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+++ b/act-rules-format.html
@@ -8,7 +8,7 @@
   <meta content="Bikeshed version 82ce88815, updated Thu Sep 7 16:33:55 2023 -0700" name="generator">
   <link href="https://w3c.github.io/wcag-act/act-rules-format.html" rel="canonical">
   <link href="https://www.w3.org/2008/site/images/favicon.ico" rel="icon">
-  <meta content="8ea041a8a6460a928d56f848f32ffb2a74b9c5de" name="document-revision">
+  <meta content="ad8322c23814fea56cf5a41783e3d8308a426845" name="document-revision">
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@@ -693,21 +693,29 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
         <li><a href="#expectations-atomic"><span class="secno">4.7.1</span> <span class="content">Expectations for Atomic Rules</span></a>
         <li><a href="#expectations-composite"><span class="secno">4.7.2</span> <span class="content">Expectations for Composite Rules</span></a>
        </ol>
-      <li><a href="#assumptions"><span class="secno">4.8</span> <span class="content">Assumptions</span></a>
-      <li><a href="#accessibility-support"><span class="secno">4.9</span> <span class="content">Accessibility Support</span></a>
-      <li><a href="#test-cases"><span class="secno">4.10</span> <span class="content">Test Cases</span></a>
-      <li><a href="#change-log"><span class="secno">4.11</span> <span class="content">Change Log</span></a>
-      <li><a href="#glossary"><span class="secno">4.12</span> <span class="content">Glossary</span></a>
-      <li><a href="#issues-list"><span class="secno">4.13</span> <span class="content">Issues List (optional)</span></a>
-      <li><a href="#background"><span class="secno">4.14</span> <span class="content">Background (optional)</span></a>
       <li>
-       <a href="#implementations"><span class="secno">4.15</span> <span class="content">Implementations (optional)</span></a>
+       <a href="#background"><span class="secno">4.8</span> <span class="content">Background</span></a>
        <ol class="toc">
-        <li><a href="#impl-consistency"><span class="secno">4.15.1</span> <span class="content">Consistency</span></a>
-        <li><a href="#impl-partial-consistency"><span class="secno">4.15.2</span> <span class="content">Partial Consistency</span></a>
-        <li><a href="#impl-multi-check"><span class="secno">4.15.3</span> <span class="content">Consistency with multiple checks</span></a>
+        <li>
+         <a href="#assumptions"><span class="secno">4.8.1</span> <span class="content">Assumptions</span></a>
+         <ol class="toc">
+          <li><a href="#accessibility-support"><span class="secno">4.8.1.1</span> <span class="content">Accessibility Support</span></a>
+          <li><a href="#related-rules"><span class="secno">4.8.1.2</span> <span class="content">Related Rules (optional)</span></a>
+          <li><a href="#other-resources"><span class="secno">4.8.1.3</span> <span class="content">Other Resources (optional)</span></a>
+         </ol>
+       </ol>
+      <li><a href="#test-cases"><span class="secno">4.9</span> <span class="content">Test Cases</span></a>
+      <li><a href="#rule-versions"><span class="secno">4.10</span> <span class="content">Rule Versions</span></a>
+      <li><a href="#glossary"><span class="secno">4.11</span> <span class="content">Glossary</span></a>
+      <li><a href="#issues-list"><span class="secno">4.12</span> <span class="content">Issues List (optional)</span></a>
+      <li>
+       <a href="#implementations"><span class="secno">4.13</span> <span class="content">Implementations (optional)</span></a>
+       <ol class="toc">
+        <li><a href="#impl-consistency"><span class="secno">4.13.1</span> <span class="content">Consistency</span></a>
+        <li><a href="#impl-partial-consistency"><span class="secno">4.13.2</span> <span class="content">Partial Consistency</span></a>
+        <li><a href="#impl-multi-check"><span class="secno">4.13.3</span> <span class="content">Consistency with multiple checks</span></a>
        </ol>
-      <li><a href="#acknowledgments"><span class="secno">4.16</span> <span class="content">Acknowledgments (optional)</span></a>
