diff --git a/index.html b/index.html
index 7e5f173..a214eb2 100644
--- a/index.html
+++ b/index.html
@@ -6,7 +6,7 @@
   <link href="https://www.w3.org/StyleSheets/TR/2021/cg-draft" rel="stylesheet">
   <meta content="Bikeshed version 82ce88815, updated Thu Sep 7 16:33:55 2023 -0700" name="generator">
   <link href="https://wicg.github.io/observable/" rel="canonical">
-  <meta content="5a1480b58602d3fb5332a0f05582b5fe4918fbf7" name="document-revision">
+  <meta content="d5a14ab5e92a0ab18a26f2f68290c8ad611d4e20" name="document-revision">
 <style>
 /* Put nice boxes around each algorithm. */
 [data-algorithm]:not(.heading) {
@@ -1074,7 +1074,8 @@ <h3 class="heading settled" data-level="2.1" id="subscriber-api"><span class="se
     </ol>
    </div>
    <div class="algorithm" data-algorithm="close a subscription">
-     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="close-a-subscription">close a subscription</dfn> given a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber⑧">Subscriber</a></code> <var>subscriber</var>, run these steps: 
+     To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="close-a-subscription">close a subscription</dfn> given a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber⑧">Subscriber</a></code> <var>subscriber</var>, and
+  an optional <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②">any</a></code> <var>reason</var>, run these steps: 
     <ol>
      <li data-md>
       <p>If <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-active" id="ref-for-subscriber-active⑤">active</a> is false, then return.</p>
@@ -1104,8 +1105,7 @@ <h3 class="heading settled" data-level="2.1" id="subscriber-api"><span class="se
      <li data-md>
       <p>Set <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-active" id="ref-for-subscriber-active⑥">active</a> boolean to false.</p>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-signal-abort" id="ref-for-abortsignal-signal-abort">Signal abort</a> <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller①">subscription controller</a>.</p>
-      <p class="issue" id="issue-cedd8971"><a class="self-link" href="#issue-cedd8971"></a> Abort with an appropriate abort reason.</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-signal-abort" id="ref-for-abortsignal-signal-abort">Signal abort</a> <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller①">subscription controller</a> with <var>reason</var>, if it is given.</p>
      <li data-md>
       <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-iterate" id="ref-for-list-iterate">For each</a> <var>teardown</var> of <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-teardown-callbacks" id="ref-for-subscriber-teardown-callbacks①">teardown callbacks</a> sorted in
  reverse insertion order:</p>
@@ -1125,7 +1125,7 @@ <h3 class="heading settled" data-level="2.2" id="observable-api"><span class="se
 <pre class="idl highlight def">// SubscribeCallback is where the Observable "creator’s" code lives. It’s
 // called when subscribe() is called, to set up a new subscription.
 <c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-subscribecallback"><code><c- g>SubscribeCallback</c-></code></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 data-link-type="idl-name" href="#subscriber" id="ref-for-subscriber⑨"><c- n>Subscriber</c-></a> <dfn class="idl-code" data-dfn-for="SubscribeCallback" data-dfn-type="argument" data-export id="dom-subscribecallback-subscriber"><code><c- g>subscriber</c-></code><a class="self-link" href="#dom-subscribecallback-subscriber"></a></dfn>);
-<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-observablesubscriptioncallback"><code><c- g>ObservableSubscriptionCallback</c-></code></dfn> = <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="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="ObservableSubscriptionCallback" data-dfn-type="argument" data-export id="dom-observablesubscriptioncallback-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-observablesubscriptioncallback-value"></a></dfn>);
+<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-observablesubscriptioncallback"><code><c- g>ObservableSubscriptionCallback</c-></code></dfn> = <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="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any③"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="ObservableSubscriptionCallback" data-dfn-type="argument" data-export id="dom-observablesubscriptioncallback-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-observablesubscriptioncallback-value"></a></dfn>);
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-subscriptionobserver"><code><c- g>SubscriptionObserver</c-></code></dfn> {
   <a data-link-type="idl-name" href="#callbackdef-observablesubscriptioncallback" id="ref-for-callbackdef-observablesubscriptioncallback"><c- n>ObservableSubscriptionCallback</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="SubscriptionObserver" data-dfn-type="dict-member" data-export data-type="ObservableSubscriptionCallback " id="dom-subscriptionobserver-next"><code><c- g>next</c-></code></dfn>;
@@ -1139,12 +1139,12 @@ <h3 class="heading settled" data-level="2.2" id="observable-api"><span class="se
   <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal①"><c- n>AbortSignal</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="SubscribeOptions" data-dfn-type="dict-member" data-export data-type="AbortSignal " id="dom-subscribeoptions-signal"><code><c- g>signal</c-></code></dfn>;
 };
 
-<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-predicate"><code><c- g>Predicate</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any③"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Predicate" data-dfn-type="argument" data-export id="dom-predicate-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-predicate-value"></a></dfn>, <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> <dfn class="idl-code" data-dfn-for="Predicate" data-dfn-type="argument" data-export id="dom-predicate-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-predicate-index"></a></dfn>);
-<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-reducer"><code><c- g>Reducer</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any④"><c- b>any</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑤"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Reducer" data-dfn-type="argument" data-export id="dom-reducer-accumulator"><code><c- g>accumulator</c-></code><a class="self-link" href="#dom-reducer-accumulator"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑥"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Reducer" data-dfn-type="argument" data-export id="dom-reducer-currentvalue"><code><c- g>currentValue</c-></code><a class="self-link" href="#dom-reducer-currentvalue"></a></dfn>);
-<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-mapper"><code><c- g>Mapper</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑦"><c- b>any</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑧"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Mapper" data-dfn-type="argument" data-export id="dom-mapper-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-mapper-value"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Mapper" data-dfn-type="argument" data-export id="dom-mapper-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-mapper-index"></a></dfn>);
+<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-predicate"><code><c- g>Predicate</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any④"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Predicate" data-dfn-type="argument" data-export id="dom-predicate-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-predicate-value"></a></dfn>, <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> <dfn class="idl-code" data-dfn-for="Predicate" data-dfn-type="argument" data-export id="dom-predicate-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-predicate-index"></a></dfn>);
+<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-reducer"><code><c- g>Reducer</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑤"><c- b>any</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑥"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Reducer" data-dfn-type="argument" data-export id="dom-reducer-accumulator"><code><c- g>accumulator</c-></code><a class="self-link" href="#dom-reducer-accumulator"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑦"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Reducer" data-dfn-type="argument" data-export id="dom-reducer-currentvalue"><code><c- g>currentValue</c-></code><a class="self-link" href="#dom-reducer-currentvalue"></a></dfn>);
+<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-mapper"><code><c- g>Mapper</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑧"><c- b>any</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑨"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Mapper" data-dfn-type="argument" data-export id="dom-mapper-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-mapper-value"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Mapper" data-dfn-type="argument" data-export id="dom-mapper-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-mapper-index"></a></dfn>);
 // Differs from Mapper only in return type, since this callback is exclusively
 // used to visit each element in a sequence, not transform it.
