[css-cascade] Clarify that custom properties are not reset by 'all'. #2518

Author: fantasai

css-cascade-3/Overview.bs

@@ -238,8 +238,10 @@ Resetting All Properties: the 'all' property</h3>
 	The 'all' property is a <a>shorthand</a> that resets <em>all</em> CSS properties
 	except 'direction' and 'unicode-bidi'.
 	It only accepts the <a href="https://www.w3.org/TR/css3-values/#common-keywords">CSS-wide keywords</a>.
+	It does not reset <a>custom properties</a> [[css-variables-1]].
 
-	Note: The excepted properties are actually markup-level features,
+	Note: The excepted CSS properties 'direction' and 'unicode-bidi'
+	are actually markup-level features,
 	and <a href="https://www.w3.org/TR/css3-writing-modes/#text-direction">should not be set in the author's style sheet</a>.
 	(They exist as CSS properties only to style document languages not supported by the UA.)
 	Authors should use the appropriate markup, such as HTML's <code>dir</code> attribute, instead.
@@ -905,6 +907,17 @@ Erasing All Declarations: the ''unset'' keyword</h4>
 <h2 id="changes">
 Changes</h2>
 
+<h3 id="changes-2016">
+Changes Since the 19 May 2016 Candidate Recommendation</h3>
+
+	The following changes were made to this specification since the
+	<a href="https://www.w3.org/TR/2016/CR-css-cascade-3-20160519/">19 May 2016 Candidate Recommendation</a>:
+
+	<ul>
+		<li>Clarified that <a>custom properties</a> are not reset by the 'all' shorthand.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/2518">2518</a>)
+	</ul>
+
 <h3 id="changes-2013">
 Changes Since the 3 October 2013 Candidate Recommendation</h3>
 

css-cascade-4/Overview.bs

@@ -370,11 +370,14 @@ Resetting All Properties: the 'all' property</h3>
 			<td>See individual properties
 	</table>
 
-	The 'all' property is a <a>shorthand</a> that resets <em>all</em> CSS properties
+	The 'all' property is a <a>shorthand</a>
+	that resets <em>all</em> CSS properties
 	except 'direction' and 'unicode-bidi'.
 	It only accepts the <a href="https://www.w3.org/TR/css3-values/#common-keywords">CSS-wide keywords</a>.
+	It does not reset <a>custom properties</a> [[css-variables-1]].
 
-	Note: The excepted properties are actually markup-level features,
+	Note: The excepted CSS properties 'direction' and 'unicode-bidi'
+	are actually markup-level features,
 	and <a href="https://www.w3.org/TR/css3-writing-modes/#text-direction">should not be set in the author's style sheet</a>.
 	(They exist as CSS properties only to style document languages not supported by the UA.)
 	Authors should use the appropriate markup, such as HTML's <code>dir</code> attribute, instead.
@@ -1022,7 +1025,9 @@ Changes</h2>
 	Changes since the <a href="https://www.w3.org/TR/2016/CR-css-cascade-4-20160114/">14 January 2016 Working Draft</a> include:
 
 	<ul>
-		<li>Clarify that ''revert'' only affects the cascaded value, not the inherited value.
+		<li>Clarified that ''revert'' only affects the cascaded value, not the inherited value.
+		<li>Clarified that <a>custom properties</a> are not reset by the 'all' shorthand.
+		(<a href="https://github.com/w3c/csswg-drafts/issues/2518">2518</a>)
 	</ul>
 
 	Changes since the <a href="https://www.w3.org/TR/2015/WD-css-cascade-4-20150421/">21 April 2015 Working Draft</a> include: