(+), 202 deletions(-)

diff --git a/index.html b/index.html
index 9788dbc..e63b76c 100644
--- a/index.html
+++ b/index.html
@@ -4,9 +4,9 @@
   <meta content="width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport">
   <title>File API</title>
   <meta content="ED" name="w3c-status">
-  <meta content="Bikeshed version b0de3432c, updated Thu Oct 13 09:16:59 2022 -0700" name="generator">
+  <meta content="Bikeshed version 63e66730b, updated Tue Oct 25 12:35:05 2022 -0700" name="generator">
   <link href="https://www.w3.org/TR/FileAPI/" rel="canonical">
-  <meta content="57c12ca90689958a1d66ab62148c9911fe37b3bb" name="document-revision">
+  <meta content="3ee8d2313cace7be8decd5b1b595eb51000b09ba" name="document-revision">
 <style>/* style-autolinks */
 
 .css.css, .property.property, .descriptor.descriptor {
@@ -407,6 +407,14 @@
 .heading > a.self-link {
     font-size: 83%;
 }
+.example > a.self-link,
+.note > a.self-link,
+.issue > a.self-link {
+    /* These blocks are overflow:auto, so positioning outside
+       doesn't work. */
+    left: auto;
+    right: 0;
+}
 li > a.self-link {
     left: calc(-1 * (3.5rem - 26px) - 2em);
 }
@@ -511,7 +519,7 @@
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2021/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">File API</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2022-10-20">20 October 2022</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2022-11-14">14 November 2022</time></p>
    <details open>
     <summary>More details about this document</summary>
     <div data-fill-with="spec-metadata">
@@ -809,6 +817,62 @@ <h2 class="heading settled" data-level="2" id="terminology"><span class="secno">
    <p>The term <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="UnixEpoch">Unix Epoch</dfn> is used in this specification to refer to the time 00:00:00 UTC on January 1 1970
 (or 1970-01-01T00:00:00Z ISO 8601);
 this is the same time that is conceptually "<code>0</code>" in ECMA-262 <a data-link-type="biblio" href="#biblio-ecma-262">[ECMA-262]</a>.</p>
+   <div class="algorithm" data-algorithm="slice blob">
+     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-export id="slice-blob">slice blob</dfn> algorithm given a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑧">Blob</a></code> <var>blob</var>,
+an optional parameter <var>start</var>, an optional parameter <var>end</var>,
+and an optional parameter <var>contentType</var> is used to refer to the following
+steps and returns a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑨">Blob</a></code> containing the bytes ranging from the <var>start</var> parameter
+up to but not including the <var>end</var> parameter. It must act as follows: 
+    <ol>
+     <li data-md>
+      <p>Let <var>originalSize</var> be <var>blob</var>’s <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size">size</a></code>.</p>
+     <li data-md>
+      <p>The optional <var>start</var> parameter is a value for the start point of a <a data-link-type="dfn" href="#slice-blob" id="ref-for-slice-blob">slice blob</a> call, and must be treated as a byte-order position, with the zeroth position representing the
+ first byte. User agents must normalize <var>start</var> according to the following:</p>
+      <ol type="a">
+       <li>If the optional <var>start</var> parameter is not used as a parameter when making this call,
+ let <var>relativeStart</var> be 0. 
+       <li>If <var>start</var> is negative, let <var>relativeStart</var> be <code>max((<var>originalSize</var> + <var>start</var>), 0)</code>. 
+       <li>Otherwise, let <var>relativeStart</var> be <code>min(<var>start</var>, <var>originalSize</var>)</code>. 
+      </ol>
+     <li data-md>
+      <p>The optional <var>end</var> parameter is a value for the end point of a <a data-link-type="dfn" href="#slice-blob" id="ref-for-slice-blob①">slice blob</a> call.
+ User agents must normalize <var>end</var> according to the following:</p>
+      <ol type="a">
+       <li>If the optional <var>end</var> parameter is not used as a parameter when making this call,
+  let <var>relativeEnd</var> be <var>originalSize</var>. 
+       <li>If <var>end</var> is negative, let <var>relativeEnd</var> be <code>max((<var>originalSize</var> + <var>end</var>), 0)</code>. 
+       <li>Else, let <var>relativeEnd</var> be <code>min(<var>end</var>, <var>originalSize</var>)</code>. 
+      </ol>
+     <li data-md>
+      <p>The optional <var>contentType</var> parameter is used to set the ASCII-encoded string in lower
+ case representing the media type of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⓪">Blob</a></code>. User agents must normalize <var>contentType</var> according to the following:</p>
+      <ol type="a">
+       <li>If the <var>contentType</var> parameter is not provided, let <var>relativeContentType</var> be set to the empty string. 
+       <li>
+        Otherwise, let <var>relativeContentType</var> be set to <var>contentType</var> and run the
+  substeps below: 
+        <ol>
+         <li data-md>
+          <p>If <var>relativeContentType</var> contains any characters outside the range of U+0020 to
+U+007E, then set <var>relativeContentType</var> to the empty string and return from these
+substeps.</p>
+         <li data-md>
+          <p>Convert every character in <var>relativeContentType</var> to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-lowercase" id="ref-for-ascii-lowercase">ASCII lowercase</a>.</p>
+        </ol>
+      </ol>
+     <li data-md>
+      <p>Let <var>span</var> be <code>max((<var>relativeEnd</var> - <var>relativeStart</var>), 0)</code>.</p>
+     <li data-md>
+      <p>Return a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①①">Blob</a></code> object <var>S</var> with the following characteristics:</p>
+      <ol type="a">
+       <li><var>S</var> refers to <var>span</var> consecutive <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte">byte</a>s from <var>blob</var>’s
+  associated <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①">byte</a> sequence, beginning with the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte②">byte</a> at byte-order position <var>relativeStart</var>. 
+       <li><var>S</var>.<code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size①">size</a></code> = <var>span</var>. 
+       <li><var>S</var>.<code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type">type</a></code> = <var>relativeContentType</var>. 
+      </ol>
+    </ol>
+   </div>
    <h2 class="heading settled" data-level="3" id="blob-section"><span class="secno">3. </span><span class="content">The Blob Interface and Binary Data</span><a class="self-link" href="#blob-section"></a></h2>
    <div class="mdn-anno wrapped after">
     <button class="mdn-anno-btn"><b class="all-engines-flag" title="This feature is in all current engines.">✔</b><span>MDN</span></button>
@@ -824,15 +888,15 @@ <h2 class="heading settled" data-level="3" id="blob-section"><span class="secno"
       <hr>
       <span class="firefox_android no"><span>Firefox for Android</span><span>?</span></span><span class="safari_ios no"><span>iOS Safari</span><span>?</span></span><span class="chrome_android no"><span>Chrome for Android</span><span>?</span></span><span class="webview_android no"><span>Android WebView</span><span>?</span></span><span class="samsunginternet_android no"><span>Samsung Internet</span><span>?</span></span><span class="opera_android yes"><span>Opera Mobile</span><span>11+</span></span>
       <hr>
-      <span class="nodejs no"><span>Node.js</span><span>None</span></span>
+      <span class="nodejs yes"><span>Node.js</span><span>18.0.0+</span></span>
      </div>
     </div>
    </div>
-   <p>A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑧">Blob</a></code> object refers to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte">byte</a> sequence,
-and has a <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size">size</a></code> attribute which is the total number of bytes in the byte sequence,
-and a <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type">type</a></code> attribute,
-which is an ASCII-encoded string in lower case representing the media type of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①">byte</a> sequence.</p>
-   <p>Each <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑨">Blob</a></code> must have an internal <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-noexport id="snapshot-state">snapshot state</dfn>,
+   <p>A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①②">Blob</a></code> object refers to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte③">byte</a> sequence,
+and has a <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size②">size</a></code> attribute which is the total number of bytes in the byte sequence,
+and a <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type①">type</a></code> attribute,
+which is an ASCII-encoded string in lower case representing the media type of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte④">byte</a> sequence.</p>
+   <p>Each <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①③">Blob</a></code> must have an internal <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-noexport id="snapshot-state">snapshot state</dfn>,
 which must be initially set to the state of the underlying storage,
 if any such underlying storage exists.
 Further normative definition of <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state">snapshot state</a> can be found for <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑥">File</a></code>s.</p>
@@ -841,13 +905,13 @@ <h2 class="heading settled" data-level="3" id="blob-section"><span class="secno"
   <dfn class="dfn-paneled idl-code" data-dfn-for="Blob" data-dfn-type="constructor" data-export data-lt="Blob(blobParts, options)|constructor(blobParts, options)|Blob(blobParts)|constructor(blobParts)|Blob()|constructor()" id="dom-blob-blob"><code><c- g>constructor</c-></code></dfn>(<c- b>optional</c-> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#typedefdef-blobpart" id="ref-for-typedefdef-blobpart"><c- n>BlobPart</c-></a>> <a class="idl-code" data-link-type="argument" href="#dfn-blobParts" id="ref-for-dfn-blobParts"><c- g>blobParts</c-></a>,
               <c- b>optional</c-> <a data-link-type="idl-name" href="#dfn-BlobPropertyBag" id="ref-for-dfn-BlobPropertyBag"><c- n>BlobPropertyBag</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="Blob/Blob(blobParts, options), Blob/constructor(blobParts, options), Blob/Blob(blobParts), Blob/constructor(blobParts), Blob/Blob(), Blob/constructor()" data-dfn-type="argument" data-export id="dom-blob-blob-blobparts-options-options"><code><c- g>options</c-></code></dfn> = {});
 
-  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="unsigned long long" href="#dfn-size" id="ref-for-dfn-size①"><c- g>size</c-></a>;
-  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="DOMString" href="#dfn-type" id="ref-for-dfn-type①"><c- g>type</c-></a>;
+  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="unsigned long long" href="#dfn-size" id="ref-for-dfn-size③"><c- g>size</c-></a>;
+  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="DOMString" href="#dfn-type" id="ref-for-dfn-type②"><c- g>type</c-></a>;
 
   // slice Blob into byte-ranged chunks
-  <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob①⓪"><c- n>Blob</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-slice" id="ref-for-dfn-slice"><c- g>slice</c-></a>(<c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp" id="ref-for-Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long" id="ref-for-idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-start" id="ref-for-dfn-start"><c- g>start</c-></a>,
-            <c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp" id="ref-for-Clamp①"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long" id="ref-for-idl-long-long①"><c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-end" id="ref-for-dfn-end"><c- g>end</c-></a>,
-            <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-contentTypeBlob" id="ref-for-dfn-contentTypeBlob"><c- g>contentType</c-></a>);
+  <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob①④"><c- n>Blob</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-slice" id="ref-for-dfn-slice"><c- g>slice</c-></a>(<c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp" id="ref-for-Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long" id="ref-for-idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Blob/slice(start, end, contentType), Blob/slice(start, end), Blob/slice(start), Blob/slice()" data-dfn-type="argument" data-export id="dom-blob-slice-start-end-contenttype-start"><code><c- g>start</c-></code><a class="self-link" href="#dom-blob-slice-start-end-contenttype-start"></a></dfn>,
+            <c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp" id="ref-for-Clamp①"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long" id="ref-for-idl-long-long①"><c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Blob/slice(start, end, contentType), Blob/slice(start, end), Blob/slice(start), Blob/slice()" data-dfn-type="argument" data-export id="dom-blob-slice-start-end-contenttype-end"><code><c- g>end</c-></code><a class="self-link" href="#dom-blob-slice-start-end-contenttype-end"></a></dfn>,
+            <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="Blob/slice(start, end, contentType), Blob/slice(start, end), Blob/slice(start), Blob/slice()" data-dfn-type="argument" data-export id="dom-blob-slice-start-end-contenttype-contenttype"><code><c- g>contentType</c-></code><a class="self-link" href="#dom-blob-slice-start-end-contenttype-contenttype"></a></dfn>);
 
   // read from the Blob.
