Make the 'consume a block' algorithm make more sense, with the paren/brace/bracket rename.

--HG--
extra : rebase_source : 6db02c65617dfb4e202bb8ce758ea8b23e2c2e3a

Author: tabatkins

css3-syntax/Overview.html

@@ -2520,13 +2520,14 @@ <h4 id=consume-a-block><span class=secno>3.5.13. </span> <dfn
    block</i></a>. It must be called with an <span class=temp>{</span>, <span
    class=temp>[</span>, or <span class=temp>(</span> token.
 
-  <p> The <dfn id=ending-token>ending token</dfn> is the close-* variant of
-   the token this algorithm was called with.
+  <p> The <dfn id=ending-token>ending token</dfn> is the mirror variant of
+   the token this algorithm was called with. (E.g. if it was called with [,
+   the <a href="#ending-token"><i>ending token</i></a> is ].)
 
   <p> The <dfn id=error-flag>error flag</dfn> is initially false.
 
   <p> Create a brace block, bracket block, or paren block as the <dfn
-   id=current-block>current block</dfn> whichever corresponds to the token
+   id=current-block>current block</dfn>, whichever corresponds to the token
    this algorithm was called with.
 
   <p> Repeatedly consume the <a href="#next-input-token"><i>next input

css3-syntax/Overview.src.html

@@ -2492,13 +2492,14 @@ <h4>
 		token.
 
 	<p>
-		The <dfn>ending token</dfn> is the close-* variant of the token this algorithm was called with.
+		The <dfn>ending token</dfn> is the mirror variant of the token this algorithm was called with.  
+		(E.g. if it was called with [, the <i>ending token</i> is ].)
 
 	<p>
 		The <dfn>error flag</dfn> is initially false.
 
 	<p>
-		Create a brace block, bracket block, or paren block as the <dfn>current block</dfn>
+		Create a brace block, bracket block, or paren block as the <dfn>current block</dfn>,
 		whichever corresponds to the token this algorithm was called with.
 
 	<p>