[css-break] Linkify page progression

Author: fantasai

css-break/Overview.bs

@@ -344,13 +344,13 @@ Page Break Values</h4>
     <dd>
       Force one or two page breaks before/after the <a href="http://www.w3.org/TR/CSS21/visuren.html#block-boxes">principal box</a> so that
       the next page is formatted as either a left page or a right page,
-      whichever is second (according to the page progression) in a page spread.
+      whichever is second (according to the <i>page progression</i>) in a page spread.
     </dd>
     <dt><dfn>verso</dfn>
     <dd>
       Force one or two page breaks before/after the <a href="http://www.w3.org/TR/CSS21/visuren.html#block-boxes">principal box</a> so that
       the next page is formatted as either a left page or a right page,
-      whichever is first (according to the page progression) in a page spread.
+      whichever is first (according to the <i>page progression</i>) in a page spread.
     </dd>
   </dl>
 

css-break/Overview.html

@@ -724,7 +724,7 @@ <h4 class="no-num heading settled" id="page-break-values"><span class="content">
     <dd>
       Force one or two page breaks before/after the <a href="http://www.w3.org/TR/CSS21/visuren.html#block-boxes">principal box</a> so that
       the next page is formatted as either a left page or a right page,
-      whichever is second (according to the page progression) in a page spread.
+      whichever is second (according to the <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-page-3/#page-progression">page progression</a>) in a page spread.
 
 
 
@@ -733,7 +733,7 @@ <h4 class="no-num heading settled" id="page-break-values"><span class="content">
     <dd>
       Force one or two page breaks before/after the <a href="http://www.w3.org/TR/CSS21/visuren.html#block-boxes">principal box</a> so that
       the next page is formatted as either a left page or a right page,
-      whichever is first (according to the page progression) in a page spread.
+      whichever is first (according to the <a data-link-type="dfn" href="http://dev.w3.org/csswg/css-page-3/#page-progression">page progression</a>) in a page spread.
 
 
 
@@ -2235,6 +2235,7 @@ <h3 class="no-num heading settled" id="index-defined-elsewhere"><span class="con
    <li><a data-link-type="biblio" href="#biblio-css-page-3">[css-page-3]</a> defines the following terms:
     <ul>
      <li><a href="http://dev.w3.org/csswg/css-page-3/#propdef-page">page</a>
+     <li><a href="http://dev.w3.org/csswg/css-page-3/#page-progression">page progression</a>
     </ul>
    <li><a data-link-type="biblio" href="#biblio-css-position-3">[css-position-3]</a> defines the following terms:
     <ul>