[css-counter-styles] redo intro

--HG--
extra : rebase_source : 713b95c20703ad56d8517d9209e342d30642ba3a

Author: tabatkins

css-counter-styles/Overview.html

@@ -57,11 +57,17 @@ <h1>CSS Counter Styles Level 3</h1>
 
   <h2 class="no-num no-toc" id=abstract> Abstract</h2>
 
-  <p> This module introduces the ‘<code class=css>@counter-style</code>’
-   rule, for defining custom counter styles (algorithms for rendering
-   counters with the ‘<code class=css>counter()</code>’ or ‘<code
-   class=css>counters()</code>’ functions). It also predefines several
-   counter styles that all CSS user agents must <a
+  <p> The <a href="http://www.w3.org/TR/css3-lists/">CSS Lists Module</a>
+   defines the concept of counters, which can be used implicitly in list
+   markers or explicitly with the ‘<code class=css>counter()</code>’ or
+   ‘<code class=css>counters()</code>’ functions. A counter's integer
+   value is turned into a string by providing a <a
+   href="#counter-style0"><i>counter style</i></a>. This module introduces
+   the ‘<code class=css>@counter-style</code>’ rule, which allows authors
+   to define their own custom <i>counter styles</i>. It also redefines all
+   the counter styles present in CSS2 and CSS2.1, plus a small number of
+   other useful counter styles, in terms of ‘<code
+   class=css>@counter-style</code>’ rules in the UA style sheet. <a
    href="http://www.w3.org/TR/CSS/">CSS</a> is a language for describing the
    rendering of structured documents (such as HTML and XML) on screen, on
    paper, in speech, etc.

css-counter-styles/Overview.src.html

@@ -29,11 +29,14 @@ <h2 class="no-num no-toc" id="abstract">
 Abstract</h2>
 
 	<p>
+		The <a href="http://www.w3.org/TR/css3-lists/">CSS Lists Module</a> defines the concept of counters,
+		which can be used implicitly in list markers or explicitly with the ''counter()'' or ''counters()'' functions.
+		A counter's integer value is turned into a string by providing a <i>counter style</i>.
 		This module introduces the ''@counter-style'' rule,
-		for defining custom counter styles
-		(algorithms for rendering counters with the ''counter()'' or ''counters()'' functions).
-		It also predefines several counter styles
-		that all CSS user agents must 
+		which allows authors to define their own custom <i>counter styles</i>.
+		It also redefines all the counter styles present in CSS2 and CSS2.1,
+		plus a small number of other useful counter styles,
+		in terms of ''@counter-style'' rules in the UA style sheet.
 		<a href="http://www.w3.org/TR/CSS/">CSS</a> is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.
 
 <h2 class="no-num no-toc" id="status">