-<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-visitor"><code><c- g>Visitor</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined⑥"><c- b>undefined</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any⑨"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Visitor" data-dfn-type="argument" data-export id="dom-visitor-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-visitor-value"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long②"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Visitor" data-dfn-type="argument" data-export id="dom-visitor-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-visitor-index"></a></dfn>);
+<c- b>callback</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="callback" data-export id="callbackdef-visitor"><code><c- g>Visitor</c-></code></dfn> = <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined⑥"><c- b>undefined</c-></a> (<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⓪"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Visitor" data-dfn-type="argument" data-export id="dom-visitor-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-visitor-value"></a></dfn>, <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long②"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Visitor" data-dfn-type="argument" data-export id="dom-visitor-index"><code><c- g>index</c-></code><a class="self-link" href="#dom-visitor-index"></a></dfn>);
 
 [Exposed=*]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="observable"><code><c- g>Observable</c-></code></dfn> {
@@ -1156,13 +1156,13 @@ <h3 class="heading settled" data-level="2.2" id="observable-api"><span class="se
   //   - AsyncIterable
   //   - Iterable
   //   - Promise
-  <c- b>static</c-> <a data-link-type="idl-name" href="#observable" id="ref-for-observable①"><c- n>Observable</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="Observable" data-dfn-type="method" data-export data-lt="from(value)" id="dom-observable-from"><code><c- g>from</c-></code></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⓪"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/from(value)" data-dfn-type="argument" data-export id="dom-observable-from-value-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-observable-from-value-value"></a></dfn>);
+  <c- b>static</c-> <a data-link-type="idl-name" href="#observable" id="ref-for-observable①"><c- n>Observable</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="Observable" data-dfn-type="method" data-export data-lt="from(value)" id="dom-observable-from"><code><c- g>from</c-></code></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①①"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/from(value)" data-dfn-type="argument" data-export id="dom-observable-from-value-value"><code><c- g>value</c-></code><a class="self-link" href="#dom-observable-from-value-value"></a></dfn>);
 
   // Observable-returning operators. See "Operators" section in the spec.
   //
   // takeUntil() can consume promises, iterables, async iterables, and other
   // observables.
-  <a data-link-type="idl-name" href="#observable" id="ref-for-observable②"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-takeuntil" id="ref-for-dom-observable-takeuntil"><c- g>takeUntil</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①①"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/takeUntil(notifier)" data-dfn-type="argument" data-export id="dom-observable-takeuntil-notifier-notifier"><code><c- g>notifier</c-></code><a class="self-link" href="#dom-observable-takeuntil-notifier-notifier"></a></dfn>);
+  <a data-link-type="idl-name" href="#observable" id="ref-for-observable②"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-takeuntil" id="ref-for-dom-observable-takeuntil"><c- g>takeUntil</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①②"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/takeUntil(notifier)" data-dfn-type="argument" data-export id="dom-observable-takeuntil-notifier-notifier"><code><c- g>notifier</c-></code><a class="self-link" href="#dom-observable-takeuntil-notifier-notifier"></a></dfn>);
   <a data-link-type="idl-name" href="#observable" id="ref-for-observable③"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-map" id="ref-for-dom-observable-map"><c- g>map</c-></a>(<a data-link-type="idl-name" href="#callbackdef-mapper" id="ref-for-callbackdef-mapper"><c- n>Mapper</c-></a> <dfn class="idl-code" data-dfn-for="Observable/map(mapper)" data-dfn-type="argument" data-export id="dom-observable-map-mapper-mapper"><code><c- g>mapper</c-></code><a class="self-link" href="#dom-observable-map-mapper-mapper"></a></dfn>);
   <a data-link-type="idl-name" href="#observable" id="ref-for-observable④"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-filter" id="ref-for-dom-observable-filter"><c- g>filter</c-></a>(<a data-link-type="idl-name" href="#callbackdef-predicate" id="ref-for-callbackdef-predicate"><c- n>Predicate</c-></a> <dfn class="idl-code" data-dfn-for="Observable/filter(predicate)" data-dfn-type="argument" data-export id="dom-observable-filter-predicate-predicate"><code><c- g>predicate</c-></code><a class="self-link" href="#dom-observable-filter-predicate-predicate"></a></dfn>);
   <a data-link-type="idl-name" href="#observable" id="ref-for-observable⑤"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-take" id="ref-for-dom-observable-take"><c- g>take</c-></a>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long③"><c- b>unsigned</c-> <c- b>long</c-> <c- b>long</c-></a> <dfn class="idl-code" data-dfn-for="Observable/take(amount)" data-dfn-type="argument" data-export id="dom-observable-take-amount-amount"><code><c- g>amount</c-></code><a class="self-link" href="#dom-observable-take-amount-amount"></a></dfn>);
@@ -1172,14 +1172,14 @@ <h3 class="heading settled" data-level="2.2" id="observable-api"><span class="se
   <a data-link-type="idl-name" href="#observable" id="ref-for-observable⑨"><c- n>Observable</c-></a> <a class="idl-code" data-link-type="method" href="#dom-observable-finally" id="ref-for-dom-observable-finally"><c- g>finally</c-></a>(<a data-link-type="idl-name" href="https://webidl.spec.whatwg.org/#VoidFunction" id="ref-for-VoidFunction③"><c- n>VoidFunction</c-></a> <dfn class="idl-code" data-dfn-for="Observable/finally(callback)" data-dfn-type="argument" data-export id="dom-observable-finally-callback-callback"><code><c- g>callback</c-></code><a class="self-link" href="#dom-observable-finally-callback-callback"></a></dfn>);
 
   // Promise-returning operators.
