Whoops, left out the type of the expandedSelectorText attribute.

Author: tabatkins

css3-hierarchies/Overview.html

@@ -410,7 +410,7 @@ <h2 id=cssom><span class=secno>4. </span> CSS Object Model Modifications</h2>
   <pre class=idl>
 interface CSSStyleRule : CSSRule {
            attribute DOMString selectorText;
-  <ins>readonly attribute expandedSelectorText;</ins>
+  <ins>readonly attribute DOMString expandedSelectorText;</ins>
   <ins>readonly attribute CSSRuleList cssRules;</ins>
   readonly attribute CSSStyleDeclaration style;
 };</pre>

css3-hierarchies/Overview.src.html

@@ -280,7 +280,7 @@ <h2 id="cssom">
 	<pre class='idl'>
 interface CSSStyleRule : CSSRule {
            attribute DOMString selectorText;
-  <ins>readonly attribute expandedSelectorText;</ins>
+  <ins>readonly attribute DOMString expandedSelectorText;</ins>
   <ins>readonly attribute CSSRuleList cssRules;</ins>
   readonly attribute CSSStyleDeclaration style;
 };</pre>