revising page and column pseudo-elements

Author: howcome

css-gcpm/Overview.src.html

@@ -3518,7 +3518,9 @@ <h2>Page and column floats, alternative syntax</h2>
 -->
 
 
-<h2>Selecting pages</h2>
+<h2>Selecting columns and pages</h2>
+
+<h3>Selecting named pages</h3>
 
 <p>In CSS2, <a href="http://www.w3.org/TR/CSS2/page.html#page-selectors">first, left and right pages</a> can be selected. This specification adds support for selecting the nth page. 
 
@@ -3545,10 +3547,11 @@ <h2>Selecting pages</h2>
 <p>The grammar of allowed arguments to nth() is the same as the <a href="http://www.w3.org/TR/css3-selectors/#nth-child-pseudo">nth-child() pseudo-class</a>.
 
 <div class=example>
-<p>In this example, pages in a document will alternate between pink and lime backgrounds:
+<p>In this example, pages in a document will cycle through pink, lime and white backgrounds:
 <pre>
-@page :nth(odd) { background: pink }
-@page :nth(even)) { background: lime }
+@page :nth(3n) { background: pink }
+@page :nth(3n+1)) { background: lime }
+@page :nth(3n+2)) { background: white }
 </pre>
 </div>
 
@@ -3613,6 +3616,23 @@ <h3>Page groups</h2>
 
 </div>
 
+<h3>'page' and 'column' pseudo-elements</h3>
+
+<div class=example>
+<pre>
+article::page(left) p {   /* select all p elements that appear on left pages in an article */
+  ... 
+} 
+</pre>
+</div>
+
+<div class=example>
+<pre>
+article::column(2n) {     /* select every other column of an article */
+  ...
+}
+</pre>
+</div>
 
 <h2>Selecting lines</h2>