+      <li><a href="#acknowledgments"><span class="secno">4.14</span> <span class="content">Acknowledgments (optional)</span></a>
      </ol>
     <li><a href="#rule-accuracy"><span class="secno">5</span> <span class="content">Rule Accuracy</span></a>
     <li><a href="#harmonization"><span class="secno">6</span> <span class="content">Harmonization</span></a>
@@ -798,22 +806,32 @@ <h2 class="heading settled" data-level="4" id="act-rule-structure"><span class="
     <li data-md>
      <p><a href="#expectations">Expectations</a></p>
     <li data-md>
-     <p><a href="#assumptions">Assumptions</a></p>
-    <li data-md>
-     <p><a href="#accessibility-support">Accessibility Support</a></p>
+     <p>[Background] (#background)</p>
+     <ul>
+      <li data-md>
+       <p><a href="#assumptions">Assumptions</a></p>
+      <li data-md>
+       <p><a href="#accessibility-support">Accessibility Support</a></p>
+      <li data-md>
+       <p><a href="#related-rules">Related Rules (optional)</a></p>
+      <li data-md>
+       <p><a href="#other-resources">Other Resources (optional)</a></p>
+     </ul>
     <li data-md>
      <p><a href="#test-cases">Test Cases</a></p>
     <li data-md>
-     <p><a href="#change-log">Change Log</a></p>
+     <p><a href="#rule-versions">Rule Versions</a></p>
     <li data-md>
      <p><a href="#glossary">Glossary</a></p>
    </ul>
    <p>An ACT Rule MAY also contain:</p>
    <ul>
     <li data-md>
-     <p><a href="#issues-list">Issues List</a> (optional)</p>
+     <p><a href="related-rules">Related Rules</a> (optional) under Background</p>
     <li data-md>
-     <p><a href="#background">Background</a> (optional)</p>
+     <p><a href="other-resources">Other Resources</a> (optional) under Background</p>
+    <li data-md>
+     <p><a href="#issues-list">Issues List</a> (optional)</p>
     <li data-md>
      <p><a href="#implementations">Implementations</a> (optional)</p>
     <li data-md>
@@ -1191,11 +1209,13 @@ <h4 class="heading settled" data-level="4.7.2" id="expectations-composite"><span
      </ul>
     </blockquote>
    </aside>
-   <h3 class="heading settled" data-level="4.8" id="assumptions"><span class="secno">4.8. </span><span class="content">Assumptions</span><a class="self-link" href="#assumptions"></a></h3>
+   <h3 class="heading settled" data-level="4.8" id="background"><span class="secno">4.8. </span><span class="content">Background</span><a class="self-link" href="#background"></a></h3>
+   <p>An ACT Rule’s Background <em class="rfc2119">must</em> contain the Assumptions and Accessibility Support sections. Additional information <em class="rfc2119">may</em> be included about the development of the rule, or references to relevant reading in Other Resources, or Related Rules. Whenever a reference is included in the rule, the relationship to the relevant reading can be specified. Examples of relevant background references for a rule for a <a href="https://www.w3.org/WAI/standards-guidelines/wcag/">Web Content Accessibility Guidelines</a> <a data-link-type="biblio" href="#biblio-wcag" title="Web Content Accessibility Guidelines 1.0">[WCAG]</a> success criterion could be <a href="https://www.w3.org/WAI/WCAG21/Understanding/">WCAG 2.1 Understanding documents</a>, <a href="https://www.w3.org/WAI/WCAG21/Techniques/">WCAG 2.1 Techniques</a>, or <a href="https://www.w3.org/TR/wai-aria/">WAI-ARIA 1.1</a>, CSS <a data-link-type="biblio" href="#biblio-css-2018" title="CSS Snapshot 2018">[css-2018]</a>, or HTML <a data-link-type="biblio" href="#biblio-html" title="HTML Standard">[HTML]</a> specifications.</p>
+   <h4 class="heading settled" data-level="4.8.1" id="assumptions"><span class="secno">4.8.1. </span><span class="content">Assumptions</span><a class="self-link" href="#assumptions"></a></h4>