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<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 class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①②"><c- b>any</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-observable-toarray" id="ref-for-dom-observable-toarray"><c- g>toArray</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/toArray(options), Observable/toArray()" data-dfn-type="argument" data-export id="dom-observable-toarray-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-toarray-options-options"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<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 class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①③"><c- b>any</c-></a>>> <a class="idl-code" data-link-type="method" href="#dom-observable-toarray" id="ref-for-dom-observable-toarray"><c- g>toArray</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/toArray(options), Observable/toArray()" data-dfn-type="argument" data-export id="dom-observable-toarray-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-toarray-options-options"></a></dfn> = {});
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-undefined" id="ref-for-idl-undefined⑧"><c- b>undefined</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-foreach" id="ref-for-dom-observable-foreach"><c- g>forEach</c-></a>(<a data-link-type="idl-name" href="#callbackdef-visitor" id="ref-for-callbackdef-visitor"><c- n>Visitor</c-></a> <dfn class="idl-code" data-dfn-for="Observable/forEach(callback, options), Observable/forEach(callback)" data-dfn-type="argument" data-export id="dom-observable-foreach-callback-options-callback"><code><c- g>callback</c-></code><a class="self-link" href="#dom-observable-foreach-callback-options-callback"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/forEach(callback, options), Observable/forEach(callback)" data-dfn-type="argument" data-export id="dom-observable-foreach-callback-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-foreach-callback-options-options"></a></dfn> = {});
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise②"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean②"><c- b>boolean</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-every" id="ref-for-dom-observable-every"><c- g>every</c-></a>(<a data-link-type="idl-name" href="#callbackdef-predicate" id="ref-for-callbackdef-predicate①"><c- n>Predicate</c-></a> <dfn class="idl-code" data-dfn-for="Observable/every(predicate, options), Observable/every(predicate)" data-dfn-type="argument" data-export id="dom-observable-every-predicate-options-predicate"><code><c- g>predicate</c-></code><a class="self-link" href="#dom-observable-every-predicate-options-predicate"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions③"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/every(predicate, options), Observable/every(predicate)" data-dfn-type="argument" data-export id="dom-observable-every-predicate-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-every-predicate-options-options"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise③"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①③"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-first" id="ref-for-dom-observable-first"><c- g>first</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions④"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/first(options), Observable/first()" data-dfn-type="argument" data-export id="dom-observable-first-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-first-options-options"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise④"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①④"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-last" id="ref-for-dom-observable-last"><c- g>last</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑤"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/last(options), Observable/last()" data-dfn-type="argument" data-export id="dom-observable-last-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-last-options-options"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑤"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑤"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-find" id="ref-for-dom-observable-find"><c- g>find</c-></a>(<a data-link-type="idl-name" href="#callbackdef-predicate" id="ref-for-callbackdef-predicate②"><c- n>Predicate</c-></a> <dfn class="idl-code" data-dfn-for="Observable/find(predicate, options), Observable/find(predicate)" data-dfn-type="argument" data-export id="dom-observable-find-predicate-options-predicate"><code><c- g>predicate</c-></code><a class="self-link" href="#dom-observable-find-predicate-options-predicate"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑥"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/find(predicate, options), Observable/find(predicate)" data-dfn-type="argument" data-export id="dom-observable-find-predicate-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-find-predicate-options-options"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise③"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①④"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-first" id="ref-for-dom-observable-first"><c- g>first</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions④"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/first(options), Observable/first()" data-dfn-type="argument" data-export id="dom-observable-first-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-first-options-options"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise④"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑤"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-last" id="ref-for-dom-observable-last"><c- g>last</c-></a>(<c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑤"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/last(options), Observable/last()" data-dfn-type="argument" data-export id="dom-observable-last-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-last-options-options"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑤"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑥"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-find" id="ref-for-dom-observable-find"><c- g>find</c-></a>(<a data-link-type="idl-name" href="#callbackdef-predicate" id="ref-for-callbackdef-predicate②"><c- n>Predicate</c-></a> <dfn class="idl-code" data-dfn-for="Observable/find(predicate, options), Observable/find(predicate)" data-dfn-type="argument" data-export id="dom-observable-find-predicate-options-predicate"><code><c- g>predicate</c-></code><a class="self-link" href="#dom-observable-find-predicate-options-predicate"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑥"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/find(predicate, options), Observable/find(predicate)" data-dfn-type="argument" data-export id="dom-observable-find-predicate-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-find-predicate-options-options"></a></dfn> = {});
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑥"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean③"><c- b>boolean</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-some" id="ref-for-dom-observable-some"><c- g>some</c-></a>(<a data-link-type="idl-name" href="#callbackdef-predicate" id="ref-for-callbackdef-predicate③"><c- n>Predicate</c-></a> <dfn class="idl-code" data-dfn-for="Observable/some(predicate, options), Observable/some(predicate)" data-dfn-type="argument" data-export id="dom-observable-some-predicate-options-predicate"><code><c- g>predicate</c-></code><a class="self-link" href="#dom-observable-some-predicate-options-predicate"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑦"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/some(predicate, options), Observable/some(predicate)" data-dfn-type="argument" data-export id="dom-observable-some-predicate-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-some-predicate-options-options"></a></dfn> = {});
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑦"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑥"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-reduce" id="ref-for-dom-observable-reduce"><c- g>reduce</c-></a>(<a data-link-type="idl-name" href="#callbackdef-reducer" id="ref-for-callbackdef-reducer"><c- n>Reducer</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-reducer"><code><c- g>reducer</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-reducer"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑦"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-initialvalue"><code><c- g>initialValue</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-initialvalue"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑧"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-options"></a></dfn> = {});
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise⑦"><c- b>Promise</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑦"><c- b>any</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-observable-reduce" id="ref-for-dom-observable-reduce"><c- g>reduce</c-></a>(<a data-link-type="idl-name" href="#callbackdef-reducer" id="ref-for-callbackdef-reducer"><c- n>Reducer</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-reducer"><code><c- g>reducer</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-reducer"></a></dfn>, <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑧"><c- b>any</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-initialvalue"><code><c- g>initialValue</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-initialvalue"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions⑧"><c- n>SubscribeOptions</c-></a> <dfn class="idl-code" data-dfn-for="Observable/reduce(reducer, initialValue, options), Observable/reduce(reducer, initialValue), Observable/reduce(reducer)" data-dfn-type="argument" data-export id="dom-observable-reduce-reducer-initialvalue-options-options"><code><c- g>options</c-></code><a class="self-link" href="#dom-observable-reduce-reducer-initialvalue-options-options"></a></dfn> = {});
