Add to the note about unused tokens.

--HG--
extra : rebase_source : 38ed3af3cc66c27caceba992e6859b65b7800b64

Author: tabatkins

css3-syntax/Overview.html

@@ -2081,7 +2081,8 @@ <h3 id=tree-construction><span class=secno>3.6. </span> Tree Construction</h3>
     cdo, cdc, colon, semicolon, at-keyword, ], ), and }.
     <p class=note> This means that the following tokens emitted by the
      tokenizer stage will <strong>not</strong> appear in the stylesheet
-     object: function, bad-string, bad-url, [, (, {.
+     object: function, bad-string, bad-url, [, (, {. <span class=issue>I need
+     to make sure this is true.</span>
 
    <dt>function
 

css3-syntax/Overview.src.html

@@ -2105,6 +2105,7 @@ <h3>
 				[,
 				(,
 				{.
+				<span class='issue'>I need to make sure this is true.</span>
 
 		<dt>function
 		<dd>