    <p>An ACT Rule <em class="rfc2119">must</em> list any known assumptions, limitations or any exceptions for the evaluation, the test environment, technologies being used or the subject being tested. For example, a rule that would partially test <a href="https://www.w3.org/WAI/WCAG21/quickref/#contrast-minimum">WCAG 2.1 success criterion 1.4.3 Contrast (Minimum)</a> based on the inspection of CSS properties could state that it is only applicable to HTML text content styleable with CSS, and that the rule does not support images of text.</p>
    <p>Sometimes there are multiple plausible ways that an accessibility requirement can be interpreted. For instance, it is not immediately obvious if emoji characters are "text" or "non-text content" in the <a href="https://www.w3.org/WAI/standards-guidelines/wcag/">Web Content Accessibility Guidelines</a> <a data-link-type="biblio" href="#biblio-wcag" title="Web Content Accessibility Guidelines 1.0">[WCAG]</a>. Whatever the interpretation is, this <em class="rfc2119">must</em> be documented in the rule.</p>
    <p>While the assumptions <em class="rfc2119">must</em> be included in the ACT Rule, it <em class="rfc2119">may</em> be empty when there are no known assumptions, limitations or exceptions.</p>
-   <h3 class="heading settled" data-level="4.9" id="accessibility-support"><span class="secno">4.9. </span><span class="content">Accessibility Support</span><a class="self-link" href="#accessibility-support"></a></h3>
+   <h5 class="heading settled" data-level="4.8.1.1" id="accessibility-support"><span class="secno">4.8.1.1. </span><span class="content">Accessibility Support</span><a class="self-link" href="#accessibility-support"></a></h5>
    <p>Content can be designed to rely on the support for particular accessibility features by different assistive technologies and user agents. For example, content using a particular <a href="https://www.w3.org/TR/wai-aria/">WAI-ARIA 1.1</a> feature relies on that feature to be supported by assistive technologies and user agents. This content would not work for assistive technologies and user agents that do not support WAI-ARIA. See the WCAG definition for <a href="https://www.w3.org/TR/WCAG21/#dfn-accessibility-supported">accessibility supported</a> use of a web technology.</p>
    <p>An ACT Rule <em class="rfc2119">must</em> include known limitations on accessibility support.</p>
    <aside class="example" id="example-9e5ab5bd">
@@ -1209,7 +1229,11 @@ <h3 class="heading settled" data-level="4.9" id="accessibility-support"><span cl
    <div class="note" role="note">
     <p><strong>Note:</strong> The Website Accessibility Conformance Evaluation Methodology (WCAG-EM) provides guidance on defining an <a href="https://www.w3.org/TR/WCAG-EM/#step1c">accessibility support baseline</a> for test scenarios, which can help users of ACT Rules to select the appropriate rules for their own circumstance.</p>
    </div>
-   <h3 class="heading settled" data-level="4.10" id="test-cases"><span class="secno">4.10. </span><span class="content">Test Cases</span><a class="self-link" href="#test-cases"></a></h3>
+   <h5 class="heading settled" data-level="4.8.1.2" id="related-rules"><span class="secno">4.8.1.2. </span><span class="content">Related Rules (optional)</span><a class="self-link" href="#related-rules"></a></h5>
+   <p>Related rules are other rules that test the same accessibility requirement. For example, two related rules of a composite rule can be the two atomic rules that contribute to its outcome. Similarly, each atomic rule in this example can list the other atomic rule and the composite rule as its related rules.</p>
+   <h5 class="heading settled" data-level="4.8.1.3" id="other-resources"><span class="secno">4.8.1.3. </span><span class="content">Other Resources (optional)</span><a class="self-link" href="#other-resources"></a></h5>
+   <p>Whenever a resource is included in the rule, the relationship to the relevant reading can be specified. Examples of relevant background references for a rule for a <a href="https://www.w3.org/WAI/standards-guidelines/wcag/">Web Content Accessibility Guidelines</a> <a data-link-type="biblio" href="#biblio-wcag" title="Web Content Accessibility Guidelines 1.0">[WCAG]</a> success criterion could be <a href="https://www.w3.org/WAI/WCAG21/Understanding/">WCAG 2.1 Understanding documents</a>, <a href="https://www.w3.org/WAI/WCAG21/Techniques/">WCAG 2.1 Techniques</a>, or <a href="https://www.w3.org/TR/wai-aria/">WAI-ARIA 1.1</a>, CSS <a data-link-type="biblio" href="#biblio-css-2018" title="CSS Snapshot 2018">[css-2018]</a>, or HTML <a data-link-type="biblio" href="#biblio-html" title="HTML Standard">[HTML]</a> specifications.</p>