 };
 </pre>
    <p>Each <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable①⓪">Observable</a></code> has a <dfn class="dfn-paneled" data-dfn-for="Observable" data-dfn-type="dfn" data-noexport id="observable-subscribe-callback">subscribe callback</dfn>, which is a <code class="idl"><a data-link-type="idl" href="#callbackdef-subscribecallback" id="ref-for-callbackdef-subscribecallback①">SubscribeCallback</a></code> or a set of steps that take in a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber①⓪">Subscriber</a></code>.</p>
@@ -1206,7 +1206,7 @@ <h3 class="heading settled" data-level="2.2" id="observable-api"><span class="se
    </div>
    <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concepts"><span class="secno">2.2.1. </span><span class="content">Supporting concepts</span><a class="self-link" href="#observable-supporting-concepts"></a></h4>
    <div class="algorithm" data-algorithm="default error algorithm">
-     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="default-error-algorithm">default error algorithm</dfn> is an algorithm that takes an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑧">any</a></code> <var>error</var>, and runs
+     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="default-error-algorithm">default error algorithm</dfn> is an algorithm that takes an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑨">any</a></code> <var>error</var>, and runs
   these steps: 
     <ol>
      <li data-md>
@@ -1220,10 +1220,10 @@ <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concept
    <dl>
     <dt data-md><dfn class="dfn-paneled" data-dfn-for="internal observer" data-dfn-type="dfn" data-noexport id="internal-observer-next-steps">next steps</dfn>
     <dd data-md>
-     <p>An algorithm that takes a single parameter of type <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any①⑨">any</a></code>. Initially, these steps do nothing.</p>
+     <p>An algorithm that takes a single parameter of type <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⓪">any</a></code>. Initially, these steps do nothing.</p>
     <dt data-md><dfn class="dfn-paneled" data-dfn-for="internal observer" data-dfn-type="dfn" data-noexport id="internal-observer-error-steps">error steps</dfn>
     <dd data-md>
-     <p>An algorithm that takes a single parameter of type <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⓪">any</a></code>. Initially, the <a data-link-type="dfn" href="#default-error-algorithm" id="ref-for-default-error-algorithm">default error
+     <p>An algorithm that takes a single parameter of type <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②①">any</a></code>. Initially, the <a data-link-type="dfn" href="#default-error-algorithm" id="ref-for-default-error-algorithm">default error
  algorithm</a>.</p>
     <dt data-md><dfn class="dfn-paneled" data-dfn-for="internal observer" data-dfn-type="dfn" data-noexport id="internal-observer-complete-steps">complete steps</dfn>
     <dd data-md>
@@ -1257,7 +1257,7 @@ <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concept
          <dt>If <var>observer</var> is an <code class="idl"><a data-link-type="idl" href="#callbackdef-observablesubscriptioncallback" id="ref-for-callbackdef-observablesubscriptioncallback③">ObservableSubscriptionCallback</a></code>
          <dd>
           Set <var>internal observer</var>’s <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps①">next steps</a> to these steps that take
-           an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②①">any</a></code> <var>value</var>: 
+           an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②②">any</a></code> <var>value</var>: 
           <ol>
            <li data-md>
             <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#invoke-a-callback-function" id="ref-for-invoke-a-callback-function③">Invoke</a> <var>observer</var> with <var>value</var>.</p>
@@ -1268,7 +1268,7 @@ <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concept
          <dd>
           <ol>
            <li data-md>
-            <p>If <var>observer</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriptionobserver-next" id="ref-for-dom-subscriptionobserver-next②">next</a></code> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists">exists</a>, then set <var>internal observer</var>’s <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps②">next steps</a> to these steps that take an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②②">any</a></code> <var>value</var>:</p>
+            <p>If <var>observer</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriptionobserver-next" id="ref-for-dom-subscriptionobserver-next②">next</a></code> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists">exists</a>, then set <var>internal observer</var>’s <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps②">next steps</a> to these steps that take an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②③">any</a></code> <var>value</var>:</p>
             <ol>
              <li data-md>
               <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#invoke-a-callback-function" id="ref-for-invoke-a-callback-function④">Invoke</a> <var>observer</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriptionobserver-next" id="ref-for-dom-subscriptionobserver-next③">next</a></code> with <var>value</var>.</p>
@@ -1277,7 +1277,7 @@ <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concept
             </ol>
            <li data-md>
             <p>If <var>observer</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriptionobserver-error" id="ref-for-dom-subscriptionobserver-error②">error</a></code> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists①">exists</a>, then set <var>internal observer</var>’s <a data-link-type="dfn" href="#internal-observer-error-steps" id="ref-for-internal-observer-error-steps①">error steps</a> to these steps that take
-  an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②③">any</a></code> <var>error</var>:</p>
+  an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②④">any</a></code> <var>error</var>:</p>
             <ol>
              <li data-md>
               <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#invoke-a-callback-function" id="ref-for-invoke-a-callback-function⑤">Invoke</a> <var>observer</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriptionobserver-error" id="ref-for-dom-subscriptionobserver-error③">error</a></code> with <var>error</var>.</p>
@@ -1317,12 +1317,12 @@ <h4 class="heading settled" data-level="2.2.1" id="observable-supporting-concept
       <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal">signal</a></code> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-exists" id="ref-for-map-exists③">exists</a>, then:</p>
       <ol>
        <li data-md>
-        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted">aborted</a>, then <a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription③">close</a> <var>subscriber</var>.</p>
+        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted">aborted</a>, then <a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription③">close</a> <var>subscriber</var> given <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②">signal</a></code> <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason">abort reason</a>.</p>
        <li data-md>
-        <p>Otherwise, <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add">add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②">signal</a></code>:</p>
+        <p>Otherwise, <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add">add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③">signal</a></code>:</p>
         <ol>
          <li data-md>
-          <p><a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription④">Close</a> <var>subscriber</var>.</p>
+          <p><a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription④">Close</a> <var>subscriber</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④">signal</a></code> <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①">abort reason</a>.</p>
         </ol>
       </ol>
      <li data-md>
@@ -1389,7 +1389,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
   with the <var>observable</var> returned from this method. Rather, the <var>observable</var> will continue to
   mirror <var>sourceObservable</var> uninterrupted.</p>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⓪">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller③">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal②">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⓪">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller③">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal②">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable⑤">Subscribe</a> to <var>notifier</var> given <var>notifierObserver</var> and <var>options</var>.</p>
        <li data-md>