   [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#NewObject" id="ref-for-NewObject"><c- g>NewObject</c-></a>] <a data-link-type="idl-name" href="https://streams.spec.whatwg.org/#readablestream" id="ref-for-readablestream"><c- n>ReadableStream</c-></a> <a class="idl-code" data-link-type="method" href="#dom-blob-stream" id="ref-for-dom-blob-stream"><c- g>stream</c-></a>();
@@ -862,9 +926,9 @@ <h2 class="heading settled" data-level="3" id="blob-section"><span class="secno"
   <a data-link-type="idl-name" href="#enumdef-endingtype" id="ref-for-enumdef-endingtype"><c- n>EndingType</c-></a> <a class="idl-code" data-default="&quot;transparent&quot;" data-link-type="dict-member" data-type="EndingType " href="#dom-blobpropertybag-endings" id="ref-for-dom-blobpropertybag-endings"><c- g>endings</c-></a> = "transparent";
 };
 
-<c- b>typedef</c-> (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob①①"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-blobpart"><code><c- g>BlobPart</c-></code></dfn>;
+<c- b>typedef</c-> (<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource"><c- n>BufferSource</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob①⑤"><c- n>Blob</c-></a> <c- b>or</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-blobpart"><code><c- g>BlobPart</c-></code></dfn>;
 </pre>
-   <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①②">Blob</a></code> objects are <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects" id="ref-for-serializable-objects">serializable objects</a>. Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps" id="ref-for-serialization-steps">serialization steps</a>,
+   <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑥">Blob</a></code> objects are <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable-objects" id="ref-for-serializable-objects">serializable objects</a>. Their <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps" id="ref-for-serialization-steps">serialization steps</a>,
 given <var>value</var> and <var>serialized</var>, are:</p>
    <ol>
     <li data-md>
@@ -880,7 +944,7 @@ <h2 class="heading settled" data-level="3" id="blob-section"><span class="secno"
      <p>Set <var>value</var>’s underlying byte sequence to <var>serialized</var>.[[ByteSequence]].</p>
    </ol>
    <div class="algorithm" data-algorithm="get stream">
-     A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①③">Blob</a></code> <var>blob</var> has an associated <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-export id="blob-get-stream">get stream</dfn> algorithm,
+     A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑦">Blob</a></code> <var>blob</var> has an associated <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-export id="blob-get-stream">get stream</dfn> algorithm,
 which runs these steps: 
     <ol>
      <li data-md>
@@ -942,9 +1006,9 @@ <h3 class="heading settled" data-level="3.1" id="constructorBlob"><span class="s
     <ol>
      <li data-md>
       <p>If invoked with zero parameters,
-return a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①④">Blob</a></code> object consisting of 0 bytes,
-with <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size②">size</a></code> set to 0,
-and with <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type②">type</a></code> set to the empty string.</p>
+return a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑧">Blob</a></code> object consisting of 0 bytes,
+with <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size④">size</a></code> set to 0,
+and with <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type③">type</a></code> set to the empty string.</p>
      <li data-md>
       <p>Let <var>bytes</var> be the result of <a data-link-type="dfn" href="#process-blob-parts" id="ref-for-process-blob-parts">processing blob parts</a> given <code class="idl"><a data-link-type="idl" href="#dfn-blobParts" id="ref-for-dfn-blobParts①">blobParts</a></code> and <code class="idl"><a data-link-type="idl" href="#dom-blob-blob-blobparts-options-options" id="ref-for-dom-blob-blob-blobparts-options-options">options</a></code>.</p>
      <li data-md>
@@ -956,12 +1020,12 @@ <h3 class="heading settled" data-level="3.1" id="constructorBlob"><span class="s
 If <var>t</var> contains any characters outside the range U+0020 to U+007E,
 then set <var>t</var> to the empty string and return from these substeps.</p>
        <li data-md>
-        <p>Convert every character in <var>t</var> to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-lowercase" id="ref-for-ascii-lowercase">ASCII lowercase</a>.</p>
+        <p>Convert every character in <var>t</var> to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-lowercase" id="ref-for-ascii-lowercase①">ASCII lowercase</a>.</p>
       </ol>
      <li data-md>
-      <p>Return a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑤">Blob</a></code> object referring to <var>bytes</var> as its associated <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte②">byte</a> sequence,
-with its <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size③">size</a></code> set to the length of <var>bytes</var>,
-and its <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type③">type</a></code> set to the value of <var>t</var> from the substeps above.</p>
+      <p>Return a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑨">Blob</a></code> object referring to <var>bytes</var> as its associated <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑤">byte</a> sequence,
+with its <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size⑤">size</a></code> set to the length of <var>bytes</var>,
+and its <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type④">type</a></code> set to the value of <var>t</var> from the substeps above.</p>
     </ol>
    </div>
    <h4 class="heading settled" data-level="3.1.1" id="constructorParams"><span class="secno">3.1.1. </span><span class="content">Constructor Parameters</span><a class="self-link" href="#constructorParams"></a></h4>
@@ -974,7 +1038,7 @@ <h4 class="heading settled" data-level="3.1.1" id="constructorParams"><span clas
       <li data-md>
        <p><code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource①">BufferSource</a></code> elements.</p>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑥">Blob</a></code> elements.</p>
+       <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⓪">Blob</a></code> elements.</p>
       <li data-md>
        <p><code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString②">USVString</a></code> elements.</p>
      </ul>
@@ -984,7 +1048,7 @@ <h4 class="heading settled" data-level="3.1.1" id="constructorParams"><span clas
      <ul>
       <li data-md>
        <p><dfn class="dfn-paneled idl-code" data-dfn-for="BlobPropertyBag" data-dfn-type="dict-member" data-export id="dfn-BPtype"><code>type</code></dfn>,
-the ASCII-encoded string in lower case representing the media type of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑦">Blob</a></code>.
+the ASCII-encoded string in lower case representing the media type of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②①">Blob</a></code>.
 Normative conditions for this member are provided in the <a href="#constructorBlob">§ 3.1 Constructors</a>.</p>
       <li data-md>
        <p><dfn class="dfn-paneled idl-code" data-dfn-for="BlobPropertyBag" data-dfn-type="dict-member" data-export id="dom-blobpropertybag-endings"><code>endings</code></dfn>,
@@ -1013,16 +1077,16 @@ <h4 class="heading settled" data-level="3.1.1" id="constructorParams"><span clas
           <p>Append the result of <a data-link-type="dfn" href="https://encoding.spec.whatwg.org/#utf-8-encode" id="ref-for-utf-8-encode">UTF-8 encoding</a> <var>s</var> to <var>bytes</var>.</p>
           <p class="note" role="note"><span>Note:</span> The algorithm from WebIDL <a data-link-type="biblio" href="#biblio-webidl">[WebIDL]</a> replaces unmatched surrogates in an invalid utf-16 string
 with U+FFFD replacement characters.
-Scenarios exist when the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑧">Blob</a></code> constructor may result in some data loss
+Scenarios exist when the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②②">Blob</a></code> constructor may result in some data loss
 due to lost or scrambled character sequences.</p>
         </ol>
        <li data-md>
         <p>If <var>element</var> is a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource②">BufferSource</a></code>, <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-get-buffer-source-copy" id="ref-for-dfn-get-buffer-source-copy">get
 a copy of the bytes held by the buffer source</a>, and append those bytes to <var>bytes</var>.</p>
        <li data-md>
-        <p>If <var>element</var> is a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob①⑨">Blob</a></code>,
+        <p>If <var>element</var> is a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②③">Blob</a></code>,
 append the bytes it represents to <var>bytes</var>.</p>
-        <p class="note" role="note"><span>Note:</span> The <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type④">type</a></code> of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⓪">Blob</a></code> array element is ignored and will not affect <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑤">type</a></code> of returned <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②①">Blob</a></code> object.</p>
+        <p class="note" role="note"><span>Note:</span> The <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑤">type</a></code> of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②④">Blob</a></code> array element is ignored and will not affect <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑥">type</a></code> of returned <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑤">Blob</a></code> object.</p>
       </ol>
      <li data-md>
       <p>Return <var>bytes</var>.</p>
@@ -1123,9 +1187,9 @@ <h3 class="heading settled" data-level="3.2" id="attributes-blob"><span class="s
       </div>
      </div>
      <dfn class="dfn-paneled idl-code" data-dfn-for="Blob" data-dfn-type="attribute" data-export id="dfn-size"><code>size</code></dfn>, <span> of type <a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①">unsigned long long</a>, readonly</span>
-    <dd>Returns the size of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte③">byte</a> sequence in number of bytes.
+    <dd>Returns the size of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑥">byte</a> sequence in number of bytes.
     On getting, conforming user agents must return the total number of bytes that can be read by a <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader②">FileReader</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-FileReaderSync" id="ref-for-dfn-FileReaderSync">FileReaderSync</a></code> object,
-    or 0 if the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②②">Blob</a></code> has no bytes to be read. 
+    or 0 if the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑥">Blob</a></code> has no bytes to be read. 
     <dt>
      <div class="mdn-anno wrapped">
       <button class="mdn-anno-btn"><b class="all-engines-flag" title="This feature is in all current engines.">✔</b><span>MDN</span></button>
@@ -1148,7 +1212,7 @@ <h3 class="heading settled" data-level="3.2" id="attributes-blob"><span class="s
        <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/File/type" title="Returns the media type (MIME) of the file represented by a File object.">File/type</a></p>
        <p class="all-engines-text">In all current engines.</p>
        <div class="support">
-        <span class="firefox yes"><span>Firefox</span><span>3.6+</span></span><span class="safari yes"><span>Safari</span><span>7+</span></span><span class="chrome yes"><span>Chrome</span><span>13+</span></span>
+        <span class="firefox yes"><span>Firefox</span><span>3.6+</span></span><span class="safari yes"><span>Safari</span><span>8+</span></span><span class="chrome yes"><span>Chrome</span><span>13+</span></span>
         <hr>
         <span class="opera yes"><span>Opera</span><span>15+</span></span><span class="edge_blink yes"><span>Edge</span><span>79+</span></span>
         <hr>
@@ -1160,22 +1224,22 @@ <h3 class="heading settled" data-level="3.2" id="attributes-blob"><span class="s
      </div>
      <dfn class="dfn-paneled idl-code" data-dfn-for="Blob" data-dfn-type="attribute" data-export id="dfn-type"><code>type</code></dfn>, <span> of type <a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString③">DOMString</a>, readonly</span>
     <dd>
-     The ASCII-encoded string in lower case representing the media type of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②③">Blob</a></code>.
-    On getting, user agents must return the type of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②④">Blob</a></code> as an ASCII-encoded string in lower case,
-    such that when it is converted to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte④">byte</a> sequence,
+     The ASCII-encoded string in lower case representing the media type of the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑦">Blob</a></code>.
+    On getting, user agents must return the type of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑧">Blob</a></code> as an ASCII-encoded string in lower case,
+    such that when it is converted to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑦">byte</a> sequence,
     it is a <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parsable-mime-type" id="ref-for-parsable-mime-type">parsable MIME type</a>,
     or the empty string – 0 bytes – if the type cannot be determined. 
-     <p>The <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑥">type</a></code> attribute can be set by the web application itself through constructor invocation
+     <p>The <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑦">type</a></code> attribute can be set by the web application itself through constructor invocation
     and through the <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice①">slice()</a></code> call;
     in these cases, further normative conditions for this attribute are in <a href="#constructorBlob">§ 3.1 Constructors</a>, <a href="#file-constructor">§ 4.1 Constructor</a>,
     and <a href="#slice-method-algo">§ 3.3.1 The slice() method</a> respectively.