+   <h3 class="heading settled" data-level="4.9" id="test-cases"><span class="secno">4.9. </span><span class="content">Test Cases</span><a class="self-link" href="#test-cases"></a></h3>
    <p>Test cases are (snippets of) content that can be used to validate the implementation of ACT Rules. Each rule <em class="rfc2119">must</em> have one or more test cases for <code>passed</code>, <code>failed</code>, and <code>inapplicable</code> <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①①">outcomes</a>. A test case consists of two pieces of data, a snippet of each <a href="#input-aspects">input aspect</a> for a rule, and the expected outcome for that rule. Test cases serve two functions, firstly as example scenarios for readers to understand when the outcome of a rule is <code>passed</code>, <code>failed</code>, or <code>inapplicable</code>. It also serves developers and users of accessibility testing tools and methodologies to validate that a rule is correctly implemented.</p>
    <p>Each<code>passed</code> and <code>inapplicable</code> test case of an ACT Rule <em class="rfc2119">must</em> satisfy all the rule’s <a data-link-type="dfn">conformance requirements</a>. For each <code>failed</code> test case, all conformance requirements <em class="rfc2119">must</em> be <em>not satisfied</em>.</p>
    <aside class="example" id="example-09b9695b">
@@ -1227,17 +1251,16 @@ <h3 class="heading settled" data-level="4.10" id="test-cases"><span class="secno
 </pre>
     </blockquote>
    </aside>
-   <h3 class="heading settled" data-level="4.11" id="change-log"><span class="secno">4.11. </span><span class="content">Change Log</span><a class="self-link" href="#change-log"></a></h3>
-   <p>It is important to keep track of changes to the ACT Rules so that users of the rules can understand if changes in test results are due to changes in the rules used when performing the tests, or from changes in the content itself. All changes to an ACT Rule that can change the <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①②">outcomes</a> of an evaluation <em class="rfc2119">must</em> be recorded in a change log. The change log can either be part of the rule document itself or be referenced from it.</p>
-   <h3 class="heading settled" data-level="4.12" id="glossary"><span class="secno">4.12. </span><span class="content">Glossary</span><a class="self-link" href="#glossary"></a></h3>
-   <p>ACT Rules <em class="rfc2119">must</em> have a glossary section. The glossary <em class="rfc2119">must</em> contain the <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①③">outcome</a> definition, as well as any definitions used in <a href="#applicability">applicability</a> and <a href="#expectations">expectations</a> sections in the rule. Since changes to the definition change the rule, those definitions cannot be maintained independently of the rule. If a shared glossary is used for rules, any definition changes <em class="rfc2119">must</em> be included in the <a href="#change-log">change log</a> of all rules that use that definition.</p>
-   <h3 class="heading settled" data-level="4.13" id="issues-list"><span class="secno">4.13. </span><span class="content">Issues List (optional)</span><a class="self-link" href="#issues-list"></a></h3>
-   <p>An ACT Rule <em class="rfc2119">may</em> include a list or a reference to a list of any known issues. The issues list would be used to record cases where an <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①④">outcome</a> of an ACT Rule was <code>failed</code> where it ought to have been <code>passed</code> or <code>inapplicable</code>, or vice versa. There are several reasons why this might occur. See <a href="#rule-accuracy">rule accuracy</a> for more information.</p>