@@ -1460,7 +1460,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           <p>Run <var>subscriber</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriber-complete" id="ref-for-dom-subscriber-complete⑥">complete()</a></code> method.</p>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①①">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller④">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal③">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①①">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑥">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller④">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal③">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable⑦">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1511,7 +1511,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           <p>Run <var>subscriber</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriber-complete" id="ref-for-dom-subscriber-complete⑦">complete()</a></code> method.</p>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①②">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑤">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal④">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①②">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑦">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑤">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal④">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable⑧">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1560,7 +1560,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           <p>Run <var>subscriber</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriber-complete" id="ref-for-dom-subscriber-complete①⓪">complete()</a></code> method.</p>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①③">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑥">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑥">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑤">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①③">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑧">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑥">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑤">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable⑨">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1606,7 +1606,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           <p>Run <var>subscriber</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscriber-complete" id="ref-for-dom-subscriber-complete①①">complete()</a></code> method.</p>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①④">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑦">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑦">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑥">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①④">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑨">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑦">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑥">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①⓪">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1634,7 +1634,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
        <li data-md>
         <p>Let <var>outerSubscriptionHasCompleted</var> to a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean">boolean</a>, initially false.</p>
        <li data-md>
-        <p>Let <var>queue</var> be a new <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list①">list</a> of <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②④">any</a></code> values, initially empty.</p>
+        <p>Let <var>queue</var> be a new <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list①">list</a> of <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑤">any</a></code> values, initially empty.</p>
         <p class="note" role="note"><span class="marker">Note:</span> This <var>queue</var> is used to store any <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable②⑧">Observable</a></code>s emitted by <var>sourceObservable</var>,
   while <var>observable</var> is currently subscribed to an <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable②⑨">Observable</a></code> emitted earlier by <var>sourceObservable</var> that has not yet been exhausted.</p>
        <li data-md>
@@ -1664,7 +1664,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
                <p>Note: This <a data-link-type="dfn" href="#flatmap-process-next-value-steps" id="ref-for-flatmap-process-next-value-steps①">flatmap process next value steps</a> will subscribe to the <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable③①">Observable</a></code> derived from <var>value</var> (if one such can be derived) and keep
    processing values from it until its subscription becomes inactive (either by
    error or completion). If this "inner" <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable③②">Observable</a></code> completes, then the
-   processing steps will recursively invoke themselves with the next <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑤">any</a></code> in <var>queue</var>.</p>
+   processing steps will recursively invoke themselves with the next <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑥">any</a></code> in <var>queue</var>.</p>
                <p>If no such value <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain">exists</a>, then the processing steps will terminate, <b>unsetting</b> <var>activeInnerSubscription</var>, so that future values emitted from <var>sourceObservable</var> are processed correctly.</p>
               </div>
             </ol>
@@ -1685,7 +1685,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           </ol>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑤">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑧">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑧">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑦">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑤">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⓪">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑧">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑦">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①①">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1694,7 +1694,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
     </ol>
    </div>
    <div class="algorithm" data-algorithm="flatmap process next value steps">
-     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="flatmap-process-next-value-steps">flatmap process next value steps</dfn>, given an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑥">any</a></code> <var>value</var>, a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber①⑧">Subscriber</a></code> <var>subscriber</var>, a <code class="idl"><a data-link-type="idl" href="#callbackdef-mapper" id="ref-for-callbackdef-mapper③">Mapper</a></code> <var>mapper</var>, and <b>references</b> to all of the following: a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list②">list</a> of <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑦">any</a></code> values <var>queue</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean②">boolean</a> <var>activeInnerSubscription</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean③">boolean</a> <var>outerSubscriptionHasCompleted</var>, and an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long⑧">unsigned long long</a></code> <var>idx</var>: 
+     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="flatmap-process-next-value-steps">flatmap process next value steps</dfn>, given an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑦">any</a></code> <var>value</var>, a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber①⑧">Subscriber</a></code> <var>subscriber</var>, a <code class="idl"><a data-link-type="idl" href="#callbackdef-mapper" id="ref-for-callbackdef-mapper③">Mapper</a></code> <var>mapper</var>, and <b>references</b> to all of the following: a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list②">list</a> of <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑧">any</a></code> values <var>queue</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean②">boolean</a> <var>activeInnerSubscription</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean③">boolean</a> <var>outerSubscriptionHasCompleted</var>, and an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long⑧">unsigned long long</a></code> <var>idx</var>: 
     <ol>
      <li data-md>
       <p>Let <var>mappedResult</var> be the result of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#invoke-a-callback-function" id="ref-for-invoke-a-callback-function①①">invoking</a> <var>mapper</var> with <var>value</var> and <var>idx</var>.</p>
@@ -1745,7 +1745,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
         </ol>
       </dl>
      <li data-md>
-      <p>Let <var>innerOptions</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑥">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑨">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑨">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑧">signal</a>.</p>
+      <p>Let <var>innerOptions</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑥">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①①">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller⑨">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑧">signal</a>.</p>
      <li data-md>
       <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①②">Subscribe</a> to <var>innerObservable</var> given <var>innerObserver</var> and <var>innerOptions</var>.</p>
     </ol>
@@ -1812,7 +1812,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
           </ol>
         </dl>
        <li data-md>
-        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑦">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⓪">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller①⓪">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑨">signal</a>.</p>
+        <p>Let <var>options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑦">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①②">signal</a></code> is <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller①⓪">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal⑨">signal</a>.</p>
        <li data-md>
         <p><a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①③">Subscribe</a> to <var>sourceObservable</var> given <var>sourceObserver</var> and <var>options</var>.</p>
       </ol>
@@ -1821,7 +1821,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
     </ol>
    </div>
    <div class="algorithm" data-algorithm="switchmap process next value steps">
