[css-cascade] Rename default to revert per WG resolution.

Author: fantasai

css-cascade/Overview.bs

@@ -16,7 +16,7 @@ Previous Version: http://www.w3.org/TR/2005/WD-css3-cascade-20051215/
 Issue Tracking: Disposition of Comments http://dev.w3.org/csswg/css-cascade/issues
 Abstract: This CSS module describes how to collate style rules and assign values to all properties on all elements. By way of cascading and inheritance, values are propagated for all properties on all elements.
 Abstract:
-Abstract: New in this level are the ''default'' keyword and <<supports-condition>> for the ''@import'' rule.
+Abstract: New in this level are the ''revert'' keyword and <<supports-condition>> for the ''@import'' rule.
 Ignored Terms: auto, flex items, <supports-condition>
 Link Defaults: css21 (property) display
 </pre>
@@ -878,9 +878,9 @@ Erasing All Declarations: the ''unset'' keyword</h4>
 	(or all longhands of a <a>shorthand</a>).
 
 <h4 id="default">
-Rolling Back The Cascade: the ''default'' keyword</h4>
+Rolling Back The Cascade: the ''revert'' keyword</h4>
 
-	If the <a>cascaded value</a> of a property is the <dfn for=all>''default''</dfn> keyword,
+	If the <a>cascaded value</a> of a property is the <dfn for=all>''revert''</dfn> keyword,
 	the behavior depends on the origin to which the declaration belongs:
 
 	<dl>
@@ -897,19 +897,25 @@ Rolling Back The Cascade: the ''default'' keyword</h4>
 		<dd>
 			Rolls back the cascade to the user level,
 			so that the <a>specified value</a> is calculated as if no author-level rules were specified for this property.
-			For the purpose of ''default'', this origin includes the Override and Animation <a>origins</a>.
+			For the purpose of ''revert'', this origin includes the Override and Animation <a>origins</a>.
 	</dl>
 
 <h2 id="changes">
 Changes</h2>
 
+	Changes since the <a href="http://www.w3.org/TR/2015/WD-css-cascade-4-20150421/">21 April 2015 Working Draft</a> include:
+
+	<ul>
+		<li>Renamed <css>default</css> keyword to ''revert''.
+	</ul>
+
 <h3 id="additions-l3">
 Additions Since Level 3</h3>
 
 	The following additions were made to this specification since the
 	<a href="http://www.w3.org/TR/css-cascade-3/">Level 3 CR</a>:
 
-	* Introduced ''default'' keyword, for rolling back the cascade.
+	* Introduced ''revert'' keyword, for rolling back the cascade.
 	* Introduced ''supports()'' syntax for supports-conditional ''@import'' rules.
 
 <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>