Backport June 2025 errata to 2.1

guidelines/index.html

@@ -28,7 +28,7 @@ <h3>Background on WCAG 2</h3>
 				<p>Web Content Accessibility Guidelines (WCAG) 2.1 defines how to make web content more accessible to people with disabilities. Accessibility involves a wide range of disabilities, including visual, auditory, physical, speech, cognitive, language, learning, and neurological disabilities. Although these guidelines cover a wide range of issues, they are not able to address the needs of people with all types, degrees, and combinations of disability. These guidelines also make web content more usable by older individuals with changing abilities due to aging and often improve usability for users in general.</p>
 				<p>WCAG 2.1 is developed through the <a href="https://www.w3.org/WAI/standards-guidelines/w3c-process/">W3C process</a> in cooperation with individuals and organizations around the world, with a goal of providing a shared standard for web content accessibility that meets the needs of individuals, organizations, and governments internationally. WCAG 2.1 builds on WCAG 2.0 [[WCAG20]], which in turn built on WCAG 1.0 [[WAI-WEBCONTENT]] and is designed to apply broadly to different web technologies now and in the future, and to be testable with a combination of automated testing and human evaluation. For an introduction to WCAG, see the <a href="https://www.w3.org/WAI/standards-guidelines/wcag/">Web Content Accessibility Guidelines (WCAG) Overview</a>.</p>
 
-				<p>Significant challenges were encountered in defining additional criteria to address cognitive, language, and learning disabilities, including a short timeline for development as well as challenges in reaching consensus on testability, implementability, and international considerations of proposals. Work will carry on in this area in future versions of WCAG. We encourage authors to refer to our supplemental guidance on <a href="https://www.w3.org/WAI/standards-guidelines/wcag/#supplement">improving inclusion for people with disabilities, including learning and cognitive disabilities, people with low-vision, and more</a>.</p>
+				<p>Significant challenges were encountered in defining additional criteria to address cognitive, language, and learning disabilities, including a short timeline for development as well as challenges in reaching consensus on testability, implementability, and international considerations of proposals. Work will carry on in this area in future versions of WCAG. We encourage authors to refer to our <a href="https://www.w3.org/WAI/WCAG2/supplemental/about/">supplemental guidance on improving inclusion</a> for people with disabilities, including cognitive and learning disabilities, low vision, and more.</p>
 
 				<p>Web accessibility depends not only on accessible content but also on accessible web browsers and other user agents. Authoring tools also have an important role in web accessibility. For an overview of how these components of web development and interaction work together, see:</p>
 				<ul>
@@ -704,10 +704,10 @@ <h1>Glossary</h1>
                 <dt data-include="terms/20/user-agent.html" data-include-replace="true"></dt>
 
                 <dt data-include="terms/20/user-controllable.html" data-include-replace="true"></dt>
-
-                <dt data-include="terms/20/user-interface-component.html" data-include-replace="true"></dt>
 
             	<dt data-include="terms/21/user-inactivity.html" data-include-replace="true"></dt>
+
+                <dt data-include="terms/20/user-interface-component.html" data-include-replace="true"></dt>
 
                 <dt data-include="terms/20/video.html" data-include-replace="true"></dt>
 

guidelines/terms/21/motion-animation.html

@@ -1,7 +1,5 @@
 <dt><dfn id="dfn-motion-animation">motion animation</dfn></dt>
 <dd>
-
    <p>addition of steps between conditions to create the illusion of movement or to give a sense of a smooth transition</p>
-	<aside class="example"><p>For example, an element which moves into place or changes size while appearing is considered to be animated. An element which appears instantly without transitioning is not using animation. Motion animation does not include changes of color, blurring, or opacity which do not change the perceived size, shape, or position of the element.</p></aside>
-
+	<aside class="example"><p>For example, an element which moves into place or changes size while appearing is considered to be animated. An element which appears or changes instantly, without transition/animation steps, is not using animation.</p><p>Motion animation does not include changes – such as changes of color or opacity – that do not alter the perceived size, shape, position, or distance/depth of the element to the viewer.</p></aside>
 </dd>

guidelines/terms/21/single-pointer.html

@@ -1,6 +1,6 @@
 <dt><dfn id="dfn-single-pointer">single pointer</dfn></dt>
 <dd>
-   <p>an input modality that only targets a single point on the page/screen at a time – such as a mouse, single finger on a touch screen, or stylus.</p>
+   <p>an input modality that only targets a single point on the page/screen at a time – such as a mouse, single finger on a touch screen, or stylus</p>
    <p class="note">Single pointer interactions include clicks, double clicks, taps, dragging motions, and single-finger swipe gestures. In contrast, multipoint interactions involve the use of two or more pointers at the same time, such as two-finger interactions on a touchscreen, or the simultaneous use of a mouse and stylus.</p>
 </dd>