-     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="switchmap-process-next-value-steps">switchmap process next value steps</dfn>, given an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑧">any</a></code> <var>value</var>, a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber②⓪">Subscriber</a></code> <var>subscriber</var>, a <code class="idl"><a data-link-type="idl" href="#callbackdef-mapper" id="ref-for-callbackdef-mapper④">Mapper</a></code> <var>mapper</var>, and <b>references</b> to all of the following: an <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑤">AbortController</a></code> <var>activeInnerAbortController</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean⑤">boolean</a> <var>outerSubscriptionHasCompleted</var>, and an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①⓪">unsigned long long</a></code> <var>idx</var> are to run these steps: 
+     The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="switchmap-process-next-value-steps">switchmap process next value steps</dfn>, given an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑨">any</a></code> <var>value</var>, a <code class="idl"><a data-link-type="idl" href="#subscriber" id="ref-for-subscriber②⓪">Subscriber</a></code> <var>subscriber</var>, a <code class="idl"><a data-link-type="idl" href="#callbackdef-mapper" id="ref-for-callbackdef-mapper④">Mapper</a></code> <var>mapper</var>, and <b>references</b> to all of the following: an <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑤">AbortController</a></code> <var>activeInnerAbortController</var>, a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean⑤">boolean</a> <var>outerSubscriptionHasCompleted</var>, and an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-unsigned-long-long" id="ref-for-idl-unsigned-long-long①⓪">unsigned long long</a></code> <var>idx</var> are to run these steps: 
     <ol>
      <li data-md>
       <p>Let <var>mappedResult</var> be the result of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#invoke-a-callback-function" id="ref-for-invoke-a-callback-function①②">invoking</a> <var>mapper</var> with <var>value</var> and <var>idx</var>.</p>
@@ -1856,7 +1856,7 @@ <h4 class="heading settled" data-level="2.3.2" id="observable-returning-operator
         </ol>
       </dl>
      <li data-md>
-      <p>Let <var>innerOptions</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑧">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①①">signal</a></code> is the
+      <p>Let <var>innerOptions</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑧">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①③">signal</a></code> is the
   result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal">creating a dependent abort signal</a> from the list
   «<var>activeInnerAbortController</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①⓪">signal</a>, <var>subscriber</var>’s <a data-link-type="dfn" href="#subscriber-subscription-controller" id="ref-for-subscriber-subscription-controller①①">subscription controller</a>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①①">signal</a>», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal②">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm">current realm</a>.</p>
      <li data-md>
@@ -1877,25 +1877,25 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>p</var> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a>.</p>
      <li data-md>
-      <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①②">signal</a></code> is not null:</p>
+      <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①④">signal</a></code> is not null:</p>
       <ol>
        <li data-md>
-        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①③">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted①">aborted</a>, then:</p>
+        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑤">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted①">aborted</a>, then:</p>
         <ol>
          <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①④">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason">abort
+          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑥">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason②">abort
  reason</a>.</p>
          <li data-md>
           <p>Return <var>p</var>.</p>
         </ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add①">Add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑤">signal</a></code>:</p>
+        <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add①">Add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑦">signal</a></code>:</p>
         <ol>
          <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑥">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①">abort
+          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑧">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason③">abort
  reason</a>.</p>
         </ol>
-        <p class="note" role="note"><span class="marker">Note:</span> All we have to do here is <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②">reject</a> <var>p</var>. Note that the subscription to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②⑧">this</a> <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable④①">Observable</a></code> will also be closed automatically, since the "inner" Subscriber gets <a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription⑤">closed</a> in response to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑦">signal</a></code> getting <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-signal-abort" id="ref-for-abortsignal-signal-abort②">signal abort</a>.</p>
+        <p class="note" role="note"><span class="marker">Note:</span> All we have to do here is <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②">reject</a> <var>p</var>. Note that the subscription to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②⑧">this</a> <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable④①">Observable</a></code> will also be closed automatically, since the "inner" Subscriber gets <a data-link-type="dfn" href="#close-a-subscription" id="ref-for-close-a-subscription⑤">closed</a> in response to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑨">signal</a></code> getting <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-signal-abort" id="ref-for-abortsignal-signal-abort②">signal abort</a>.</p>
       </ol>
      <li data-md>
       <p>Let <var>values</var> be a new <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list③">list</a>.</p>
@@ -1932,9 +1932,9 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>visitor callback controller</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new⑨">new</a> <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑥">AbortController</a></code>.</p>
      <li data-md>
-      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑨">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑧">signal</a></code> is the
+      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions①⑨">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⓪">signal</a></code> is the
  result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal①">creating a dependent abort signal</a> from the list
- «<var>visitor callback controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①②">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal①⑨">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal③">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm①">current realm</a>.</p>
+ «<var>visitor callback controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①②">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②①">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal③">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm①">current realm</a>.</p>
       <div class="note" role="note">
        <p>Many trivial <a data-link-type="dfn" href="#internal-observer" id="ref-for-internal-observer①⑤">internal observers</a> act as pass-throughs, and do not control the
    subscription to the <code class="idl"><a data-link-type="idl" href="#observable" id="ref-for-observable④②">Observable</a></code> that they represent; that is, their <a data-link-type="dfn" href="#internal-observer-error-steps" id="ref-for-internal-observer-error-steps①⑤">error steps</a> and <a data-link-type="dfn" href="#internal-observer-complete-steps" id="ref-for-internal-observer-complete-steps①④">complete steps</a> are called when the
@@ -1942,25 +1942,25 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
    version of the given value along the chain.</p>
        <p>For this operator, however, the below <var>observer</var>’s <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps①⑥">next steps</a> are
    responsible for actually aborting the underlying subscription to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this③⓪">this</a>, in the event
-   that <var>callback</var> throws an exception. In that case, the <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②⓪">SubscribeOptions</a></code>'s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⓪">signal</a></code> we pass through to "<a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①⑥">Subscribe to an <code>Observable</code></a>", needs to be a <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal②">dependent signal</a> derived from <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②①">signal</a></code>, <strong>and</strong> the <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal④">AbortSignal</a></code> of an <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑦">AbortController</a></code> that the <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps①⑦">next steps</a> below has access to, and can <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal-abort" id="ref-for-abortcontroller-signal-abort①">signal
