Clarify breaking behavior of scrollable elements. <http://lists.w3.org/Archives/Public/www-style/2012Mar/0465.html>

Author: fantasai

css3-break/Overview.html

@@ -17,11 +17,11 @@
 
    <h1 id=css-fragmentation-module>CSS Fragmentation Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 30 April 2012</h2>
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 3 May 2012</h2>
 
    <dl>
     <dt>This version:</dt>
-    <!-- <dd><a href="http://www.w3.org/TR/2012/ED-css3-break-20120430/">http://www.w3.org/TR/2012/WD-css3-break-20120430/</a></dd> -->
+    <!-- <dd><a href="http://www.w3.org/TR/2012/ED-css3-break-20120503/">http://www.w3.org/TR/2012/WD-css3-break-20120503/</a></dd> -->
 
     <dd><a
      href="http://dev.w3.org/csswg/css3-break/">http://dev.w3.org/csswg/css3-break/</a>
@@ -750,11 +750,13 @@ <h3 id=possible-breaks><span class=secno>4.1. </span> Possible Break Points</h3>
   <p> The UA is not required to fragment the contents of scrollable elements
    e.g. those with &lsquo;<code class=property>overflow</code>&rsquo; set to
    &lsquo;<code class=css>auto</code>&rsquo; or &lsquo;<code
-   class=css>scroll</code>&rsquo;, and may instead either graphically slice
-   their contents as necessary to fragment the element or treat the element
-   as unbreakable and overflow the fragmenter. In such cases it must treat
-   the element as having &lsquo;<code class=css>break-inside:
-   avoid</code>&rsquo;.
+   class=css>scroll</code>&rsquo;, and may instead either slice the element's
+   graphical representation as necessary to fragment it or treat its box as
+   monolithic (unbreakable) and overflow the fragmenter. In both cases it
+   must treat the element as having &lsquo;<code class=css>break-inside:
+   avoid</code>&rsquo;, i.e. only slice or overflow at the fragmenter edge if
+   there are no <a href="#possible-breaks">possible break points</a> on the
+   fragmenter.
 
   <h3 id=break-types><span class=secno>4.2. </span> Types of Breaks</h3>
 

css3-break/Overview.src.html

@@ -525,9 +525,12 @@ <h3 id="possible-breaks">
   <p>
     The UA is not required to fragment the contents of scrollable elements
     e.g. those with 'overflow' set to ''auto'' or ''scroll'', and may instead
-    either graphically slice their contents as necessary to fragment the element
-    or treat the element as unbreakable and overflow the fragmenter. In
-    such cases it must treat the element as having ''break-inside: avoid''.
+    either slice the element's graphical representation as necessary to fragment it
+    or treat its box as monolithic (unbreakable) and overflow the fragmenter.
+    In both cases it must treat the element as having ''break-inside: avoid'',
+    i.e. only slice or overflow at the fragmenter edge
+    if there are no <a href="#possible-breaks">possible break points</a>
+    on the fragmenter.
   </p>
 
 <h3 id="break-types">