-    User agents can also determine the <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑦">type</a></code> of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑤">Blob</a></code>,
-    especially if the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑤">byte</a> sequence is from an on-disk file;
+    User agents can also determine the <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑧">type</a></code> of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑨">Blob</a></code>,
+    especially if the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑧">byte</a> sequence is from an on-disk file;
     in this case, further normative conditions are in the <a data-link-type="dfn" href="#file-type-guidelines" id="ref-for-file-type-guidelines">file type guidelines</a>.</p>
-     <p class="note" role="note"><span>Note:</span> The type <var>t</var> of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑥">Blob</a></code> is considered a <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parsable-mime-type" id="ref-for-parsable-mime-type①">parsable MIME type</a>,
+     <p class="note" role="note"><span>Note:</span> The type <var>t</var> of a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⓪">Blob</a></code> is considered a <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parsable-mime-type" id="ref-for-parsable-mime-type①">parsable MIME type</a>,
     if performing the <a data-link-type="dfn" href="https://mimesniff.spec.whatwg.org/#parse-a-mime-type" id="ref-for-parse-a-mime-type">parse a MIME type</a> algorithm to a byte sequence converted from
     the ASCII-encoded string representing the Blob object’s type does not return failure.</p>
-     <p class="note" role="note"><span>Note:</span> Use of the <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑧">type</a></code> attribute informs the <a data-link-type="dfn" href="#blob-package-data" id="ref-for-blob-package-data">package data</a> algorithm
+     <p class="note" role="note"><span>Note:</span> Use of the <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑨">type</a></code> attribute informs the <a data-link-type="dfn" href="#blob-package-data" id="ref-for-blob-package-data">package data</a> algorithm
     and determines the <code>Content-Type</code> header when <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-fetch" id="ref-for-concept-fetch">fetching</a> <a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url">blob URLs</a>.</p>
    </dl>
    <h3 class="heading settled" data-level="3.3" id="methodsandparams-blob"><span class="secno">3.3. </span><span class="content">Methods and Parameters</span><a class="self-link" href="#methodsandparams-blob"></a></h3>
@@ -1199,61 +1263,16 @@ <h4 class="heading settled" data-level="3.3.1" id="slice-method-algo"><span clas
     </div>
    </div>
    <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="Blob" data-dfn-type="method" data-export data-lt="slice(start, end, contentType)|slice(start, end)|slice(start)|slice()|slice(start, end, contentType), slice(start, end), slice(start), slice()" id="dfn-slice"><code>slice()</code></dfn> method
-returns a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑦">Blob</a></code> object with bytes ranging from
-the optional <code class="idl"><a data-link-type="idl" href="#dfn-start" id="ref-for-dfn-start①">start</a></code> parameter
-up to but not including the optional <code class="idl"><a data-link-type="idl" href="#dfn-end" id="ref-for-dfn-end①">end</a></code> parameter,
-and with a <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type⑨">type</a></code> attribute that is the value of the optional <code class="idl"><a class="idl-code" data-link-type="argument" href="#dfn-contentTypeBlob" id="ref-for-dfn-contentTypeBlob①">contentType</a></code> parameter.
-It must act as follows:</p>
+returns a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③①">Blob</a></code> object with bytes ranging from the optional <var>start</var> parameter
+up to but not including the optional <var>end</var> parameter, and with a <code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type①⓪">type</a></code> attribute
+that is the value of the optional <var>contentType</var> parameter. It must act as follows:</p>
    <ol>
     <li data-md>
-     <p>The optional <dfn class="dfn-paneled idl-code" data-dfn-for="Blob/slice(start, end, contentType)" data-dfn-type="argument" data-export id="dfn-start"><code>start</code></dfn> parameter
-is a value for the start point of a <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice③">slice()</a></code> call,
-and must be treated as a byte-order position,
-with the zeroth position representing the first byte.
-User agents must process <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice④">slice()</a></code> with <code class="idl"><a data-link-type="idl" href="#dfn-start" id="ref-for-dfn-start②">start</a></code> normalized according to the following:</p>
-     <ol type="a">
-      <li>If the optional <code class="idl"><a data-link-type="idl" href="#dfn-start" id="ref-for-dfn-start③">start</a></code> parameter is not used as a parameter when making this call, let <var>relativeStart</var> be 0. 
-      <li>If <code class="idl"><a data-link-type="idl" href="#dfn-start" id="ref-for-dfn-start④">start</a></code> is negative, let <var>relativeStart</var> be <code>max((<code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size④">size</a></code> + <code class="idl"><a data-link-type="idl" href="#dfn-start" id="ref-for-dfn-start⑤">start</a></code>), 0)</code>. 
-      <li>Else, let <var>relativeStart</var> be <code>min(start, size)</code>. 
-     </ol>
-    <li data-md>
-     <p>The optional <dfn class="dfn-paneled idl-code" data-dfn-for="Blob/slice(start, end, contentType)" data-dfn-type="argument" data-export id="dfn-end"><code>end</code></dfn> parameter
-is a value for the end point of a <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice⑤">slice()</a></code> call.
-User agents must process <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice⑥">slice()</a></code> with <code class="idl"><a data-link-type="idl" href="#dfn-end" id="ref-for-dfn-end②">end</a></code> normalized according to the following:</p>
-     <ol type="a">
-      <li>If the optional <code class="idl"><a data-link-type="idl" href="#dfn-end" id="ref-for-dfn-end③">end</a></code> parameter is not used as a parameter when making this call, let <var>relativeEnd</var> be <code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size⑤">size</a></code>. 
-      <li>If <code class="idl"><a data-link-type="idl" href="#dfn-end" id="ref-for-dfn-end④">end</a></code> is negative, let <var>relativeEnd</var> be <code>max((size + end), 0)</code>. 
-      <li>Else, let <var>relativeEnd</var> be <code>min(end, size)</code>. 
-     </ol>
-    <li data-md>
-     <p>The optional <dfn class="dfn-paneled idl-code" data-dfn-for="Blob/slice(start, end, contentType)" data-dfn-type="argument" data-export id="dfn-contentTypeBlob"><code>contentType</code></dfn> parameter
-is used to set the ASCII-encoded string in lower case representing the media type of the Blob.
-User agents must process the <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice⑦">slice()</a></code> with <code class="idl"><a data-link-type="idl" href="#dfn-contentTypeBlob" id="ref-for-dfn-contentTypeBlob②">contentType</a></code> normalized according to the following:</p>
-     <ol type="a">
-      <li>If the <code class="idl"><a data-link-type="idl" href="#dfn-contentTypeBlob" id="ref-for-dfn-contentTypeBlob③">contentType</a></code> parameter is not provided, let <var>relativeContentType</var> be set to the empty string. 
-      <li>
-       Else let <var>relativeContentType</var> be set to <code class="idl"><a data-link-type="idl" href="#dfn-contentTypeBlob" id="ref-for-dfn-contentTypeBlob④">contentType</a></code> and run the substeps below: 
-       <ol>
-        <li data-md>
-         <p>If <var>relativeContentType</var> contains any characters outside the range of U+0020 to U+007E,
-then set <var>relativeContentType</var> to the empty string and return from these substeps.</p>
-        <li data-md>
-         <p>Convert every character in <var>relativeContentType</var> to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-lowercase" id="ref-for-ascii-lowercase①">ASCII lowercase</a>.</p>
-       </ol>
-     </ol>
-    <li data-md>
-     <p>Let <var>span</var> be <code>max((relativeEnd - relativeStart), 0)</code>.</p>
-    <li data-md>
-     <p>Return a new <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑧">Blob</a></code> object <var>S</var> with the following characteristics:</p>
-     <ol type="a">
-      <li><var>S</var> refers to <var>span</var> consecutive <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑥">byte</a>s from <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>,
-    beginning with the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑦">byte</a> at byte-order position <var>relativeStart</var>. 
-      <li><var>S</var>.<code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size⑥">size</a></code> = <var>span</var>. 
-      <li><var>S</var>.<code class="idl"><a data-link-type="idl" href="#dfn-type" id="ref-for-dfn-type①⓪">type</a></code> = <var>relativeContentType</var>. 
-     </ol>
+     <p>Return the result of <a data-link-type="dfn" href="#slice-blob" id="ref-for-slice-blob②">slice blob</a> given <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>, <var>start</var>, <var>end</var>,
+ and <var>contentType</var>.</p>
    </ol>
    <div class="example" id="example-0ffe45c5">
-    <a class="self-link" href="#example-0ffe45c5"></a> The examples below illustrate the different types of <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice⑧">slice()</a></code> calls possible. Since the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑦">File</a></code> interface inherits from the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob②⑨">Blob</a></code> interface, examples are based on the use of the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑧">File</a></code> interface. 
+    <a class="self-link" href="#example-0ffe45c5"></a> The examples below illustrate the different types of <code class="idl"><a data-link-type="idl" href="#dfn-slice" id="ref-for-dfn-slice③">slice()</a></code> calls possible. Since the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑦">File</a></code> interface inherits from the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③②">Blob</a></code> interface, examples are based on the use of the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑧">File</a></code> interface. 
 <pre class="lang-javascript highlight"><c- c1>// obtain input element through DOM</c->
 
 <c- a>var</c-> file <c- o>=</c-> document<c- p>.</c->getElementById<c- p>(</c-><c- t>'file'</c-><c- p>).</c->files<c- p>[</c-><c- mf>0</c-><c- p>];</c->
@@ -1386,10 +1405,10 @@ <h2 class="heading settled" data-level="4" id="file-section"><span class="secno"
      </div>
     </div>
    </div>
-   <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑨">File</a></code> object is a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⓪">Blob</a></code> object with a <code class="idl"><a data-link-type="idl" href="#dfn-name" id="ref-for-dfn-name">name</a></code> attribute, which is a string;
+   <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file⑨">File</a></code> object is a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③③">Blob</a></code> object with a <code class="idl"><a data-link-type="idl" href="#dfn-name" id="ref-for-dfn-name">name</a></code> attribute, which is a string;
 it can be created within the web application via a constructor,
-or is a reference to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑧">byte</a> sequence from a file from the underlying (OS) file system.</p>
-   <p>If a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①⓪">File</a></code> object is a reference to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑨">byte</a> sequence originating from a file on disk,
+or is a reference to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte⑨">byte</a> sequence from a file from the underlying (OS) file system.</p>
+   <p>If a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①⓪">File</a></code> object is a reference to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①⓪">byte</a> sequence originating from a file on disk,
 then its <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state③">snapshot state</a> should be set to the state of the file on disk at the time the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①①">File</a></code> object is created.</p>
    <p class="note" role="note"><span>Note:</span> This is a non-trivial requirement to implement for user agents,
 and is thus not a <em>must</em> but a <em>should</em> <a data-link-type="biblio" href="#biblio-rfc2119">[RFC2119]</a>.