+   that <var>callback</var> throws an exception. In that case, the <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②⓪">SubscribeOptions</a></code>'s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②②">signal</a></code> we pass through to "<a data-link-type="dfn" href="#observable-subscribe-to-an-observable" id="ref-for-observable-subscribe-to-an-observable①⑥">Subscribe to an <code>Observable</code></a>", needs to be a <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal②">dependent signal</a> derived from <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②③">signal</a></code>, <strong>and</strong> the <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal④">AbortSignal</a></code> of an <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑦">AbortController</a></code> that the <a data-link-type="dfn" href="#internal-observer-next-steps" id="ref-for-internal-observer-next-steps①⑦">next steps</a> below has access to, and can <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal-abort" id="ref-for-abortcontroller-signal-abort①">signal
    abort</a> when needed. </p>
       </div>
      <li data-md>
-      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②②">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted②">aborted</a>, then:</p>
+      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②④">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted②">aborted</a>, then:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject④">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②③">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason②">abort reason</a>.</p>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject④">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑤">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason④">abort reason</a>.</p>
        <li data-md>
         <p>Return <var>p</var>.</p>
       </ol>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add②">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②④">signal</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add②">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑥">signal</a></code>:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑤">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑤">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason③">abort
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑤">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑦">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑤">abort
   reason</a>.</p>
-        <p class="note" role="note"><span class="marker">Note:</span> The fact that rejection of <var>p</var> is tied to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑥">signal</a></code>, and not <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑦">signal</a></code> means, that
-  any <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#microtask" id="ref-for-microtask">microtasks</a> <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-microtask" id="ref-for-queue-a-microtask">queued</a> during the firing of <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑧">signal</a></code>'s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#eventdef-abortsignal-abort" id="ref-for-eventdef-abortsignal-abort">abort</a></code> event will run before <var>p</var>’s
+        <p class="note" role="note"><span class="marker">Note:</span> The fact that rejection of <var>p</var> is tied to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑧">signal</a></code>, and not <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑨">signal</a></code> means, that
+  any <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#microtask" id="ref-for-microtask">microtasks</a> <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-microtask" id="ref-for-queue-a-microtask">queued</a> during the firing of <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⓪">signal</a></code>'s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#eventdef-abortsignal-abort" id="ref-for-eventdef-abortsignal-abort">abort</a></code> event will run before <var>p</var>’s
   rejection handler runs.</p>
       </ol>
      <li data-md>
@@ -2005,22 +2005,22 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>controller</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new①⓪">new</a> <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑧">AbortController</a></code>.</p>
      <li data-md>
-      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②①">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal②⑨">signal</a></code> is the
+      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②①">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③①">signal</a></code> is the
  result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal③">creating a dependent abort signal</a> from the list
- «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①③">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⓪">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑤">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm②">current realm</a>.</p>
+ «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①③">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③②">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑤">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm②">current realm</a>.</p>
      <li data-md>
-      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③①">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted③">aborted</a>, then:</p>
+      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③③">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted③">aborted</a>, then:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑧">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③②">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason④">abort reason</a>.</p>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑧">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③④">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑥">abort reason</a>.</p>
        <li data-md>
         <p>Return <var>p</var>.</p>
       </ol>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add③">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③③">signal</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add③">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑤">signal</a></code>:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑨">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③④">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑤">abort
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject⑨">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑥">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑦">abort
   reason</a>.</p>
       </ol>
      <li data-md>
@@ -2061,21 +2061,21 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>controller</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new①①">new</a> <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller⑨">AbortController</a></code>.</p>
      <li data-md>
-      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②②">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑤">signal</a></code> is the
- result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal④">creating a dependent abort signal</a> from the list «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①④">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑥">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑥">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm③">current realm</a>.</p>
+      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②②">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑦">signal</a></code> is the
+ result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal④">creating a dependent abort signal</a> from the list «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①④">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑧">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑥">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm③">current realm</a>.</p>
      <li data-md>
-      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑦">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted④">aborted</a>, then:</p>
+      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑨">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted④">aborted</a>, then:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①②">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑧">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑥">abort reason</a>.</p>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①②">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⓪">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑧">abort reason</a>.</p>
        <li data-md>
         <p>Return <var>p</var>.</p>
       </ol>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add④">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal③⑨">signal</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add④">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④①">signal</a></code>:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①③">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⓪">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑦">abort
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①③">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④②">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑨">abort
   reason</a>.</p>
       </ol>
      <li data-md>
@@ -2114,27 +2114,27 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>p</var> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise④">a new promise</a>.</p>
      <li data-md>
-      <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④①">signal</a></code> is not null:</p>
+      <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④③">signal</a></code> is not null:</p>
       <ol>
        <li data-md>
-        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④②">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑤">aborted</a>, then:</p>
+        <p>If <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④④">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑤">aborted</a>, then:</p>
         <ol>
          <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑤">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④③">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑧">abort
