Add an issue about a link from nested rule to parent.

Author: tabatkins

css3-hierarchies/Overview.html

@@ -423,6 +423,12 @@ <h2 id=cssom><span class=secno>4. </span> CSS Object Model Modifications</h2>
    must return a <code>DOMString</code> object containing the same text as
    the <code>selectorText</code> attribute.
 
+  <p class=issue>The OM here is meant to reflect the OM for &lsquo;<code
+   class=css>@media</code>&rsquo; rules. In particular, the lack of a link
+   from a rule to its parent matches rules nested in &lsquo;<code
+   class=css>@media</code>&rsquo;. Should we add such a property to both of
+   these?
+
   <h2 id=conformance><span class=secno>5. </span> Conformance</h2>
 
   <h3 id=conventions><span class=secno>5.1. </span> Document Conventions</h3>

css3-hierarchies/Overview.src.html

@@ -287,6 +287,8 @@ <h2 id="cssom">
 
 	<p>The <code>expandedSelectorText</code> attribute must return a <code>DOMString</code> object containing the result of replacing the ''&amp;'' selector in the <code>selectorText</code> attribute with the <code>expandedSelectorText</code> attribute from the parent rule.  If the rule has no parent rule, the <code>expandedSelectorText</code> attribute must return a <code>DOMString</code> object containing the same text as the <code>selectorText</code> attribute.</p>
 
+	<p class='issue'>The OM here is meant to reflect the OM for ''@media'' rules.  In particular, the lack of a link from a rule to its parent matches rules nested in ''@media''.  Should we add such a property to both of these?</p>
+
 <h2 id="conformance">
 Conformance</h2>