@@ -1414,7 +1433,7 @@ <h2 class="heading settled" data-level="4" id="file-section"><span class="secno"
 including statistical methods.</p>
    </ul>
 <pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed①"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>Worker</c->), <a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/structured-data.html#serializable" id="ref-for-serializable①"><c- g>Serializable</c-></a>]
-<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="dfn-file"><code><c- g>File</c-></code></dfn> : <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③①"><c- n>Blob</c-></a> {
+<c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="dfn-file"><code><c- g>File</c-></code></dfn> : <a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③④"><c- n>Blob</c-></a> {
   <dfn class="dfn-paneled idl-code" data-dfn-for="File" data-dfn-type="constructor" data-export data-lt="File(fileBits, fileName, options)|constructor(fileBits, fileName, options)|File(fileBits, fileName)|constructor(fileBits, fileName)" id="dom-file-file"><code><c- g>constructor</c-></code></dfn>(<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence①"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#typedefdef-blobpart" id="ref-for-typedefdef-blobpart②"><c- n>BlobPart</c-></a>> <a class="idl-code" data-link-type="argument" href="#dfn-fileBits" id="ref-for-dfn-fileBits"><c- g>fileBits</c-></a>,
               <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑤"><c- b>USVString</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-fileName" id="ref-for-dfn-fileName"><c- g>fileName</c-></a>,
               <c- b>optional</c-> <a data-link-type="idl-name" href="#dfn-FilePropertyBag" id="ref-for-dfn-FilePropertyBag"><c- n>FilePropertyBag</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="File/File(fileBits, fileName, options), File/constructor(fileBits, fileName, options), File/File(fileBits, fileName), File/constructor(fileBits, fileName)" data-dfn-type="argument" data-export id="dom-file-file-filebits-filename-options-options"><code><c- g>options</c-></code></dfn> = {});
@@ -1477,7 +1496,7 @@ <h3 class="heading settled" data-level="4.1" id="file-constructor"><span class="
      <li data-md>
       <p>Let <var>n</var> be the <code class="idl"><a data-link-type="idl" href="#dfn-fileName" id="ref-for-dfn-fileName①">fileName</a></code> argument to the constructor.</p>
       <p class="note" role="note"><span>Note:</span> Underlying OS filesystems use differing conventions for file name;
-with constructed files, mandating UTF-16 lessens ambiquity when file names are converted to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①⓪">byte</a> sequences.</p>
+with constructed files, mandating UTF-16 lessens ambiquity when file names are converted to <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①①">byte</a> sequences.</p>
      <li data-md>
       <p>Process <code class="idl"><a data-link-type="idl" href="#dfn-FilePropertyBag" id="ref-for-dfn-FilePropertyBag①">FilePropertyBag</a></code> dictionary argument by running the following substeps:</p>
       <ol>
@@ -1502,9 +1521,9 @@ <h3 class="heading settled" data-level="4.1" id="file-constructor"><span class="
       <p>Return a new <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①⑦">File</a></code> object <var>F</var> such that:</p>
       <ol start="2">
        <li data-md>
-        <p><var>F</var> refers to the <var>bytes</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①①">byte</a> sequence.</p>
+        <p><var>F</var> refers to the <var>bytes</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#byte" id="ref-for-byte①②">byte</a> sequence.</p>
        <li data-md>
-        <p><var>F</var>.<code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size⑦">size</a></code> is set to the number of total bytes in <var>bytes</var>.</p>
+        <p><var>F</var>.<code class="idl"><a data-link-type="idl" href="#dfn-size" id="ref-for-dfn-size⑥">size</a></code> is set to the number of total bytes in <var>bytes</var>.</p>
        <li data-md>
         <p><var>F</var>.<code class="idl"><a data-link-type="idl" href="#dfn-name" id="ref-for-dfn-name④">name</a></code> is set to <var>n</var>.</p>
        <li data-md>
@@ -1524,7 +1543,7 @@ <h4 class="heading settled" data-level="4.1.1" id="file-constructor-params"><spa
       <li data-md>
        <p><code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#BufferSource" id="ref-for-BufferSource③">BufferSource</a></code> elements.</p>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③②">Blob</a></code> elements, which includes <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①⑧">File</a></code> elements.</p>
+       <p><code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⑤">Blob</a></code> elements, which includes <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file①⑧">File</a></code> elements.</p>
       <li data-md>
        <p><code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-USVString" id="ref-for-idl-USVString⑥">USVString</a></code> elements.</p>
      </ul>
@@ -1550,7 +1569,7 @@ <h3 class="heading settled" data-level="4.2" id="file-attrs"><span class="secno"
        <p><a href="https://developer.mozilla.org/en-US/docs/Web/API/File/name" title="Returns the name of the file represented by a File object. For security reasons, the path is excluded from this property.">File/name</a></p>
        <p class="all-engines-text">In all current engines.</p>
        <div class="support">
-        <span class="firefox yes"><span>Firefox</span><span>3.6+</span></span><span class="safari yes"><span>Safari</span><span>7+</span></span><span class="chrome yes"><span>Chrome</span><span>13+</span></span>
+        <span class="firefox yes"><span>Firefox</span><span>3.6+</span></span><span class="safari yes"><span>Safari</span><span>8+</span></span><span class="chrome yes"><span>Chrome</span><span>13+</span></span>
         <hr>
         <span class="opera yes"><span>Opera</span><span>15+</span></span><span class="edge_blink yes"><span>Edge</span><span>79+</span></span>
         <hr>
@@ -1600,7 +1619,7 @@ <h3 class="heading settled" data-level="4.2" id="file-attrs"><span class="secno"
    </dl>
    <p>The <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file②①">File</a></code> interface is available on objects that expose an attribute of type <code class="idl"><a data-link-type="idl" href="#dfn-filelist" id="ref-for-dfn-filelist①">FileList</a></code>;
 these objects are defined in HTML <a data-link-type="biblio" href="#biblio-html">[HTML]</a>.
-The <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file②②">File</a></code> interface, which inherits from <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③③">Blob</a></code>, is immutable,
+The <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file②②">File</a></code> interface, which inherits from <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⑥">Blob</a></code>, is immutable,
 and thus represents file data that can be read into memory at the time a <a data-link-type="dfn" href="#readOperation" id="ref-for-readOperation">read operation</a> is initiated.
 User agents must process reads on files that no longer exist at the time of read as <a data-link-type="dfn" href="#file-error-read" id="ref-for-file-error-read">errors</a>,
 throwing a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror">NotFoundError</a></code> exception
@@ -1741,7 +1760,7 @@ <h2 class="heading settled" data-level="6" id="reading-data-section"><span class
    <h3 class="heading settled" data-level="6.1" id="blobreader-task-source"><span class="secno">6.1. </span><span class="content">The File Reading Task Source</span><a class="self-link" href="#blobreader-task-source"></a></h3>
    <p>This specification defines a new generic <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#task-source" id="ref-for-task-source">task source</a> called the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="fileReadingTaskSource">file reading task source</dfn>,
 which is used for all <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-task" id="ref-for-queue-a-task">tasks that are queued</a> in this specification
-to read byte sequences associated with <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③④">Blob</a></code> and <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⓪">File</a></code> objects.
+to read byte sequences associated with <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⑦">Blob</a></code> and <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⓪">File</a></code> objects.
 It is to be used for features that trigger in response to asynchronously reading binary data.</p>
    <h3 class="heading settled" data-level="6.2" id="APIASynch"><span class="secno">6.2. </span><span class="content">The <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader④">FileReader</a></code> API</span><a class="self-link" href="#APIASynch"></a></h3>
    <div class="mdn-anno wrapped after">
@@ -1764,10 +1783,10 @@ <h3 class="heading settled" data-level="6.2" id="APIASynch"><span class="secno">
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="dfn-filereader"><code><c- g>FileReader</c-></code></dfn>: <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#eventtarget" id="ref-for-eventtarget"><c- n>EventTarget</c-></a> {
   <a class="idl-code" data-link-type="constructor" href="#filereaderConstrctr" id="ref-for-filereaderConstrctr"><c- g>constructor</c-></a>();
   // async read methods
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsArrayBuffer" id="ref-for-dfn-readAsArrayBuffer"><c- g>readAsArrayBuffer</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑤"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsArrayBuffer(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasarraybuffer-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasarraybuffer-blob-blob"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined①"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsBinaryString" id="ref-for-dfn-readAsBinaryString"><c- g>readAsBinaryString</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑥"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsBinaryString(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasbinarystring-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasbinarystring-blob-blob"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined②"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsText" id="ref-for-dfn-readAsText①"><c- g>readAsText</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑦"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsText(blob, encoding), FileReader/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereader-readastext-blob-encoding-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readastext-blob-encoding-blob"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑥"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsText(blob, encoding), FileReader/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereader-readastext-blob-encoding-encoding"><code><c- g>encoding</c-></code><a class="self-link" href="#dom-filereader-readastext-blob-encoding-encoding"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined③"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsDataURL" id="ref-for-dfn-readAsDataURL"><c- g>readAsDataURL</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑧"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsDataURL(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasdataurl-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasdataurl-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsArrayBuffer" id="ref-for-dfn-readAsArrayBuffer"><c- g>readAsArrayBuffer</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑧"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsArrayBuffer(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasarraybuffer-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasarraybuffer-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined①"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsBinaryString" id="ref-for-dfn-readAsBinaryString"><c- g>readAsBinaryString</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob③⑨"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsBinaryString(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasbinarystring-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasbinarystring-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined②"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsText" id="ref-for-dfn-readAsText①"><c- g>readAsText</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⓪"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsText(blob, encoding), FileReader/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereader-readastext-blob-encoding-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readastext-blob-encoding-blob"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑥"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsText(blob, encoding), FileReader/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereader-readastext-blob-encoding-encoding"><code><c- g>encoding</c-></code><a class="self-link" href="#dom-filereader-readastext-blob-encoding-encoding"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined③"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsDataURL" id="ref-for-dfn-readAsDataURL"><c- g>readAsDataURL</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④①"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReader/readAsDataURL(blob)" data-dfn-type="argument" data-export id="dom-filereader-readasdataurl-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereader-readasdataurl-blob-blob"></a></dfn>);
 
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined④"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-abort" id="ref-for-dfn-abort①"><c- g>abort</c-></a>();
 
@@ -2116,15 +2135,15 @@ <h4 class="heading settled" data-level="6.2.2" id="blobreader-state"><span class
  until one of the <a data-link-type="dfn" href="#read-method" id="ref-for-read-method②">read methods</a> have been called on it.</p>
      <dt data-md><code class="idl"><a data-link-type="idl" href="#dom-filereader-loading" id="ref-for-dom-filereader-loading①">LOADING</a></code> (numeric value 1)
      <dd data-md>
-      <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③①">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob③⑨">Blob</a></code> is being read.
+      <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③①">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④②">Blob</a></code> is being read.
  One of the <a data-link-type="dfn" href="#read-method" id="ref-for-read-method③">read methods</a> is being processed,
  and no error has occurred during the read.</p>
      <dt data-md><code class="idl"><a data-link-type="idl" href="#dom-filereader-done" id="ref-for-dom-filereader-done①">DONE</a></code> (numeric value 2)
      <dd data-md>
-      <p>The entire <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③②">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④⓪">Blob</a></code> has been read into memory,
+      <p>The entire <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③②">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④③">Blob</a></code> has been read into memory,
  OR a <a data-link-type="dfn" href="#file-error-read" id="ref-for-file-error-read①">file read error</a> occurred,
  OR the read was aborted using <code class="idl"><a data-link-type="idl" href="#dfn-abort" id="ref-for-dfn-abort②">abort()</a></code>.
- The <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader①④">FileReader</a></code> is no longer reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③③">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④①">Blob</a></code>.
+ The <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader①④">FileReader</a></code> is no longer reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③③">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④④">Blob</a></code>.
  If <code class="idl"><a data-link-type="idl" href="#dom-filereader-readystate" id="ref-for-dom-filereader-readystate②">readyState</a></code> is set to <code class="idl"><a data-link-type="idl" href="#dom-filereader-done" id="ref-for-dom-filereader-done②">DONE</a></code> it means at least one of the <a data-link-type="dfn" href="#read-method" id="ref-for-read-method④">read methods</a> have been called on this <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader①⑤">FileReader</a></code>.</p>
     </dl>
    </div>
@@ -2250,7 +2269,7 @@ <h5 class="heading settled" data-level="6.2.3.5" id="abort"><span class="secno">
    </ol>
    <h3 class="heading settled" data-level="6.3" id="packaging-data"><span class="secno">6.3. </span><span class="content">Packaging data</span><a class="self-link" href="#packaging-data"></a></h3>
    <div class="algorithm" data-algorithm="package data">
-     A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④②">Blob</a></code> has an associated <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-noexport id="blob-package-data">package data</dfn> algorithm,
+     A <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④⑤">Blob</a></code> has an associated <dfn class="dfn-paneled" data-dfn-for="Blob" data-dfn-type="dfn" data-noexport id="blob-package-data">package data</dfn> algorithm,
 given <var>bytes</var>, a <var>type</var>, a optional <var>mimeType</var>, and a optional <var>encodingName</var>,
 which switches on <var>type</var> and runs the associated steps: 
     <dl>
@@ -2491,7 +2510,7 @@ <h4 class="heading settled" data-level="6.4.2" id="eventInvariants"><span class=
      <p>No <code class="idl"><a data-link-type="idl" href="#dfn-abort-event" id="ref-for-dfn-abort-event④">abort</a></code>, <code class="idl"><a data-link-type="idl" href="#dfn-load-event" id="ref-for-dfn-load-event⑥">load</a></code>, or <code class="idl"><a class="idl-code" data-link-type="event" href="#dfn-error-event" id="ref-for-dfn-error-event⑨">error</a></code> event fires after <code class="idl"><a data-link-type="idl" href="#dfn-loadend-event" id="ref-for-dfn-loadend-event⑧">loadend</a></code>.</p>
    </ol>
    <h3 class="heading settled" data-level="6.5" id="readingOnThreads"><span class="secno">6.5. </span><span class="content">Reading on Threads</span><a class="self-link" href="#readingOnThreads"></a></h3>
-   <p>Web Workers allow for the use of synchronous <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③④">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④③">Blob</a></code> read APIs,
+   <p>Web Workers allow for the use of synchronous <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③④">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④⑥">Blob</a></code> read APIs,
 since such reads on threads do not block the main thread.
