[css-multicol-4] Defer breaking and fragmentation to [[CSS3-BREAK]]

Author: frivoal

css-multicol-4/Overview.bs

@@ -112,12 +112,20 @@ Column gaps and rules</h2>
 <h2 id="column-breaks">
 Column breaks</h2>
 
-	Issue: Add final content from previous level, or replace with a reference to [[css3-break]], or remove entirely
+	The previous level of this specification defined how
+	the user agent must determine where column breaks are placed
+	when content is laid out in multiple columns.
+	The [[!CSS3-BREAK]] module has since been introduced
+	to define how to break the content across pages,
+	columns, or <a spec=css-regions>CSS Regions</a>,
+	and supersedes <a href="http://dev.w3.org/csswg/css-multicol/#column-breaks">the column break</a> section of [[CSS3-MULTICOL]].
+
+	This specification defers to [[!CSS3-BREAK]] on this topic.
 
 <h3 id="break-before-break-after-break-inside">
 'break-before', 'break-after', 'break-inside'</h3>
 
-	Issue: Add final content from previous level, or replace with a reference to [[css3-break]], or remove entirely
+	The 'break-before', 'break-after' and 'break-inside' properties are now defined in [[!CSS3-BREAK]].
 
 <h2 id="spanning-columns">
 Spanning columns</h2>