[css3-conditional] Clarify meaning of logical simplification.

Addresses http://lists.w3.org/Archives/Public/www-style/2013Feb/0237.html
which is a followup to Issue 8 in the LC disposition of comments.

Author: dbaron

css3-conditional/Overview.html

@@ -12,11 +12,11 @@
    rel=dcterms.rights>
   <meta content="CSS Conditional Rules Module Level 3" name=dcterms.title>
   <meta content=text name=dcterms.type>
-  <meta content=2013-02-07 name=dcterms.issued>
+  <meta content=2013-02-08 name=dcterms.issued>
   <meta content="http://dev.w3.org/csswg/css3-conditional/"
    name=dcterms.creator>
   <meta content=W3C name=dcterms.publisher>
-  <meta content="http://www.w3.org/TR/2013/ED-css3-conditional-20130207/"
+  <meta content="http://www.w3.org/TR/2013/ED-css3-conditional-20130208/"
    name=dcterms.identifier>
   <link href="../default.css" rel=stylesheet type="text/css">
   <link href="../csslogo.ico" rel="shortcut icon" type="image/x-icon">
@@ -33,14 +33,14 @@
 
    <h1>CSS Conditional Rules Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 7 February
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 8 February
     2013</h2>
 
    <dl>
     <dt>This version:
 
-    <dd><a href="http://www.w3.org/TR/2013/ED-css3-conditional-20130207/">
-     http://www.w3.org/TR/2013/ED-css3-conditional-20130207/</a>
+    <dd><a href="http://www.w3.org/TR/2013/ED-css3-conditional-20130208/">
+     http://www.w3.org/TR/2013/ED-css3-conditional-20130208/</a>
 
     <dt>Latest version:
 
@@ -1248,7 +1248,8 @@ <h3 id=the-csssupportsrule-interface><span class=secno>7.5. </span> The <a
     mechanism in this specification). In other words, token stream
     simplifications are allowed (such as reducing whitespace to a single
     space or omitting it in cases where it is known to be optional), but
-    logical simplifications are not allowed.
+    logical simplifications (such as removal of unneeded parentheses, or
+    simplification based on evaluating results) are not allowed.
   </dl>
   <!--
 <h3 id="the-cssdocumentrule-interface">

css3-conditional/Overview.src.html

@@ -1004,7 +1004,8 @@ <h3 id="the-csssupportsrule-interface">
     token stream simplifications are allowed
     (such as reducing whitespace to a single space
     or omitting it in cases where it is known to be optional),
-    but logical simplifications are not allowed.
+    but logical simplifications (such as removal of unneeded parentheses,
+    or simplification based on evaluating results) are not allowed.
 
 </dl>