 This section defines a synchronous API, which can be used within Workers [[Web Workers]].
 Workers can avail of both the asynchronous API (the <code class="idl"><a data-link-type="idl" href="#dfn-filereader" id="ref-for-dfn-filereader②②">FileReader</a></code> object) <em>and</em> the synchronous API (the <code class="idl"><a data-link-type="idl" href="#dfn-FileReaderSync" id="ref-for-dfn-FileReaderSync④">FileReaderSync</a></code> object).</p>
@@ -2512,16 +2531,16 @@ <h4 class="heading settled" data-level="6.5.1" id="FileReaderSync"><span class="
      </div>
     </div>
    </div>
-   <p>This interface  provides methods to <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="synchronous read method" data-noexport id="read-method-sync">synchronously read</dfn> <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑤">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④④">Blob</a></code> objects into memory.</p>
+   <p>This interface  provides methods to <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="synchronous read method" data-noexport id="read-method-sync">synchronously read</dfn> <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑤">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④⑦">Blob</a></code> objects into memory.</p>
 <pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed④"><c- g>Exposed</c-></a>=(<c- n>DedicatedWorker</c->,<c- n>SharedWorker</c->)]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="dfn-FileReaderSync"><code><c- g>FileReaderSync</c-></code></dfn> {
   <dfn class="dfn-paneled idl-code" data-dfn-for="FileReaderSync" data-dfn-type="constructor" data-export data-lt="FileReaderSync()|constructor()" id="dom-filereadersync-filereadersync"><code><c- g>constructor</c-></code></dfn>();
   // Synchronously return strings
 
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-ArrayBuffer" id="ref-for-idl-ArrayBuffer⑥"><c- b>ArrayBuffer</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsArrayBufferSync" id="ref-for-dfn-readAsArrayBufferSync"><c- g>readAsArrayBuffer</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑤"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsArrayBuffer(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasarraybuffer-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasarraybuffer-blob-blob"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑨"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsBinaryStringSync" id="ref-for-dfn-readAsBinaryStringSync"><c- g>readAsBinaryString</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑥"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsBinaryString(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasbinarystring-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasbinarystring-blob-blob"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①⓪"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsTextSync" id="ref-for-dfn-readAsTextSync"><c- g>readAsText</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑦"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsText(blob, encoding), FileReaderSync/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readastext-blob-encoding-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readastext-blob-encoding-blob"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①①"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsText(blob, encoding), FileReaderSync/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readastext-blob-encoding-encoding"><code><c- g>encoding</c-></code><a class="self-link" href="#dom-filereadersync-readastext-blob-encoding-encoding"></a></dfn>);
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①②"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsDataURLSync" id="ref-for-dfn-readAsDataURLSync"><c- g>readAsDataURL</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑧"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsDataURL(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasdataurl-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasdataurl-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-ArrayBuffer" id="ref-for-idl-ArrayBuffer⑥"><c- b>ArrayBuffer</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsArrayBufferSync" id="ref-for-dfn-readAsArrayBufferSync"><c- g>readAsArrayBuffer</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑧"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsArrayBuffer(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasarraybuffer-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasarraybuffer-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑨"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsBinaryStringSync" id="ref-for-dfn-readAsBinaryStringSync"><c- g>readAsBinaryString</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob④⑨"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsBinaryString(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasbinarystring-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasbinarystring-blob-blob"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①⓪"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsTextSync" id="ref-for-dfn-readAsTextSync"><c- g>readAsText</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⓪"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsText(blob, encoding), FileReaderSync/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readastext-blob-encoding-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readastext-blob-encoding-blob"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①①"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsText(blob, encoding), FileReaderSync/readAsText(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readastext-blob-encoding-encoding"><code><c- g>encoding</c-></code><a class="self-link" href="#dom-filereadersync-readastext-blob-encoding-encoding"></a></dfn>);
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①②"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-readAsDataURLSync" id="ref-for-dfn-readAsDataURLSync"><c- g>readAsDataURL</c-></a>(<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob⑤①"><c- n>Blob</c-></a> <dfn class="idl-code" data-dfn-for="FileReaderSync/readAsDataURL(blob)" data-dfn-type="argument" data-export id="dom-filereadersync-readasdataurl-blob-blob"><code><c- g>blob</c-></code><a class="self-link" href="#dom-filereadersync-readasdataurl-blob-blob"></a></dfn>);
 };
 </pre>
    <h5 class="heading settled" data-level="6.5.1.1" id="filereadersyncConstrctr"><span class="secno">6.5.1.1. </span><span class="content">Constructors</span><a class="self-link" href="#filereadersyncConstrctr"></a></h5>
@@ -2666,14 +2685,14 @@ <h2 class="heading settled" data-level="7" id="ErrorAndException"><span class="s
 The list below of potential error conditions is <em>informative</em>.</p>
    <ul>
     <li data-md>
-     <p>The <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑥">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob④⑨">Blob</a></code> being accessed may not exist
+     <p>The <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑥">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤②">Blob</a></code> being accessed may not exist
 at the time one of the <a data-link-type="dfn" href="#asynchronous-read-methods" id="ref-for-asynchronous-read-methods">asynchronous read methods</a> or <a data-link-type="dfn" href="#read-method-sync" id="ref-for-read-method-sync①">synchronous read methods</a> are called.
 This may be due to it having been moved or deleted after a reference to it was acquired
 (e.g. concurrent modification with another application).
 See <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror②">NotFoundError</a></code>.</p>
     <li data-md>
-     <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑦">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⓪">Blob</a></code> may be unreadable.
-This may be due to permission problems that occur after a reference to a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑧">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤①">Blob</a></code> has been acquired
+     <p>A <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑦">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤③">Blob</a></code> may be unreadable.
+This may be due to permission problems that occur after a reference to a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑧">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤④">Blob</a></code> has been acquired
 (e.g. concurrent lock with another application).
 Additionally, the <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state⑨">snapshot state</a> may have changed.
 See <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notreadableerror" id="ref-for-notreadableerror">NotReadableError</a></code>.</p>
@@ -2687,8 +2706,8 @@ <h2 class="heading settled" data-level="7" id="ErrorAndException"><span class="s
    </ul>
    <h3 class="heading settled" data-level="7.1" id="dfn-error-codes"><span class="secno">7.1. </span><span class="content">Throwing an Exception or Returning an Error</span><a class="self-link" href="#dfn-error-codes"></a></h3>
    <p><em>This section is normative.</em></p>
-   <p>Error conditions can arise when reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑨">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤②">Blob</a></code>.</p>
-   <p>The <a data-link-type="dfn" href="#readOperation" id="ref-for-readOperation⑤">read operation</a> can terminate due to error conditions when reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④⓪">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤③">Blob</a></code>;
+   <p>Error conditions can arise when reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file③⑨">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑤">Blob</a></code>.</p>
+   <p>The <a data-link-type="dfn" href="#readOperation" id="ref-for-readOperation⑤">read operation</a> can terminate due to error conditions when reading a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④⓪">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑥">Blob</a></code>;
 the particular error condition that causes the <a data-link-type="dfn" href="#blob-get-stream" id="ref-for-blob-get-stream⑧">get stream</a> algorithm to fail
 is called a <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="failureReason">failure reason</dfn>. A <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason①">failure reason</a> is one of <a data-link-type="dfn" href="#NotFoundFR" id="ref-for-NotFoundFR">NotFound</a>, <a data-link-type="dfn" href="#UnsafeFileFR" id="ref-for-UnsafeFileFR">UnsafeFile</a>, <a data-link-type="dfn" href="#TooManyReadsFR" id="ref-for-TooManyReadsFR">TooManyReads</a>, <a data-link-type="dfn" href="#SnapshotStateFR" id="ref-for-SnapshotStateFR">SnapshotState</a>, or <a data-link-type="dfn" href="#FileLockFR" id="ref-for-FileLockFR">FileLock</a>.</p>
    <p>Synchronous read methods <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-throw" id="ref-for-dfn-throw">throw</a> exceptions of the type in the table below
@@ -2706,7 +2725,7 @@ <h3 class="heading settled" data-level="7.1" id="dfn-error-codes"><span class="s
      <tr>
       <td><code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror③">NotFoundError</a></code> 
       <td>
-       If the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④①">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤④">Blob</a></code> resource could not be found at the time the read was processed,
+       If the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④①">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑦">Blob</a></code> resource could not be found at the time the read was processed,
         this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="NotFoundFR">NotFound</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason④">failure reason</a>. 
        <p>For asynchronous read methods the <code class="idl"><a class="idl-code" data-link-type="attribute" href="#dom-filereader-error" id="ref-for-dom-filereader-error③">error</a></code> attribute must return a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror④">NotFoundError</a></code> exception
         and synchronous read methods must <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-throw" id="ref-for-dfn-throw①">throw</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notfounderror" id="ref-for-notfounderror⑤">NotFoundError</a></code> exception.</p>
@@ -2718,7 +2737,7 @@ <h3 class="heading settled" data-level="7.1" id="dfn-error-codes"><span class="s
         <li data-md>
          <p>it is determined that certain files are unsafe for access within a Web application, this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="UnsafeFileFR">UnsafeFile</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason⑤">failure reason</a>.</p>
         <li data-md>
-         <p>it is determined that too many read calls are being made on <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④②">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑤">Blob</a></code> resources, this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="TooManyReadsFR">TooManyReads</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason⑥">failure reason</a>.</p>
+         <p>it is determined that too many read calls are being made on <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④②">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑧">Blob</a></code> resources, this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="TooManyReadsFR">TooManyReads</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason⑥">failure reason</a>.</p>
        </ul>
        <p>For asynchronous read methods the <code class="idl"><a class="idl-code" data-link-type="attribute" href="#dom-filereader-error" id="ref-for-dom-filereader-error④">error</a></code> attribute may return a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror②">SecurityError</a></code> exception
         and synchronous read methods may <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-throw" id="ref-for-dfn-throw②">throw</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#securityerror" id="ref-for-securityerror③">SecurityError</a></code> exception.</p>
@@ -2729,10 +2748,10 @@ <h3 class="heading settled" data-level="7.1" id="dfn-error-codes"><span class="s
        If: 
        <ul>
         <li data-md>
-         <p>the <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state①⓪">snapshot state</a> of a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④③">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑥">Blob</a></code> does not match the state of the underlying storage,
+         <p>the <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state①⓪">snapshot state</a> of a <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④③">File</a></code> or a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑨">Blob</a></code> does not match the state of the underlying storage,
 this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="SnapshotStateFR">SnapshotState</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason⑧">failure reason</a>.</p>
         <li data-md>
-         <p>the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④④">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑦">Blob</a></code> cannot be read,
+         <p>the <code class="idl"><a data-link-type="idl" href="#dfn-file" id="ref-for-dfn-file④④">File</a></code> or <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥⓪">Blob</a></code> cannot be read,
 typically due due to permission problems that occur after a <a data-link-type="dfn" href="#snapshot-state" id="ref-for-snapshot-state①①">snapshot state</a> has been established
 (e.g. concurrent lock on the underlying storage with another application)
 then this is the <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="FileLockFR">FileLock</dfn> <a data-link-type="dfn" href="#failureReason" id="ref-for-failureReason⑨">failure reason</a>.</p>
@@ -2741,24 +2760,24 @@ <h3 class="heading settled" data-level="7.1" id="dfn-error-codes"><span class="s
         and synchronous read methods must <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-throw" id="ref-for-dfn-throw③">throw</a> a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notreadableerror" id="ref-for-notreadableerror③">NotReadableError</a></code> exception.</p>
    </table>
    <h2 class="heading settled" data-level="8" id="url"><span class="secno">8. </span><span class="content">A URL for Blob and MediaSource reference</span><a class="self-link" href="#url"></a></h2>
-   <p>This section defines a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-scheme" id="ref-for-concept-url-scheme">scheme</a> for a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url" id="ref-for-concept-url">URL</a> used to refer to <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑧">Blob</a></code> and <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource">MediaSource</a></code> objects.</p>
+   <p>This section defines a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-scheme" id="ref-for-concept-url-scheme">scheme</a> for a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url" id="ref-for-concept-url">URL</a> used to refer to <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥①">Blob</a></code> and <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource">MediaSource</a></code> objects.</p>
    <h3 class="heading settled" data-level="8.1" id="url-intro"><span class="secno">8.1. </span><span class="content">Introduction</span><a class="self-link" href="#url-intro"></a></h3>
    <p><em>This section is informative.</em></p>
    <p><a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url①">Blob (or object) URLs</a> are URLs like <code>blob:http://example.com/550e8400-e29b-41d4-a716-446655440000</code>.