+          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑤">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑤">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①⓪">abort
  reason</a>.</p>
          <li data-md>
           <p>Return <var>p</var>.</p>
         </ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑤">Add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④④">signal</a></code>:</p>
+        <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑤">Add the following abort algorithm</a> to <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑥">signal</a></code>:</p>
         <ol>
          <li data-md>
-          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑥">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑤">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason⑨">abort
+          <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑥">Reject</a> <var>p</var> with <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑦">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①①">abort
  reason</a>.</p>
         </ol>
       </ol>
      <li data-md>
-      <p>Let <var>lastValue</var> be an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any②⑨">any</a></code>-or-null, initially null.</p>
+      <p>Let <var>lastValue</var> be an <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-any" id="ref-for-idl-any③⓪">any</a></code>-or-null, initially null.</p>
      <li data-md>
       <p>Let <var>hasLastValue</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#boolean" id="ref-for-boolean⑥">boolean</a>, initially false.</p>
      <li data-md>
@@ -2177,22 +2177,22 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>controller</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new①②">new</a> <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller①⓪">AbortController</a></code>.</p>
      <li data-md>
-      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②③">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑥">signal</a></code> is the
+      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②③">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑧">signal</a></code> is the
  result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal⑤">creating a dependent abort signal</a> from the list
- «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①⑤">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑦">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑦">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm④">current realm</a>.</p>
+ «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①⑤">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑨">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑦">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm④">current realm</a>.</p>
      <li data-md>
-      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑧">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑥">aborted</a>, then:</p>
+      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⓪">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑥">aborted</a>, then:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑧">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal④⑨">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①⓪">abort reason</a>.</p>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑧">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤①">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①②">abort reason</a>.</p>
        <li data-md>
         <p>Return <var>p</var>.</p>
       </ol>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑥">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⓪">signal</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑥">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤②">signal</a></code>:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑨">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤①">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①①">abort
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject①⑨">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤③">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①③">abort
   reason</a>.</p>
       </ol>
      <li data-md>
@@ -2234,22 +2234,22 @@ <h4 class="heading settled" data-level="2.3.3" id="promise-returning-operators">
      <li data-md>
       <p>Let <var>controller</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#new" id="ref-for-new①③">new</a> <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortcontroller" id="ref-for-abortcontroller①①">AbortController</a></code>.</p>
      <li data-md>
-      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②④">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤②">signal</a></code> is the
+      <p>Let <var>internal options</var> be a new <code class="idl"><a data-link-type="idl" href="#dictdef-subscribeoptions" id="ref-for-dictdef-subscribeoptions②④">SubscribeOptions</a></code> whose <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤④">signal</a></code> is the
  result of <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#create-a-dependent-abort-signal" id="ref-for-create-a-dependent-abort-signal⑥">creating a dependent abort signal</a> from the list
- «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①⑥">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤③">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑧">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm⑤">current realm</a>.</p>
+ «<var>controller</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortcontroller-signal" id="ref-for-abortcontroller-signal①⑥">signal</a>, <var>options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑤">signal</a></code> if non-null», using <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#abortsignal" id="ref-for-abortsignal⑧">AbortSignal</a></code>, and the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm⑤">current realm</a>.</p>
      <li data-md>
-      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤④">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑦">aborted</a>, then:</p>
+      <p>If <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑥">signal</a></code> is <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-aborted" id="ref-for-abortsignal-aborted⑦">aborted</a>, then:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②②">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑤">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①②">abort reason</a>.</p>
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②②">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑦">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①④">abort reason</a>.</p>
        <li data-md>
         <p>Return <var>p</var>.</p>
       </ol>
      <li data-md>
-      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑦">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑥">signal</a></code>:</p>
+      <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-add" id="ref-for-abortsignal-add⑦">Add the following abort algorithm</a> to <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑧">signal</a></code>:</p>
       <ol>
        <li data-md>
-        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②③">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑦">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①③">abort
+        <p><a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject②③">Reject</a> <var>p</var> with <var>internal options</var>’s <code class="idl"><a data-link-type="idl" href="#dom-subscribeoptions-signal" id="ref-for-dom-subscribeoptions-signal⑤⑨">signal</a></code>'s <a data-link-type="dfn" href="https://dom.spec.whatwg.org#abortsignal-abort-reason" id="ref-for-abortsignal-abort-reason①⑤">abort
   reason</a>.</p>
       </ol>
      <li data-md>
@@ -2478,7 +2478,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="d30f4c38">EventListener</span>
      <li><span class="dfn-paneled" id="2bc0cdf4">EventTarget</span>
      <li><span class="dfn-paneled" id="711357e0">abort</span>
-     <li><span class="dfn-paneled" id="28e64574">abort reason</span>
+     <li><span class="dfn-paneled" id="670f0339">abort reason</span>
      <li><span class="dfn-paneled" id="535dd335">aborted</span>
      <li><span class="dfn-paneled" id="87bc23a5">add</span>
      <li><span class="dfn-paneled" id="f99bafb9">add an event listener</span>
@@ -2648,7 +2648,6 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 </pre>
   <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content">Issues Index</span><a class="self-link" href="#issues-index"></a></h2>
   <div style="counter-reset:issue">
-   <div class="issue"> Abort with an appropriate abort reason. <a class="issue-return" href="#issue-cedd8971" title="Jump to section">↵</a></div>
    <div class="issue"> We shouldn’t invoke <code class="idl"><a data-link-type="idl" href="#dom-observable-from">from()</a></code> directly. Rather, we should
  call some internal algorithm that passes-back the exceptions for us to handle
  properly here, since we want to pipe them to <var>subscriber</var>. <a class="issue-return" href="#issue-4eb2abb1" title="Jump to section">↵</a></div>
@@ -2968,7 +2967,7 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
 window.dfnpanelData['d30f4c38'] = {"dfnID": "d30f4c38", "url": "https://dom.spec.whatwg.org/#callbackdef-eventlistener", "dfnText": "EventListener", "refSections": [{"refs": [{"id": "ref-for-callbackdef-eventlistener"}], "title": "3. EventTarget integration"}], "external": true};
 window.dfnpanelData['2bc0cdf4'] = {"dfnID": "2bc0cdf4", "url": "https://dom.spec.whatwg.org/#eventtarget", "dfnText": "EventTarget", "refSections": [{"refs": [{"id": "ref-for-eventtarget"}, {"id": "ref-for-eventtarget\u2460"}], "title": "3. EventTarget integration"}], "external": true};
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