+   <h3 class="heading settled" data-level="4.10" id="rule-versions"><span class="secno">4.10. </span><span class="content">Rule Versions</span><a class="self-link" href="#rule-versions"></a></h3>
+   <p>It is important to keep track of versions of ACT Rules so that users of the rules can understand if changes in test results are due to changes in the rules used when performing the tests, or from changes in the content itself. All previous versions of an ACT Rule <em class="rfc2119">must</em> be recorded either in the rule document or referenced from it.</p>
+   <p>This section was previously named "Change Log". Either section name is acceptable.</p>
+   <h3 class="heading settled" data-level="4.11" id="glossary"><span class="secno">4.11. </span><span class="content">Glossary</span><a class="self-link" href="#glossary"></a></h3>
+   <p>ACT Rules <em class="rfc2119">must</em> have a glossary section. The glossary <em class="rfc2119">must</em> contain the <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①②">outcome</a> definition, as well as any definitions used in <a href="#applicability">applicability</a> and <a href="#expectations">expectations</a> sections in the rule. Since changes to the definition change the rule, those definitions cannot be maintained independently of the rule. If a shared glossary is used for rules, any definition changes <em class="rfc2119">must</em> result in a new <a href="#rule-versions">rule version</a> of all rules that use that definition.</p>
+   <h3 class="heading settled" data-level="4.12" id="issues-list"><span class="secno">4.12. </span><span class="content">Issues List (optional)</span><a class="self-link" href="#issues-list"></a></h3>
+   <p>An ACT Rule <em class="rfc2119">may</em> include a list or a reference to a list of any known issues. The issues list would be used to record cases where an <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①③">outcome</a> of an ACT Rule was <code>failed</code> where it ought to have been <code>passed</code> or <code>inapplicable</code>, or vice versa. There are several reasons why this might occur. See <a href="#rule-accuracy">rule accuracy</a> for more information.</p>
    <p>The issues list serves two purposes. For users of ACT Rules, the issues list gives insight into why an inaccurate result occurred, as well as provide confidence in the result of that rule. For the designer of the rule, the issues list is also useful to plan future updates to the rule. In a new version of the rule, resolved issues would be moved to the change log.</p>
-   <h3 class="heading settled" data-level="4.14" id="background"><span class="secno">4.14. </span><span class="content">Background (optional)</span><a class="self-link" href="#background"></a></h3>
-   <p>An ACT Rule <em class="rfc2119">may</em> contain information about the background for the development of the rule, or references to relevant reading. The background information is optional, but whenever it is included in the rule, the relationship to the relevant reading can be specified. Examples of relevant background references for a rule for a <a href="https://www.w3.org/WAI/standards-guidelines/wcag/">Web Content Accessibility Guidelines</a> <a data-link-type="biblio" href="#biblio-wcag" title="Web Content Accessibility Guidelines 1.0">[WCAG]</a> success criterion could be <a href="https://www.w3.org/WAI/WCAG21/Understanding/">WCAG 2.1 Understanding documents</a>, <a href="https://www.w3.org/WAI/WCAG21/Techniques/">WCAG 2.1 Techniques</a>, or <a href="https://www.w3.org/TR/wai-aria/">WAI-ARIA 1.1</a>, CSS <a data-link-type="biblio" href="#biblio-css-2018" title="CSS Snapshot 2018">[css-2018]</a>, or HTML <a data-link-type="biblio" href="#biblio-html" title="HTML Standard">[HTML]</a> specifications.</p>
-   <h3 class="heading settled" data-level="4.15" id="implementations"><span class="secno">4.15. </span><span class="content">Implementations (optional)</span><a class="self-link" href="#implementations"></a></h3>