-This enables integration of <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑤⑨">Blob</a></code>s and <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource①">MediaSource</a></code>s with other
+This enables integration of <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥②">Blob</a></code>s and <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource①">MediaSource</a></code>s with other
 APIs that are only designed to be used with URLs, such as the <code><a data-link-type="element" href="https://html.spec.whatwg.org/multipage/embedded-content.html#the-img-element" id="ref-for-the-img-element">img</a></code> element. <a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url②">Blob URLs</a> can also be used to navigate to as well as to trigger downloads
 of locally generated data.</p>
    <p>For this purpose two static methods are exposed on the <code class="idl"><a data-link-type="idl" href="https://url.spec.whatwg.org/#url" id="ref-for-url">URL</a></code> interface, <code class="idl"><a data-link-type="idl" href="#dfn-createObjectURL" id="ref-for-dfn-createObjectURL">createObjectURL(obj)</a></code> and <code class="idl"><a data-link-type="idl" href="#dfn-revokeObjectURL" id="ref-for-dfn-revokeObjectURL">revokeObjectURL(url)</a></code>.
-The first method creates a mapping from a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url" id="ref-for-concept-url①">URL</a> to a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥⓪">Blob</a></code>,
+The first method creates a mapping from a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url" id="ref-for-concept-url①">URL</a> to a <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥③">Blob</a></code>,
 and the second method revokes said mapping.
-As long as the mapping exist the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥①">Blob</a></code> can’t be garbage collected,
+As long as the mapping exist the <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥④">Blob</a></code> can’t be garbage collected,
 so some care must be taken to revoke the URL as soon as the reference is no longer needed.
 All URLs are revoked when the global that created the URL itself goes away.</p>
    <h3 class="heading settled" data-level="8.2" id="url-model"><span class="secno">8.2. </span><span class="content">Model</span><a class="self-link" href="#url-model"></a></h3>
    <p>Each user agent must maintain a <dfn class="dfn-paneled" data-dfn-type="dfn" data-export id="BlobURLStore">blob URL store</dfn>.
 A <a data-link-type="dfn" href="#BlobURLStore" id="ref-for-BlobURLStore">blob URL store</a> is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-map" id="ref-for-ordered-map">map</a> where <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-getting-the-keys" id="ref-for-map-getting-the-keys">keys</a> are <a data-link-type="dfn" href="https://url.spec.whatwg.org/#valid-url-string" id="ref-for-valid-url-string">valid URL strings</a> and <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-getting-the-values" id="ref-for-map-getting-the-values">values</a> are <a data-link-type="dfn" href="#blob-url-entry" id="ref-for-blob-url-entry">blob URL Entries</a>.</p>
    <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-export id="blob-url-entry">blob URL entry</dfn> consists of
-an <dfn data-dfn-for="blob URL entry" data-dfn-type="dfn" data-export id="blob-url-entry-object">object<a class="self-link" href="#blob-url-entry-object"></a></dfn> (of type <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥②">Blob</a></code> or <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource②">MediaSource</a></code>),
+an <dfn data-dfn-for="blob URL entry" data-dfn-type="dfn" data-export id="blob-url-entry-object">object<a class="self-link" href="#blob-url-entry-object"></a></dfn> (of type <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥⑤">Blob</a></code> or <code class="idl"><a data-link-type="idl" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource②">MediaSource</a></code>),
 and an <dfn class="dfn-paneled" data-dfn-for="blob URL entry" data-dfn-type="dfn" data-export id="blob-url-entry-environment">environment</dfn> (an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object" id="ref-for-environment-settings-object">environment settings object</a>).</p>
    <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-getting-the-keys" id="ref-for-map-getting-the-keys①">Keys</a> in the <a data-link-type="dfn" href="#BlobURLStore" id="ref-for-BlobURLStore①">blob URL store</a> (also known as <dfn class="dfn-paneled" data-dfn-type="dfn" data-export data-lt="blob URL|object URL" id="blob-url">blob URLs</dfn>)
 are <a data-link-type="dfn" href="https://url.spec.whatwg.org/#valid-url-string" id="ref-for-valid-url-string①">valid URL strings</a> that when <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-parser" id="ref-for-concept-url-parser">parsed</a> result in a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url" id="ref-for-concept-url②">URL</a> with a <a data-link-type="dfn" href="https://url.spec.whatwg.org/#concept-url-scheme" id="ref-for-concept-url-scheme①">scheme</a> equal to "<code>blob</code>",
@@ -2775,7 +2794,7 @@ <h3 class="heading settled" data-level="8.2" id="url-model"><span class="secno">
      <li data-md>
       <p>Let <var>origin</var> be <var>settings</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin">origin</a>.</p>
      <li data-md>
-      <p>Let <var>serialized</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin" id="ref-for-ascii-serialisation-of-an-origin">ASCII serialization</a> of <var>origin</var>.</p>
+      <p>Let <var>serialized</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#ascii-serialisation-of-an-origin" id="ref-for-ascii-serialisation-of-an-origin">ASCII serialization</a> of <var>origin</var>.</p>
      <li data-md>
       <p>If <var>serialized</var> is "<code>null</code>", set it to an implementation-defined value.</p>
      <li data-md>
@@ -2843,7 +2862,7 @@ <h4 class="heading settled" data-level="8.3.1" id="originOfBlobURL"><span class=
 but for opaque origins the origin itself might be distinct. This difference isn’t
 observable though, since a revoked blob URL can’t be resolved/fetched anymore anyway.</p>
    <h4 class="heading settled dfn-paneled" data-dfn-for="blob url" data-dfn-type="dfn" data-export data-level="8.3.2" data-lt="lifetime|lifetime stipulation" id="lifeTime"><span class="secno">8.3.2. </span><span class="content">Lifetime of blob URLs</span><a class="self-link" href="#lifeTime" id="ref-for-lifeTime"></a></h4>
-   <p>This specification extends the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsing-the-web.html#unloading-document-cleanup-steps" id="ref-for-unloading-document-cleanup-steps">unloading document cleanup steps</a> with the following steps:</p>
+   <p>This specification extends the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-lifecycle.html#unloading-document-cleanup-steps" id="ref-for-unloading-document-cleanup-steps">unloading document cleanup steps</a> with the following steps:</p>
    <ol>
     <li data-md>
      <p>Let <var>environment</var> be the <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document">Document</a></code>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object">relevant settings object</a>.</p>
@@ -2861,7 +2880,7 @@ <h3 class="heading settled" data-level="8.4" id="creating-revoking"><span class=
 This section describes a supplemental interface to the URL specification <a data-link-type="biblio" href="#biblio-url">[URL]</a> and presents methods for <a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url⑦">blob URL</a> creation and revocation.</p>
 <pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed⑤"><c- g>Exposed</c-></a>=(<c- n>Window</c->,<c- n>DedicatedWorker</c->,<c- n>SharedWorker</c->)]
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://url.spec.whatwg.org/#url" id="ref-for-url②"><c- g>URL</c-></a> {
-  <c- b>static</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①③"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-createObjectURL" id="ref-for-dfn-createObjectURL①"><c- g>createObjectURL</c-></a>((<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob⑥③"><c- n>Blob</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource③"><c- n>MediaSource</c-></a>) <dfn class="idl-code" data-dfn-for="URL/createObjectURL(obj)" data-dfn-type="argument" data-export id="dom-url-createobjecturl-obj-obj"><code><c- g>obj</c-></code><a class="self-link" href="#dom-url-createobjecturl-obj-obj"></a></dfn>);
+  <c- b>static</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①③"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-createObjectURL" id="ref-for-dfn-createObjectURL①"><c- g>createObjectURL</c-></a>((<a data-link-type="idl-name" href="#dfn-Blob" id="ref-for-dfn-Blob⑥⑥"><c- n>Blob</c-></a> <c- b>or</c-> <a data-link-type="idl-name" href="http://w3c.github.io/media-source/#mediasource" id="ref-for-mediasource③"><c- n>MediaSource</c-></a>) <dfn class="idl-code" data-dfn-for="URL/createObjectURL(obj)" data-dfn-type="argument" data-export id="dom-url-createobjecturl-obj-obj"><code><c- g>obj</c-></code><a class="self-link" href="#dom-url-createobjecturl-obj-obj"></a></dfn>);
   <c- b>static</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined⑤"><c- b>undefined</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-revokeObjectURL" id="ref-for-dfn-revokeObjectURL①"><c- g>revokeObjectURL</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①④"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="URL/revokeObjectURL(url)" data-dfn-type="argument" data-export id="dom-url-revokeobjecturl-url-url"><code><c- g>url</c-></code><a class="self-link" href="#dom-url-revokeobjecturl-url-url"></a></dfn>);
 };
 </pre>
@@ -2915,7 +2934,7 @@ <h3 class="heading settled" data-level="8.4" id="creating-revoking"><span class=
      <li data-md>
       <p>Let <var>settings</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#current-settings-object" id="ref-for-current-settings-object②">current settings object</a>.</p>
      <li data-md>
-      <p>If <var>origin</var> is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/origin.html#same-origin" id="ref-for-same-origin">same origin</a> with <var>settings</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin①">origin</a>, return.</p>
+      <p>If <var>origin</var> is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin" id="ref-for-same-origin">same origin</a> with <var>settings</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-origin" id="ref-for-concept-settings-object-origin①">origin</a>, return.</p>
      <li data-md>
       <p><a data-link-type="dfn" href="#removeTheEntry" id="ref-for-removeTheEntry">Remove an entry from the Blob URL Store</a> for <var>url</var>.</p>
     </ol>
@@ -2926,7 +2945,7 @@ <h3 class="heading settled" data-level="8.4" id="creating-revoking"><span class=
    </div>
    <div class="example" id="example-8201d564">
     <a class="self-link" href="#example-8201d564"></a> In the example below, <code>window1</code> and <code>window2</code> are separate,
-  but in the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/origin.html#same-origin" id="ref-for-same-origin①">same origin</a>; <code>window2</code> could be an <code><a data-link-type="element" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element" id="ref-for-the-iframe-element">iframe</a></code> inside <code>window1</code>. 
+  but in the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin" id="ref-for-same-origin①">same origin</a>; <code>window2</code> could be an <code><a data-link-type="element" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element" id="ref-for-the-iframe-element">iframe</a></code> inside <code>window1</code>. 
