[css-anchor-1] Mention position-anchor/area in the intro.

Author: fantasai

css-anchor-position-1/Overview.bs

@@ -60,20 +60,21 @@ This flexibility can be very useful,
 but also very limiting--
 often you want to position relative to <em>some</em> other element.
 <dfn export>Anchor positioning</dfn>
-(via the <dfn export>anchor functions</dfn> ''anchor()'' and ''anchor-size()'')
+(via the 'position-anchor' and 'position-area' properties
+and/or the <dfn export>anchor functions</dfn> ''anchor()'' and ''anchor-size()'')
 allows authors to achieve this,
-"anchoring" an [=absolutely-positioned=] element
+“anchoring” an [=absolutely-positioned=] element
 to one or more other elements on the page,
 while also allowing them to try several possible positions
-to find the "best" one that avoids overlap/overflow.
-
-For example, an author might want to position a tooltip
-centered and above the targeted element,
-unless that would place the tooltip offscreen,
-in which case it should be below the targeted element.
-This can be done with the following CSS:
+to find the “best” one that avoids overlap/overflow.
 
 <div class=example>
+	For example, an author might want to position a tooltip
+	centered and above the targeted element,
+	unless that would place the tooltip offscreen,
+	in which case it should be below the targeted element.
+	This can be done with the following CSS:
+
 	<pre class=lang-css>
 	.anchor {
 		anchor-name: --tooltip;