-   <p>An ACT Rule <em class="rfc2119">may</em> contain a list of <a data-link-type="dfn" href="#implementation" id="ref-for-implementation">implementations</a>, where each <a data-link-type="dfn" href="#implementation" id="ref-for-implementation①">implementation</a> has one or more <a data-link-type="dfn" href="#check" id="ref-for-check">checks</a> that are consistent or partially consistent with that rule. An implementation is an accessibility test methodology or test tool that uses <a data-link-type="dfn" href="#check" id="ref-for-check①">checks</a> to compute <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①⑤">outcomes</a> indicating whether an <a data-link-type="dfn" href="#accessibility-requirement" id="ref-for-accessibility-requirement⑧">accessibility requirement</a> could be satisfied. These checks can be fully automated, completely manual, or some combination of the two.</p>
+   <h3 class="heading settled" data-level="4.13" id="implementations"><span class="secno">4.13. </span><span class="content">Implementations (optional)</span><a class="self-link" href="#implementations"></a></h3>
+   <p>An ACT Rule <em class="rfc2119">may</em> contain a list of <a data-link-type="dfn" href="#implementation" id="ref-for-implementation">implementations</a>, where each <a data-link-type="dfn" href="#implementation" id="ref-for-implementation①">implementation</a> has one or more <a data-link-type="dfn" href="#check" id="ref-for-check">checks</a> that are consistent or partially consistent with that rule. An implementation is an accessibility test methodology or test tool that uses <a data-link-type="dfn" href="#check" id="ref-for-check①">checks</a> to compute <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①④">outcomes</a> indicating whether an <a data-link-type="dfn" href="#accessibility-requirement" id="ref-for-accessibility-requirement⑧">accessibility requirement</a> could be satisfied. These checks can be fully automated, completely manual, or some combination of the two.</p>
    <p><a data-link-type="dfn" href="#check" id="ref-for-check②">Checks</a> are not required to have a one-to-one mapping to an ACT Rule. A single check can be consistent with multiple ACT Rules or a <a href="#impl-partial-consistency">set of checks</a> can together be consistent with a single ACT Rule.</p>
    <p>For each implementation, information such as the following could be included:</p>
    <ul>
@@ -1254,7 +1277,7 @@ <h3 class="heading settled" data-level="4.15" id="implementations"><span class="
     <li data-md>
      <p>Name of the vendor</p>
    </ul>
-   <h4 class="heading settled" data-level="4.15.1" id="impl-consistency"><span class="secno">4.15.1. </span><span class="content">Consistency</span><a class="self-link" href="#impl-consistency"></a></h4>
+   <h4 class="heading settled" data-level="4.13.1" id="impl-consistency"><span class="secno">4.13.1. </span><span class="content">Consistency</span><a class="self-link" href="#impl-consistency"></a></h4>
    <p>Consistency describes how well a <a data-link-type="dfn" href="#check" id="ref-for-check③">check</a> is aligned with the intent of an ACT Rule. If consistency is included in an ACT Rule it <em class="rfc2119">must</em> be determined as defined in this section. A consistent check of an ACT Rule is one that can be used to identify some or all non-conformance issues as described by the rule. A check is <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="consistent">consistent</dfn> when all the following are true:</p>
    <ol>
     <li data-md>
@@ -1295,11 +1318,11 @@ <h4 class="heading settled" data-level="4.15.1" id="impl-consistency"><span clas
     <li data-md>
      <p><code>cantTell</code></p>
    </ol>
-   <h4 class="heading settled" data-level="4.15.2" id="impl-partial-consistency"><span class="secno">4.15.2. </span><span class="content">Partial Consistency</span><a class="self-link" href="#impl-partial-consistency"></a></h4>
+   <h4 class="heading settled" data-level="4.13.2" id="impl-partial-consistency"><span class="secno">4.13.2. </span><span class="content">Partial Consistency</span><a class="self-link" href="#impl-partial-consistency"></a></h4>