 <pre class="lang-javascript highlight">myurl <c- o>=</c-> window1<c- p>.</c->URL<c- p>.</c->createObjectURL<c- p>(</c->myblob<c- p>);</c->
 window2<c- p>.</c->URL<c- p>.</c->revokeObjectURL<c- p>(</c->myurl<c- p>);</c->
 </pre>
@@ -2936,7 +2955,7 @@ <h3 class="heading settled" data-level="8.4" id="creating-revoking"><span class=
   ensures that subsequent dereferencing of <code>myurl</code> results in a the user agent acting as if a <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-network-error" id="ref-for-concept-network-error②">network error</a> has occurred.</p>
    </div>
    <h4 class="heading settled" data-level="8.4.1" id="examplesOfCreationRevocation"><span class="secno">8.4.1. </span><span class="content">Examples of blob URL Creation and Revocation</span><a class="self-link" href="#examplesOfCreationRevocation"></a></h4>
-   <p><a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url⑧">Blob URL</a>s are strings that are used to <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-fetch" id="ref-for-concept-fetch①">fetch</a> <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥④">Blob</a></code> objects,
+   <p><a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url⑧">Blob URL</a>s are strings that are used to <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-fetch" id="ref-for-concept-fetch①">fetch</a> <code class="idl"><a data-link-type="idl" href="#dfn-Blob" id="ref-for-dfn-Blob⑥⑦">Blob</a></code> objects,
 and can persist for as long as the <code>document</code> from which they were minted
 using <code>URL.<code class="idl"><a data-link-type="idl" href="#dfn-createObjectURL" id="ref-for-dfn-createObjectURL②">createObjectURL()</a></code></code>—<wbr>see <a href="#lifeTime" id="ref-for-lifeTime①">§ 8.3.2 Lifetime of blob URLs</a>.</p>
    <p>This section gives sample usage of creation and revocation of <a data-link-type="dfn" href="#blob-url" id="ref-for-blob-url⑨">blob URL</a>s with explanations.</p>
@@ -3243,6 +3262,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#dfn-revokeObjectURL">revokeObjectURL(url)</a><span>, in § 8.4</span>
    <li><a href="#dfn-size">size</a><span>, in § 3.2</span>
    <li><a href="#dfn-slice">slice()</a><span>, in § 3.3.1</span>
+   <li><a href="#slice-blob">slice blob</a><span>, in § 2</span>
    <li><a href="#dfn-slice">slice(start)</a><span>, in § 3.3.1</span>
    <li><a href="#dfn-slice">slice(start, end)</a><span>, in § 3.3.1</span>
    <li><a href="#dfn-slice">slice(start, end, contentType)</a><span>, in § 3.3.1</span>
@@ -3380,7 +3400,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-ascii-serialisation-of-an-origin">
-   <a href="https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin">https://html.spec.whatwg.org/multipage/origin.html#ascii-serialisation-of-an-origin</a><b>Referenced in:</b>
+   <a href="https://html.spec.whatwg.org/multipage/browsers.html#ascii-serialisation-of-an-origin">https://html.spec.whatwg.org/multipage/browsers.html#ascii-serialisation-of-an-origin</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-ascii-serialisation-of-an-origin">8.2. Model</a>
    </ul>
@@ -3496,7 +3516,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-same-origin">
-   <a href="https://html.spec.whatwg.org/multipage/origin.html#same-origin">https://html.spec.whatwg.org/multipage/origin.html#same-origin</a><b>Referenced in:</b>
+   <a href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin">https://html.spec.whatwg.org/multipage/browsers.html#same-origin</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-same-origin">8.4. Creating and Revoking a blob URL</a> <a href="#ref-for-same-origin①">(2)</a>
    </ul>
@@ -3542,7 +3562,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-unloading-document-cleanup-steps">
-   <a href="https://html.spec.whatwg.org/multipage/browsing-the-web.html#unloading-document-cleanup-steps">https://html.spec.whatwg.org/multipage/browsing-the-web.html#unloading-document-cleanup-steps</a><b>Referenced in:</b>
+   <a href="https://html.spec.whatwg.org/multipage/document-lifecycle.html#unloading-document-cleanup-steps">https://html.spec.whatwg.org/multipage/document-lifecycle.html#unloading-document-cleanup-steps</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-unloading-document-cleanup-steps">8.3.2. Lifetime of blob URLs</a>
    </ul>
@@ -3550,8 +3570,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-ascii-lowercase">
    <a href="https://infra.spec.whatwg.org/#ascii-lowercase">https://infra.spec.whatwg.org/#ascii-lowercase</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-ascii-lowercase">3.1. Constructors</a>
-    <li><a href="#ref-for-ascii-lowercase①">3.3.1. The slice() method</a>
+    <li><a href="#ref-for-ascii-lowercase">2. Terminology and Algorithms</a>
+    <li><a href="#ref-for-ascii-lowercase①">3.1. Constructors</a>
     <li><a href="#ref-for-ascii-lowercase②">4.1. Constructor</a>
    </ul>
   </aside>
@@ -3564,12 +3584,12 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-byte">
    <a href="https://infra.spec.whatwg.org/#byte">https://infra.spec.whatwg.org/#byte</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-byte">3. The Blob Interface and Binary Data</a> <a href="#ref-for-byte①">(2)</a>
-    <li><a href="#ref-for-byte②">3.1. Constructors</a>
-    <li><a href="#ref-for-byte③">3.2. Attributes</a> <a href="#ref-for-byte④">(2)</a> <a href="#ref-for-byte⑤">(3)</a>
-    <li><a href="#ref-for-byte⑥">3.3.1. The slice() method</a> <a href="#ref-for-byte⑦">(2)</a>
-    <li><a href="#ref-for-byte⑧">4. The File Interface</a> <a href="#ref-for-byte⑨">(2)</a>
-    <li><a href="#ref-for-byte①⓪">4.1. Constructor</a> <a href="#ref-for-byte①①">(2)</a>
+    <li><a href="#ref-for-byte">2. Terminology and Algorithms</a> <a href="#ref-for-byte①">(2)</a> <a href="#ref-for-byte②">(3)</a>
+    <li><a href="#ref-for-byte③">3. The Blob Interface and Binary Data</a> <a href="#ref-for-byte④">(2)</a>
+    <li><a href="#ref-for-byte⑤">3.1. Constructors</a>
+    <li><a href="#ref-for-byte⑥">3.2. Attributes</a> <a href="#ref-for-byte⑦">(2)</a> <a href="#ref-for-byte⑧">(3)</a>
+    <li><a href="#ref-for-byte⑨">4. The File Interface</a> <a href="#ref-for-byte①⓪">(2)</a>
+    <li><a href="#ref-for-byte①①">4.1. Constructor</a> <a href="#ref-for-byte①②">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-byte-sequence">
@@ -4229,9 +4249,9 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
   <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="DOMString" href="#dfn-type"><c- g>type</c-></a>;
 
   // slice Blob into byte-ranged chunks
-  <a data-link-type="idl-name" href="#dfn-Blob"><c- n>Blob</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-slice"><c- g>slice</c-></a>(<c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-start"><c- g>start</c-></a>,
-            <c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-end"><c- g>end</c-></a>,
-            <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a class="idl-code" data-link-type="argument" href="#dfn-contentTypeBlob"><c- g>contentType</c-></a>);
+  <a data-link-type="idl-name" href="#dfn-Blob"><c- n>Blob</c-></a> <a class="idl-code" data-link-type="method" href="#dfn-slice"><c- g>slice</c-></a>(<c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <a href="#dom-blob-slice-start-end-contenttype-start"><code><c- g>start</c-></code></a>,
+            <c- b>optional</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Clamp"><c- g>Clamp</c-></a>] <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-long-long"><c- b>long</c-> <c- b>long</c-></a> <a href="#dom-blob-slice-start-end-contenttype-end"><code><c- g>end</c-></code></a>,
+            <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a href="#dom-blob-slice-start-end-contenttype-contenttype"><code><c- g>contentType</c-></code></a>);
 
   // read from the Blob.
   [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#NewObject"><c- g>NewObject</c-></a>] <a data-link-type="idl-name" href="https://streams.spec.whatwg.org/#readablestream"><c- n>ReadableStream</c-></a> <a class="idl-code" data-link-type="method" href="#dom-blob-stream"><c- g>stream</c-></a>();
@@ -4340,6 +4360,13 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-UnixEpoch②">4.2. Attributes</a> <a href="#ref-for-UnixEpoch③">(2)</a>
    </ul>
   </aside>
+  <aside class="dfn-panel" data-for="slice-blob">
+   <b><a href="#slice-blob">#slice-blob</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-slice-blob">2. Terminology and Algorithms</a> <a href="#ref-for-slice-blob①">(2)</a>
+    <li><a href="#ref-for-slice-blob②">3.3.1. The slice() method</a>
+   </ul>
+  </aside>
   <aside class="dfn-panel" data-for="snapshot-state">
    <b><a href="#snapshot-state">#snapshot-state</a></b><b>Referenced in:</b>
    <ul>
@@ -4353,27 +4380,28 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <b><a href="#dfn-Blob">#dfn-Blob</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-Blob⑤">1. Introduction</a> <a href="#ref-for-dfn-Blob⑥">(2)</a> <a href="#ref-for-dfn-Blob⑦">(3)</a>
-    <li><a href="#ref-for-dfn-Blob⑧">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-Blob⑨">(2)</a> <a href="#ref-for-dfn-Blob①⓪">(3)</a> <a href="#ref-for-dfn-Blob①①">(4)</a> <a href="#ref-for-dfn-Blob①②">(5)</a> <a href="#ref-for-dfn-Blob①③">(6)</a>
-    <li><a href="#ref-for-dfn-Blob①④">3.1. Constructors</a> <a href="#ref-for-dfn-Blob①⑤">(2)</a>
-    <li><a href="#ref-for-dfn-Blob①⑥">3.1.1. Constructor Parameters</a> <a href="#ref-for-dfn-Blob①⑦">(2)</a> <a href="#ref-for-dfn-Blob①⑧">(3)</a> <a href="#ref-for-dfn-Blob①⑨">(4)</a> <a href="#ref-for-dfn-Blob②⓪">(5)</a> <a href="#ref-for-dfn-Blob②①">(6)</a>
