Replicating the 2.2 errata (#3742)

guidelines/terms/21/pointer-input.html

@@ -1,10 +1,7 @@
 <dt><dfn id="dfn-pointer-inputs" data-lt="pointer inputs">pointer input</dfn></dt>
 <dd>
 
-   <p>input from a device that can target a specific coordinate (or set of coordinates) on a screen,
-      such as a mouse, pen, or touch contact
-   </p>
-   <p class="note">See the <a href="https://www.w3.org/TR/pointerevents/#dfn-pointer">Pointer Events
-      definition for "pointer"</a> [[pointerevents]].</p>
+   <p>an input 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">In contrast to single pointer inputs, 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>