    <p>A <a data-link-type="dfn" href="#check" id="ref-for-check⑦">check</a> that is not <a data-link-type="dfn" href="#consistent" id="ref-for-consistent">consistent</a> is considered <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="partially-consistent">partially consistent</dfn> if the <a data-link-type="dfn" href="#true-positives" id="ref-for-true-positives">true positive</a> condition is true and not all outcomes it reports for the rule’s test cases are <code>cantTell</code> or <code>untested</code>.</p>
-   <h4 class="heading settled" data-level="4.15.3" id="impl-multi-check"><span class="secno">4.15.3. </span><span class="content">Consistency with multiple checks</span><a class="self-link" href="#impl-multi-check"></a></h4>
+   <h4 class="heading settled" data-level="4.13.3" id="impl-multi-check"><span class="secno">4.13.3. </span><span class="content">Consistency with multiple checks</span><a class="self-link" href="#impl-multi-check"></a></h4>
    <p>An <a data-link-type="dfn" href="#implementation" id="ref-for-implementation②">implementation</a> can include <a data-link-type="dfn" href="#check" id="ref-for-check⑧">checks</a> that test only parts of a single ACT Rule. The combination of those checks can be consistent if all parts of the ACT Rule are covered. The consistency of a <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="set-of-checks">set of checks</dfn> can be determined by treating all <a data-link-type="dfn" href="#partially-consistent" id="ref-for-partially-consistent">partially consistent</a> checks as though they were a single check.</p>
-   <p>A <a data-link-type="dfn" href="#set-of-checks" id="ref-for-set-of-checks">set of checks</a> is <a data-link-type="dfn" href="#consistent" id="ref-for-consistent①">consistent</a> with an ACT Rule if it meets all requirements for a <a data-link-type="dfn" href="#consistent" id="ref-for-consistent②">consistent check</a>. The <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①⑥">outcomes</a> for this set of checks is a list of all outcomes of checks that are partially consistent with the ACT Rule. The accessibility requirements of this set of checks is a list of all accessibility requirements of checks that are partially consistent with the ACT rule.</p>
+   <p>A <a data-link-type="dfn" href="#set-of-checks" id="ref-for-set-of-checks">set of checks</a> is <a data-link-type="dfn" href="#consistent" id="ref-for-consistent①">consistent</a> with an ACT Rule if it meets all requirements for a <a data-link-type="dfn" href="#consistent" id="ref-for-consistent②">consistent check</a>. The <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①⑤">outcomes</a> for this set of checks is a list of all outcomes of checks that are partially consistent with the ACT Rule. The accessibility requirements of this set of checks is a list of all accessibility requirements of checks that are partially consistent with the ACT rule.</p>
    <aside class="example" id="example-cc021208">
     <a class="self-link" href="#example-cc021208"></a> 
     <header>Example of a consistent set of checks:</header>
@@ -1309,7 +1332,7 @@ <h4 class="heading settled" data-level="4.15.3" id="impl-multi-check"><span clas
      <p>ACME Conformance Tool has a second check for elements with role="button". This works similarly to the previous check, except it passes and fails role="button" elements, and is inapplicable for pages with only native buttons. This check is also partially consistent. The combination of these two checks is consistent though, because all failed test cases of the ACT Rule are failed by one of the checks.</p>
     </blockquote>
    </aside>
-   <h3 class="heading settled" data-level="4.16" id="acknowledgments"><span class="secno">4.16. </span><span class="content">Acknowledgments (optional)</span><a class="self-link" href="#acknowledgments"></a></h3>
+   <h3 class="heading settled" data-level="4.14" id="acknowledgments"><span class="secno">4.14. </span><span class="content">Acknowledgments (optional)</span><a class="self-link" href="#acknowledgments"></a></h3>
    <p>An ACT Rule <em class="rfc2119">may</em> contain acknowledgments. This can include, but is not limited to:</p>