-    <li><a href="#ref-for-dfn-Blob②②">3.2. Attributes</a> <a href="#ref-for-dfn-Blob②③">(2)</a> <a href="#ref-for-dfn-Blob②④">(3)</a> <a href="#ref-for-dfn-Blob②⑤">(4)</a> <a href="#ref-for-dfn-Blob②⑥">(5)</a>
-    <li><a href="#ref-for-dfn-Blob②⑦">3.3.1. The slice() method</a> <a href="#ref-for-dfn-Blob②⑧">(2)</a> <a href="#ref-for-dfn-Blob②⑨">(3)</a>
-    <li><a href="#ref-for-dfn-Blob③⓪">4. The File Interface</a> <a href="#ref-for-dfn-Blob③①">(2)</a>
-    <li><a href="#ref-for-dfn-Blob③②">4.1.1. Constructor Parameters</a>
-    <li><a href="#ref-for-dfn-Blob③③">4.2. Attributes</a>
-    <li><a href="#ref-for-dfn-Blob③④">6.1. The File Reading Task Source</a>
-    <li><a href="#ref-for-dfn-Blob③⑤">6.2. The FileReader API</a> <a href="#ref-for-dfn-Blob③⑥">(2)</a> <a href="#ref-for-dfn-Blob③⑦">(3)</a> <a href="#ref-for-dfn-Blob③⑧">(4)</a>
-    <li><a href="#ref-for-dfn-Blob③⑨">6.2.2. FileReader States</a> <a href="#ref-for-dfn-Blob④⓪">(2)</a> <a href="#ref-for-dfn-Blob④①">(3)</a>
-    <li><a href="#ref-for-dfn-Blob④②">6.3. Packaging data</a>
-    <li><a href="#ref-for-dfn-Blob④③">6.5. Reading on Threads</a>
-    <li><a href="#ref-for-dfn-Blob④④">6.5.1. The FileReaderSync API</a> <a href="#ref-for-dfn-Blob④⑤">(2)</a> <a href="#ref-for-dfn-Blob④⑥">(3)</a> <a href="#ref-for-dfn-Blob④⑦">(4)</a> <a href="#ref-for-dfn-Blob④⑧">(5)</a>
-    <li><a href="#ref-for-dfn-Blob④⑨">7. Errors and Exceptions</a> <a href="#ref-for-dfn-Blob⑤⓪">(2)</a> <a href="#ref-for-dfn-Blob⑤①">(3)</a>
-    <li><a href="#ref-for-dfn-Blob⑤②">7.1. Throwing an Exception or Returning an Error</a> <a href="#ref-for-dfn-Blob⑤③">(2)</a> <a href="#ref-for-dfn-Blob⑤④">(3)</a> <a href="#ref-for-dfn-Blob⑤⑤">(4)</a> <a href="#ref-for-dfn-Blob⑤⑥">(5)</a> <a href="#ref-for-dfn-Blob⑤⑦">(6)</a>
-    <li><a href="#ref-for-dfn-Blob⑤⑧">8. A URL for Blob and MediaSource reference</a>
-    <li><a href="#ref-for-dfn-Blob⑤⑨">8.1. Introduction</a> <a href="#ref-for-dfn-Blob⑥⓪">(2)</a> <a href="#ref-for-dfn-Blob⑥①">(3)</a>
-    <li><a href="#ref-for-dfn-Blob⑥②">8.2. Model</a>
-    <li><a href="#ref-for-dfn-Blob⑥③">8.4. Creating and Revoking a blob URL</a>
-    <li><a href="#ref-for-dfn-Blob⑥④">8.4.1. Examples of blob URL Creation and Revocation</a>
+    <li><a href="#ref-for-dfn-Blob⑧">2. Terminology and Algorithms</a> <a href="#ref-for-dfn-Blob⑨">(2)</a> <a href="#ref-for-dfn-Blob①⓪">(3)</a> <a href="#ref-for-dfn-Blob①①">(4)</a>
+    <li><a href="#ref-for-dfn-Blob①②">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-Blob①③">(2)</a> <a href="#ref-for-dfn-Blob①④">(3)</a> <a href="#ref-for-dfn-Blob①⑤">(4)</a> <a href="#ref-for-dfn-Blob①⑥">(5)</a> <a href="#ref-for-dfn-Blob①⑦">(6)</a>
+    <li><a href="#ref-for-dfn-Blob①⑧">3.1. Constructors</a> <a href="#ref-for-dfn-Blob①⑨">(2)</a>
+    <li><a href="#ref-for-dfn-Blob②⓪">3.1.1. Constructor Parameters</a> <a href="#ref-for-dfn-Blob②①">(2)</a> <a href="#ref-for-dfn-Blob②②">(3)</a> <a href="#ref-for-dfn-Blob②③">(4)</a> <a href="#ref-for-dfn-Blob②④">(5)</a> <a href="#ref-for-dfn-Blob②⑤">(6)</a>
+    <li><a href="#ref-for-dfn-Blob②⑥">3.2. Attributes</a> <a href="#ref-for-dfn-Blob②⑦">(2)</a> <a href="#ref-for-dfn-Blob②⑧">(3)</a> <a href="#ref-for-dfn-Blob②⑨">(4)</a> <a href="#ref-for-dfn-Blob③⓪">(5)</a>
+    <li><a href="#ref-for-dfn-Blob③①">3.3.1. The slice() method</a> <a href="#ref-for-dfn-Blob③②">(2)</a>
+    <li><a href="#ref-for-dfn-Blob③③">4. The File Interface</a> <a href="#ref-for-dfn-Blob③④">(2)</a>
+    <li><a href="#ref-for-dfn-Blob③⑤">4.1.1. Constructor Parameters</a>
+    <li><a href="#ref-for-dfn-Blob③⑥">4.2. Attributes</a>
+    <li><a href="#ref-for-dfn-Blob③⑦">6.1. The File Reading Task Source</a>
+    <li><a href="#ref-for-dfn-Blob③⑧">6.2. The FileReader API</a> <a href="#ref-for-dfn-Blob③⑨">(2)</a> <a href="#ref-for-dfn-Blob④⓪">(3)</a> <a href="#ref-for-dfn-Blob④①">(4)</a>
+    <li><a href="#ref-for-dfn-Blob④②">6.2.2. FileReader States</a> <a href="#ref-for-dfn-Blob④③">(2)</a> <a href="#ref-for-dfn-Blob④④">(3)</a>
+    <li><a href="#ref-for-dfn-Blob④⑤">6.3. Packaging data</a>
+    <li><a href="#ref-for-dfn-Blob④⑥">6.5. Reading on Threads</a>
+    <li><a href="#ref-for-dfn-Blob④⑦">6.5.1. The FileReaderSync API</a> <a href="#ref-for-dfn-Blob④⑧">(2)</a> <a href="#ref-for-dfn-Blob④⑨">(3)</a> <a href="#ref-for-dfn-Blob⑤⓪">(4)</a> <a href="#ref-for-dfn-Blob⑤①">(5)</a>
+    <li><a href="#ref-for-dfn-Blob⑤②">7. Errors and Exceptions</a> <a href="#ref-for-dfn-Blob⑤③">(2)</a> <a href="#ref-for-dfn-Blob⑤④">(3)</a>
+    <li><a href="#ref-for-dfn-Blob⑤⑤">7.1. Throwing an Exception or Returning an Error</a> <a href="#ref-for-dfn-Blob⑤⑥">(2)</a> <a href="#ref-for-dfn-Blob⑤⑦">(3)</a> <a href="#ref-for-dfn-Blob⑤⑧">(4)</a> <a href="#ref-for-dfn-Blob⑤⑨">(5)</a> <a href="#ref-for-dfn-Blob⑥⓪">(6)</a>
+    <li><a href="#ref-for-dfn-Blob⑥①">8. A URL for Blob and MediaSource reference</a>
+    <li><a href="#ref-for-dfn-Blob⑥②">8.1. Introduction</a> <a href="#ref-for-dfn-Blob⑥③">(2)</a> <a href="#ref-for-dfn-Blob⑥④">(3)</a>
+    <li><a href="#ref-for-dfn-Blob⑥⑤">8.2. Model</a>
+    <li><a href="#ref-for-dfn-Blob⑥⑥">8.4. Creating and Revoking a blob URL</a>
+    <li><a href="#ref-for-dfn-Blob⑥⑦">8.4.1. Examples of blob URL Creation and Revocation</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-blob-blob">
@@ -4477,20 +4505,21 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="dfn-size">
    <b><a href="#dfn-size">#dfn-size</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-size">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-size①">(2)</a>
-    <li><a href="#ref-for-dfn-size②">3.1. Constructors</a> <a href="#ref-for-dfn-size③">(2)</a>
-    <li><a href="#ref-for-dfn-size④">3.3.1. The slice() method</a> <a href="#ref-for-dfn-size⑤">(2)</a> <a href="#ref-for-dfn-size⑥">(3)</a>
-    <li><a href="#ref-for-dfn-size⑦">4.1. Constructor</a>
+    <li><a href="#ref-for-dfn-size">2. Terminology and Algorithms</a> <a href="#ref-for-dfn-size①">(2)</a>
+    <li><a href="#ref-for-dfn-size②">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-size③">(2)</a>
+    <li><a href="#ref-for-dfn-size④">3.1. Constructors</a> <a href="#ref-for-dfn-size⑤">(2)</a>
+    <li><a href="#ref-for-dfn-size⑥">4.1. Constructor</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dfn-type">
    <b><a href="#dfn-type">#dfn-type</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-type">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-type①">(2)</a>
-    <li><a href="#ref-for-dfn-type②">3.1. Constructors</a> <a href="#ref-for-dfn-type③">(2)</a>
-    <li><a href="#ref-for-dfn-type④">3.1.1. Constructor Parameters</a> <a href="#ref-for-dfn-type⑤">(2)</a>
-    <li><a href="#ref-for-dfn-type⑥">3.2. Attributes</a> <a href="#ref-for-dfn-type⑦">(2)</a> <a href="#ref-for-dfn-type⑧">(3)</a>
-    <li><a href="#ref-for-dfn-type⑨">3.3.1. The slice() method</a> <a href="#ref-for-dfn-type①⓪">(2)</a>
+    <li><a href="#ref-for-dfn-type">2. Terminology and Algorithms</a>
+    <li><a href="#ref-for-dfn-type①">3. The Blob Interface and Binary Data</a> <a href="#ref-for-dfn-type②">(2)</a>
+    <li><a href="#ref-for-dfn-type③">3.1. Constructors</a> <a href="#ref-for-dfn-type④">(2)</a>
+    <li><a href="#ref-for-dfn-type⑤">3.1.1. Constructor Parameters</a> <a href="#ref-for-dfn-type⑥">(2)</a>
+    <li><a href="#ref-for-dfn-type⑦">3.2. Attributes</a> <a href="#ref-for-dfn-type⑧">(2)</a> <a href="#ref-for-dfn-type⑨">(3)</a>
+    <li><a href="#ref-for-dfn-type①⓪">3.3.1. The slice() method</a>
     <li><a href="#ref-for-dfn-type①①">4. The File Interface</a> <a href="#ref-for-dfn-type①②">(2)</a>
     <li><a href="#ref-for-dfn-type①③">4.1. Constructor</a>
     <li><a href="#ref-for-dfn-type①④">6.2. The FileReader API</a>
@@ -4506,28 +4535,7 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <ul>
     <li><a href="#ref-for-dfn-slice">3. The Blob Interface and Binary Data</a>
     <li><a href="#ref-for-dfn-slice①">3.2. Attributes</a>
-    <li><a href="#ref-for-dfn-slice②">3.3.1. The slice() method</a> <a href="#ref-for-dfn-slice③">(2)</a> <a href="#ref-for-dfn-slice④">(3)</a> <a href="#ref-for-dfn-slice⑤">(4)</a> <a href="#ref-for-dfn-slice⑥">(5)</a> <a href="#ref-for-dfn-slice⑦">(6)</a> <a href="#ref-for-dfn-slice⑧">(7)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dfn-start">
-   <b><a href="#dfn-start">#dfn-start</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dfn-start">3. The Blob Interface and Binary Data</a>
-    <li><a href="#ref-for-dfn-start①">3.3.1. The slice() method</a> <a href="#ref-for-dfn-start②">(2)</a> <a href="#ref-for-dfn-start③">(3)</a> <a href="#ref-for-dfn-start④">(4)</a> <a href="#ref-for-dfn-start⑤">(5)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dfn-end">
-   <b><a href="#dfn-end">#dfn-end</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dfn-end">3. The Blob Interface and Binary Data</a>
-    <li><a href="#ref-for-dfn-end①">3.3.1. The slice() method</a> <a href="#ref-for-dfn-end②">(2)</a> <a href="#ref-for-dfn-end③">(3)</a> <a href="#ref-for-dfn-end④">(4)</a>
-   </ul>
-  </aside>
-  <aside class="dfn-panel" data-for="dfn-contentTypeBlob">
-   <b><a href="#dfn-contentTypeBlob">#dfn-contentTypeBlob</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dfn-contentTypeBlob">3. The Blob Interface and Binary Data</a>
-    <li><a href="#ref-for-dfn-contentTypeBlob①">3.3.1. The slice() method</a> <a href="#ref-for-dfn-contentTypeBlob②">(2)</a> <a href="#ref-for-dfn-contentTypeBlob③">(3)</a> <a href="#ref-for-dfn-contentTypeBlob④">(4)</a>
+    <li><a href="#ref-for-dfn-slice②">3.3.1. The slice() method</a> <a href="#ref-for-dfn-slice③">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-blob-stream">