    <ul>
     <li data-md>
@@ -1367,7 +1390,7 @@ <h2 class="heading settled" data-level="7" id="definitions"><span class="secno">
      <p>A document, such as a standard, contract, policy or regulation, that includes <a data-link-type="dfn" href="#accessibility-requirement" id="ref-for-accessibility-requirement①①">accessibility requirements</a>. For example, WCAG 2.1, WAI-ARIA 1.1, HTML 5.2, EPUB Accessibility 1.0, BBC HTML Accessibility Standards v2.0</p>
     <dt><dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="check">Check</dfn>
     <dd>
-     <p>A procedure resulting in one or more <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①⑦">outcomes</a> when used to evaluate the accessibility of a web page or other test subject. The procedure can be a step by step description of how to manually perform a test, a fully automated test, or some combination of manual and automated testing.</p>
+     <p>A procedure resulting in one or more <a data-link-type="dfn" href="#outcome" id="ref-for-outcome①⑥">outcomes</a> when used to evaluate the accessibility of a web page or other test subject. The procedure can be a step by step description of how to manually perform a test, a fully automated test, or some combination of manual and automated testing.</p>
     <dt><dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="implementation">Implementation</dfn>
     <dd>
      <p>An accessibility test methodology or test tool, containing a set of <a data-link-type="dfn" href="#check" id="ref-for-check⑨">checks</a> which can be used to determine (non-)conformance of <a data-link-type="dfn" href="#accessibility-requirement" id="ref-for-accessibility-requirement①②">accessibility requirements</a>.</p>
@@ -1682,22 +1705,22 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#accessibility-requirements-document">Accessibility requirements document</a><span>, in § 7</span>
    <li><a href="#atomic-rules">Atomic rules</a><span>, in § 3</span>
    <li><a href="#check">Check</a><span>, in § 7</span>
-   <li><a href="#completeness">Completeness</a><span>, in § 4.15.1</span>
+   <li><a href="#completeness">Completeness</a><span>, in § 4.13.1</span>
    <li><a href="#composite-rules">Composite rules</a><span>, in § 3</span>
-   <li><a href="#consistent">consistent</a><span>, in § 4.15.1</span>
+   <li><a href="#consistent">consistent</a><span>, in § 4.13.1</span>
    <li><a href="#descriptive-title">Descriptive Title</a><span>, in § 4</span>
    <li><a href="#further-testing-is-needed">further testing is needed</a><span>, in § 4.4.1.1</span>
    <li><a href="#implementation">Implementation</a><span>, in § 7</span>
    <li><a href="#not-satisfied">not satisfied</a><span>, in § 4.4.1.1</span>
    <li><a href="#outcome">Outcome</a><span>, in § 7</span>
-   <li><a href="#partially-consistent">partially consistent</a><span>, in § 4.15.2</span>
-   <li><a href="#rule-mapping">Rule Mapping</a><span>, in § 4.15.1</span>
+   <li><a href="#partially-consistent">partially consistent</a><span>, in § 4.13.2</span>
+   <li><a href="#rule-mapping">Rule Mapping</a><span>, in § 4.13.1</span>
    <li><a href="#satisfied">satisfied</a><span>, in § 4.4.1.1</span>
    <li><a href="#satisfying-tests">satisfying tests</a><span>, in § 4.4.1.1</span>
-   <li><a href="#set-of-checks">set of checks</a><span>, in § 4.15.3</span>
+   <li><a href="#set-of-checks">set of checks</a><span>, in § 4.13.3</span>
    <li><a href="#test-subject">Test Subject</a><span>, in § 7</span>
    <li><a href="#test-target">Test Target</a><span>, in § 7</span>
-   <li><a href="#true-positives">True positives</a><span>, in § 4.15.1</span>
+   <li><a href="#true-positives">True positives</a><span>, in § 4.13.1</span>
   </ul>
   <h2 class="no-num no-ref heading settled" id="references"><span class="content">References</span><a class="self-link" href="#references"></a></h2>
   <h3 class="no-num no-ref heading settled" id="normative"><span class="content">Normative References</span><a class="self-link" href="#normative"></a></h3>
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